Package man-pages

• CPU_SET(3)
• INFINITY(3) — floating-point constants
• MAX(3) — maximum or minimum of two values
• MB_CUR_MAX(3) — maximum length of a multibyte character in the current locale
• MB_LEN_MAX(3) — maximum multibyte length of a character across all locales
• __ppc_get_timebase(3) — get the current value
• __ppc_set_ppr_med(3)
• __ppc_yield(3)
• __setfpucw(3) — set FPU control word on i386 architecture (obsolete)
• _exit(2) — terminate the calling process
• _syscall(2) — invoking a system call without library support (OBSOLETE)
• a64l(3) — convert between long and base-64
• abort(3) — cause abnormal process termination
• abs(3) — compute the absolute value of an integer
• accept(2) — accept a connection on a socket
• access(2) — check user's permissions for a file
• acct(2) — switch process accounting on or off
• acct(5) — process accounting file
• acos(3) — arc cosine function
• acosh(3) — inverse hyperbolic cosine function
• add_key(2) — add a key to the kernel's key management facility
• address_families(7) — socket address families (domains)
• addseverity(3) — introduce new severity classes
• adjtime(3) — correct the time to synchronize the system clock
• adjtimex(2) — tune kernel clock
• aio(7) — POSIX asynchronous I/O overview
• aio_cancel(3) — cancel an outstanding asynchronous I/O request
• aio_error(3) — get error status of asynchronous I/O operation
• aio_fsync(3) — asynchronous file synchronization
• aio_init(3) — asynchronous I/O initialization
• aio_read(3) — asynchronous read
• aio_return(3) — get return status of asynchronous I/O operation
• aio_suspend(3) — wait for asynchronous I/O operation or timeout
• aio_write(3) — asynchronous write
• alarm(2) — set an alarm clock for delivery of a signal
• alloc_hugepages(2) — allocate or free huge pages
• alloca(3) — allocate memory that is automatically freed
• arch_prctl(2) — set architecture-specific thread state
• argz_add(3) — functions to handle an argz list
• armscii-8(7) — Armenian character set encoded in octal, decimal,
• arp(7) — Linux ARP kernel module.
• ascii(7) — ASCII character set encoded in octal, decimal,
• asin(3) — arc sine function
• asinh(3) — inverse hyperbolic sine function
• asprintf(3) — print to allocated string
• assert(3) — abort the program if assertion is false
• assert_perror(3) — test errnum and abort
• atan(3) — arc tangent function
• atan2(3) — arc tangent function of two variables
• atanh(3) — inverse hyperbolic tangent function
• atexit(3) — register a function to be called at normal process termination
• atof(3) — convert a string to a double
• atoi(3) — convert a string to an integer
• attributes(7) — POSIX safety concepts
• backtrace(3) — support
• basename(3) — parse pathname components
• bcmp(3) — compare byte sequences
• bcopy(3) — copy byte sequence
• bdflush(2) — start, flush, or tune buffer-dirty-flush daemon
• bind(2) — bind a name to a socket
• bindresvport(3) — bind a socket to a privileged IP port
• boot(7) — System bootup process based on UNIX System V Release 4
• bootparam(7) — introduction to boot time parameters of the Linux kernel
• bpf(2) — perform a command on an extended BPF map or program
• bpf-helpers(7) — list of eBPF helper functions
• brk(2) — change data segment size
• bsd_signal(3) — signal handling with BSD semantics
• bsearch(3) — binary search of a sorted array
• bstring(3) — byte string operations
• bswap(3) — reverse order of bytes
• btowc(3) — convert single byte to wide character
• btree(3) — btree database access method
• byteorder(3) — convert values between host and network
• bzero(3) — zero a byte string
• cabs(3) — absolute value of a complex number
• cacheflush(2) — flush contents of instruction and/or data cache
• cacos(3) — complex arc cosine
• cacosh(3) — complex arc hyperbolic cosine
• canonicalize_file_name(3) — return the canonicalized absolute pathname
• capabilities(7) — overview of Linux capabilities
• capget(2) — set/get capabilities of thread(s)
• carg(3) — calculate the complex argument
• casin(3) — complex arc sine
• casinh(3) — complex arc sine hyperbolic
• catan(3) — complex arc tangents
• catanh(3) — complex arc tangents hyperbolic
• catchsegv(1) — Catch segmentation faults in programs
• catgets(3) — get message from a message catalog
• catopen(3) — open/close a message catalog
• cbrt(3) — cube root function
• cciss(4) — HP Smart Array block driver
• ccos(3) — complex cosine function
• ccosh(3) — complex hyperbolic cosine
• ceil(3) — ceiling function: smallest integral value not
• cexp(3) — complex exponential function
• cexp2(3) — base-2 exponent of a complex number
• cfree(3) — free allocated memory
• cgroup_namespaces(7) — overview of Linux cgroup namespaces
• cgroups(7) — Linux control groups
• charmap(5) — character set description file
• charsets(7) — character set standards and internationalization
• chdir(2) — change working directory
• chmod(2) — change permissions of a file
• chown(2) — change ownership of a file
• chroot(2) — change root directory
• cimag(3) — get imaginary part of a complex number
• circleq(3) — implementation of a doubly linked circular queue
• clearenv(3) — clear the environment
• clock(3) — determine processor time
• clock_getcpuclockid(3) — obtain ID of a process CPU-time clock
• clock_getres(2) — clock and time functions
• clock_nanosleep(2) — high-resolution sleep with specifiable clock
• clog(3) — natural logarithm of a complex number
• clog10(3) — base-10 logarithm of a complex number
• clog2(3) — base-2 logarithm of a complex number
• clone(2) — create a child process
• close(2) — close a file descriptor
• close_range(2) — close all file descriptors in a given range
• closedir(3) — close a directory
• cmsg(3) — access ancillary data
• complex(7) — basics of complex mathematics
• confstr(3) — get configuration dependent string variables
• conj(3) — calculate the complex conjugate
• connect(2) — initiate a connection on a socket
• console_codes(4) — Linux console escape and control sequences
• copy_file_range(2) — Copy a range of data from one file to another
• copysign(3) — copy sign of a number
• core(5) — core dump file
• cos(3) — cosine function
• cosh(3) — hyperbolic cosine function
• cp1251(7) — CP\ 1251 character set encoded in octal, decimal,
• cp1252(7) — CP\ 1252 character set encoded in octal, decimal,
• cpow(3) — complex power function
• cproj(3) — project into Riemann Sphere
• cpuid(4) — x86 CPUID access device
• cpuset(7) — confine processes to processor and memory node subsets
• creal(3) — get real part of a complex number
• create_module(2) — create a loadable module entry
• credentials(7) — process identifiers
• csin(3) — complex sine function
• csinh(3) — complex hyperbolic sine
• csqrt(3) — complex square root
• ctan(3) — complex tangent function
• ctanh(3) — complex hyperbolic tangent
• ctermid(3) — get controlling terminal name
• ctime(3) — transform date and time to broken-down time or ASCII
• daemon(3) — run in the background
• dbopen(3) — database access methods
• ddp(7) — Linux AppleTalk protocol implementation
• delete_module(2) — unload a kernel module
• des_crypt(3) — fast
• difftime(3) — calculate time difference
• dir_colors(5) — configuration file for dircolors(1)
• dirfd(3) — get directory stream file descriptor
• div(3) — compute quotient and remainder of
• dl_iterate_phdr(3) — walk through list of shared objects
• dladdr(3) — translate address to symbolic information
• dlerror(3) — obtain error diagnostic for functions in the dlopen API
• dlinfo(3) — obtain information about a dynamically loaded object
• dlopen(3)
• dlsym(3) — obtain address of a symbol in a shared object or executable
• drand48(3) — generate uniformly distributed pseudo-random numbers
• drand48_r(3) — generate uniformly distributed pseudo-random numbers reentrantly
• dsp56k(4) — DSP56001 interface device
• dup(2) — duplicate a file descriptor
• duplocale(3) — duplicate a locale object
• dysize(3) — get number of days for a given year
• ecvt(3) — convert a floating-point number to a string
• ecvt_r(3) — convert a floating-point number to a string
• elf(5) — format of Executable and Linking Format (ELF) files
• encrypt(3) — encrypt 64-bit messages
• end(3) — end of program segments
• endian(3)
• environ(7) — user environment
• envz_add(3) — environment string support
• epoll(7) — I/O event notification facility
• epoll_create(2) — open an epoll file descriptor
• epoll_ctl(2) — control interface for an epoll file descriptor
• epoll_wait(2) — wait for an I/O event on an epoll file descriptor
• erf(3) — error function
• erfc(3) — complementary error function
• err(3) — formatted error messages
• errno(3) — number of last error
• error(3) — glibc error reporting functions
• ether_aton(3) — Ethernet address manipulation routines
• euidaccess(3) — check effective user's permissions for a file
• eventfd(2) — create a file descriptor for event notification
• exec(3) — execute a file
• execve(2) — execute program
• execveat(2) — execute program relative to a directory file descriptor
• exit(3) — cause normal process termination
• exit_group(2) — exit all threads in a process
• exp(3) — base-e exponential function
• exp10(3) — base-10 exponential function
• exp2(3) — base-2 exponential function
• expm1(3) — exponential minus 1
• fabs(3) — absolute value of floating-point number
• fallocate(2) — manipulate file space
• fanotify(7) — monitoring filesystem events
• fanotify_init(2) — create and initialize fanotify group
• fanotify_mark(2) — add, remove, or modify an fanotify mark on a filesystem
• fclose(3) — close a stream
• fcloseall(3) — close all open streams
• fcntl(2) — manipulate file descriptor
• fd(4) — floppy disk device
• fdim(3) — positive difference
• feature_test_macros(7) — feature test macros
• fenv(3) — floating-point rounding and exception handling
• ferror(3) — check and reset stream status
• fexecve(3) — execute program specified via file descriptor
• fflush(3) — flush a stream
• ffs(3) — find first bit set in a word
• fgetc(3) — input of characters and strings
• fgetgrent(3) — get group file entry
• fgetpwent(3) — get password file entry
• fgetwc(3) — read a wide character from a FILE stream
• fgetws(3) — read a wide-character string from a FILE stream
• fifo(7) — first-in first-out special file, named pipe
• fileno(3) — obtain file descriptor of a stdio stream
• filesystems(5) — Linux filesystem types: ext, ext2, ext3, ext4, hpfs, iso9660,
• finite(3)
• flock(2) — apply or remove an advisory lock on an open file
• flockfile(3) — lock FILE for stdio
• floor(3) — largest integral value not greater than argument
• fma(3) — floating-point multiply and add
• fmax(3) — determine maximum of two floating-point numbers
• fmemopen(3) — open memory as stream
• fmin(3) — determine minimum of two floating-point numbers
• fmod(3) — floating-point remainder function
• fmtmsg(3) — print formatted error messages
• fnmatch(3) — match filename or pathname
• fopen(3) — stream open functions
• fopencookie(3) — opening a custom stream
• fork(2) — create a child process
• fpathconf(3) — get configuration values for files
• fpclassify(3) — floating-point
• fpurge(3) — purge a stream
• fputwc(3) — write a wide character to a FILE stream
• fputws(3) — write a wide-character string to a FILE stream
• fread(3) — binary stream input/output
• frexp(3) — convert floating-point number to fractional
• fseek(3) — reposition a stream
• fseeko(3) — seek to or report file position
• fsync(2) — synchronize a file's in-core state with storage device
• ftime(3) — return date and time
• ftok(3) — convert a pathname and a project identifier to a System V IPC key
• ftpusers(5) — list of users that may not log in via the FTP daemon
• fts(3) — \
• ftw(3) — file tree walk
• full(4) — always full device
• fuse(4) — Filesystem in Userspace (FUSE) device
• futex(2) — fast user-space locking
• futex(7) — fast user-space locking
• futimes(3) — change file timestamps
• futimesat(2) — change timestamps of a file relative to a \
• fwide(3) — set and determine the orientation of a FILE stream
• gai.conf(5) — getaddrinfo(3) configuration file
• gamma(3) — (logarithm of the) gamma function
• gcvt(3) — convert a floating-point number to a string
• get_kernel_syms(2) — retrieve exported kernel and module symbols
• get_mempolicy(2) — retrieve NUMA memory policy for a thread
• get_nprocs_conf(3) — get number of processors
• get_phys_pages(3) — get total and available physical
• get_robust_list(2) — get/set list of robust futexes
• getaddrinfo(3) — network address and
• getaddrinfo_a(3) — asynchronous
• getauxval(3) — retrieve a value from the auxiliary vector
• getconf(1) — Query system configuration variables
• getcontext(3) — get or set the user context
• getcpu(2) — determine CPU and NUMA node on which the calling thread is running
• getcwd(3) — get current working directory
• getdate(3) — convert a date-plus-time string to broken-down time
• getdents(2) — get directory entries
• getdirentries(3) — get directory entries in a filesystem-independent format
• getdomainname(2) — get/set NIS domain name
• getdtablesize(3) — get file descriptor table size
• getent(1) — get entries from Name Service Switch libraries
• getentropy(3) — fill a buffer with random bytes
• getenv(3) — get an environment variable
• getfsent(3) — handle fstab entries
• getgid(2) — get group identity
• getgrent(3) — get group file entry
• getgrent_r(3) — get group file entry reentrantly
• getgrnam(3) — get group file entry
• getgrouplist(3) — get list of groups to which a user belongs
• getgroups(2) — get/set list of supplementary group IDs
• gethostbyname(3) — get network host entry
• gethostid(3) — get or set the unique identifier of the current host
• gethostname(2) — get/set hostname
• getifaddrs(3) — get interface addresses
• getipnodebyname(3) — get network
• getitimer(2) — get or set value of an interval timer
• getline(3) — delimited string input
• getloadavg(3) — get system load averages
• getlogin(3) — get username
• getmntent(3) — get filesystem descriptor file entry
• getnameinfo(3) — address-to-name translation in protocol-independent manner
• getnetent(3)
• getnetent_r(3) — get
• getopt(3) — Parse command-line options
• getpagesize(2) — get memory page size
• getpass(3) — get a password
• getpeername(2) — get name of connected peer socket
• getpid(2) — get process identification
• getpriority(2) — get/set program scheduling priority
• getprotoent(3) — get protocol entry
• getprotoent_r(3) — get
• getpt(3) — open a new pseudoterminal master
• getpw(3) — reconstruct password line entry
• getpwent(3) — get password file entry
• getpwent_r(3) — get passwd file entry reentrantly
• getpwnam(3) — get password file entry
• getrandom(2) — obtain a series of random bytes
• getresuid(2) — get real, effective, and saved user/group IDs
• getrlimit(2) — get/set resource limits
• getrpcent(3) — get
• getrpcent_r(3) — get
• getrpcport(3) — get RPC port number
• getrusage(2) — get resource usage
• gets(3) — get a string from standard input (DEPRECATED)
• getservent(3)
• getservent_r(3) — get
• getsid(2) — get session ID
• getsockname(2) — get socket name
• getsockopt(2) — get and set options on sockets
• getspnam(3) — get shadow password file entry
• getsubopt(3) — parse suboption arguments from a string
• gettid(2) — get thread identification
• gettimeofday(2) — get / set time
• getttyent(3) — get ttys file entry
• getuid(2) — get user identity
• getumask(3) — get file creation mask
• getunwind(2) — copy the unwind data to caller's buffer
• getusershell(3) — get permitted user shells
• getutent(3) — access utmp file entries
• getutmp(3) — copy utmp structure to utmpx, and vice versa
• getw(3) — input and output of words (ints)
• getwchar(3) — read a wide character from standard input
• getxattr(2) — retrieve an extended attribute value
• glob(3) — find pathnames matching a pattern, free memory from glob()
• glob(7) — globbing pathnames
• gnu_get_libc_version(3) — get glibc version and release
• grantpt(3) — grant access to the slave pseudoterminal
• group(5) — user group file
• group_member(3) — test whether a process is in a group
• gsignal(3) — software signal facility
• hash(3) — hash database access method
• hd(4) — MFM/IDE hard disk devices
• hier(7) — description of the filesystem hierarchy
• host.conf(5) — resolver configuration file
• hostname(7) — hostname resolution description
• hosts(5) — static table lookup for hostnames
• hosts.equiv(5) — list of hosts and users that are granted trusted
• hpsa(4) — HP Smart Array SCSI driver
• hsearch(3) — hash table management
• hypot(3) — Euclidean distance function
• icmp(7) — Linux IPv4 ICMP kernel module.
• iconv(1) — convert text from one character encoding to another
• iconv(3) — perform character set conversion
• iconv_close(3) — deallocate descriptor for character set conversion
• iconv_open(3) — allocate descriptor for character set conversion
• iconvconfig(8) — create iconv module configuration cache
• idle(2) — make process 0 idle
• if_nameindex(3) — get network interface names and indexes
• if_nametoindex(3) — mappings between network interface
• ilogb(3) — get integer exponent of a floating-point value
• index(3) — locate character in string
• inet(3) — Internet address manipulation routines
• inet_net_pton(3) — Internet network number conversion
• inet_ntop(3) — convert IPv4 and IPv6 addresses from binary to text form
• inet_pton(3) — convert IPv4 and IPv6 addresses from text to binary form
• init_module(2) — load a kernel module
• initgroups(3) — initialize the supplementary group access list
• initrd(4) — boot loader initialized RAM disk
• inode(7) — file inode information
• inotify(7) — monitoring filesystem events
• inotify_add_watch(2) — add a watch to an initialized inotify instance
• inotify_init(2) — initialize an inotify instance
• inotify_rm_watch(2) — remove an existing watch from an inotify instance
• insque(3) — insert/remove an item from a queue
• intro(1) — introduction to user commands
• intro(2) — introduction to system calls
• intro(3) — introduction to library functions
• intro(4) — introduction to special files
• intro(5) — introduction to file formats and filesystems
• intro(6) — introduction to games
• intro(7) — introduction to overview and miscellany section
• intro(8) — introduction to administration and privileged commands
• io_cancel(2) — cancel an outstanding asynchronous I/O operation
• io_destroy(2) — destroy an asynchronous I/O context
• io_getevents(2) — read asynchronous I/O events from the completion queue
• io_setup(2) — create an asynchronous I/O context
• io_submit(2) — submit asynchronous I/O blocks for processing
• ioctl(2) — control device
• ioctl_console(2) — ioctls for console terminal and virtual consoles
• ioctl_fat(2) — manipulating the FAT filesystem
• ioctl_ficlonerange(2) — share some the data of one file with another file
• ioctl_fideduperange(2) — share some the data of one file with another file
• ioctl_fslabel(2) — get or set a filesystem label
• ioctl_getfsmap(2) — retrieve the physical layout of the filesystem
• ioctl_iflags(2) — ioctl() operations for inode flags
• ioctl_ns(2) — ioctl() operations for Linux namespaces
• ioctl_tty(2) — ioctls for terminals and serial lines
• ioctl_userfaultfd(2) — create a file descriptor for handling page faults in user
• ioperm(2) — set port input/output permissions
• iopl(2) — change I/O privilege level
• ioprio_set(2) — get/set I/O scheduling class and priority
• ip(7) — Linux IPv4 protocol implementation
• ipc(2) — System V IPC system calls
• ipc_namespaces(7) — overview of Linux IPC namespaces
• ipv6(7) — Linux IPv6 protocol implementation
• isalpha(3) — character classification functions
• isatty(3) — test whether a file descriptor refers to a terminal
• isfdtype(3) — test file type of a file descriptor
• isgreater(3) — floating-point relational tests without exception for NaN
• iso_8859-1(7) — ISO 8859-1 character set encoded in octal, decimal,
• iso_8859-10(7) — ISO 8859-10 character set encoded in octal, decimal,
• iso_8859-11(7) — ISO 8859-11 character set encoded in octal, decimal,
• iso_8859-13(7) — ISO 8859-13 character set encoded in octal, decimal,
• iso_8859-14(7) — ISO 8859-14 character set encoded in octal, decimal,
• iso_8859-15(7) — ISO 8859-15 character set encoded in octal, decimal,
• iso_8859-16(7) — ISO 8859-16 character set encoded in octal, decimal,
• iso_8859-2(7) — ISO 8859-2 character set encoded in octal, decimal,
• iso_8859-3(7) — ISO 8859-3 character set encoded in octal, decimal,
• iso_8859-4(7) — ISO 8859-4 character set encoded in octal, decimal,
• iso_8859-5(7) — ISO 8859-5 character set encoded in octal, decimal,
• iso_8859-6(7) — ISO 8859-6 character set encoded in octal, decimal,
• iso_8859-7(7) — ISO 8859-7 character set encoded in octal, decimal,
• iso_8859-8(7) — ISO 8859-8 character set encoded in octal, decimal,
• iso_8859-9(7) — ISO 8859-9 character set encoded in octal, decimal,
• issue(5) — prelogin message and identification file
• iswalnum(3) — test for alphanumeric wide character
• iswalpha(3) — test for alphabetic wide character
• iswblank(3) — test for whitespace wide character
• iswcntrl(3) — test for control wide character
• iswctype(3) — wide-character classification
• iswdigit(3) — test for decimal digit wide character
• iswgraph(3) — test for graphic wide character
• iswlower(3) — test for lowercase wide character
• iswprint(3) — test for printing wide character
• iswpunct(3) — test for punctuation or symbolic wide character
• iswspace(3) — test for whitespace wide character
• iswupper(3) — test for uppercase wide character
• iswxdigit(3) — test for hexadecimal digit wide character
• j0(3)
• kcmp(2) — compare two processes to determine if they share a kernel resource
• kernel_lockdown(7) — kernel image access prevention feature
• kexec_load(2) — load a new kernel for later execution
• key_setsecret(3) — interfaces to rpc keyserver daemon
• keyctl(2) — manipulate the kernel's key management facility
• keyrings(7) — in-kernel key management and retention facility
• kill(2) — send signal to a process
• killpg(3) — send signal to a process group
• koi8-r(7) — Russian character set encoded in octal, decimal,
• koi8-u(7) — Ukrainian character set encoded in octal, decimal,
• ld.so(8) — dynamic linker/loader
• ldconfig(8) — configure dynamic linker run-time bindings
• ldd(1) — print shared object dependencies
• ldexp(3) — multiply floating-point number by integral power of 2
• lgamma(3)
• libc(7) — overview of standard C libraries on Linux
• libtool(1) — compile, build, install and uninstall libraries
• libtoolize(1) — add libtool support to your Makefile
• link(2) — make a new name for a file
• lio_listio(3) — initiate a list of I/O requests
• lirc(4) — lirc devices
• list(3) — implementation of a doubly linked list
• listen(2) — listen for connections on a socket
• listxattr(2) — list extended attribute names
• llseek(2) — reposition read/write file offset
• locale(1) — get locale-specific information
• locale(5) — describes a locale definition file
• locale(7) — description of multilanguage support
• localeconv(3) — get numeric formatting information
• localedef(1) — compile locale definition files
• lockf(3) — apply, test or remove a POSIX lock on an open file
• log(3) — natural logarithmic function
• log10(3) — base-10 logarithmic function
• log1p(3) — logarithm of 1 plus argument
• log2(3) — base-2 logarithmic function
• logb(3) — get exponent of a floating-point value
• login(3) — write utmp and wtmp entries
• lookup_dcookie(2) — return a directory entry's path
• loop(4) — loop devices
• lp(4) — line printer devices
• lrint(3) — round to nearest integer
• lround(3) — round to
• lsearch(3) — linear search of an array
• lseek(2) — reposition read/write file offset
• lseek64(3) — reposition 64-bit read/write file offset
• madvise(2) — give advice about use of memory
• mailaddr(7) — mail addressing description
• makecontext(3) — manipulate user context
• makedev(3) — manage a device number
• mallinfo(3) — obtain memory allocation information
• malloc(3) — allocate and free dynamic memory
• malloc_get_state(3) — record and restore state of malloc implementation
• malloc_hook(3) — malloc debugging variables
• malloc_info(3) — export malloc state to a stream
• malloc_stats(3) — print memory allocation statistics
• malloc_trim(3) — release free memory from the heap
• malloc_usable_size(3) — obtain size of block of memory allocated from heap
• mallopt(3) — set memory allocation parameters
• man(7) — macros to format man pages
• man-pages(7) — conventions for writing Linux man pages
• math_error(7) — detecting errors from mathematical functions
• matherr(3) — SVID math library exception handling
• mbind(2) — set memory policy for a memory range
• mblen(3) — determine number of bytes in next multibyte character
• mbrlen(3) — determine number of bytes in next multibyte character
• mbrtowc(3) — convert a multibyte sequence to a wide character
• mbsinit(3) — test for initial shift state
• mbsnrtowcs(3) — convert a multibyte string to a wide-character string
• mbsrtowcs(3) — convert a multibyte string to a wide-character string
• mbstowcs(3) — convert a multibyte string to a wide-character string
• mbtowc(3) — convert a multibyte sequence to a wide character
• mcheck(3) — heap consistency checking
• mem(4) — system memory, kernel memory and system ports
• membarrier(2) — issue memory barriers on a set of threads
• memccpy(3) — copy memory area
• memchr(3) — scan memory for a character
• memcmp(3) — compare memory areas
• memcpy(3) — copy memory area
• memfd_create(2) — create an anonymous file
• memfrob(3) — frobnicate (encrypt) a memory area
• memmem(3) — locate a substring
• memmove(3) — copy memory area
• mempcpy(3) — copy memory area
• memset(3) — fill memory with a constant byte
• memusage(1) — profile memory usage of a program
• memusagestat(1) — generate graphic from memory profiling data
• migrate_pages(2) — move all pages in a process to another set of nodes
• mincore(2) — determine whether pages are resident in memory
• mkdir(2) — create a directory
• mkdtemp(3) — create a unique temporary directory
• mkfifo(3) — make a FIFO special file (a named pipe)
• mknod(2) — create a special or ordinary file
• mkstemp(3) — create a unique temporary file
• mktemp(3) — make a unique temporary filename
• mlock(2) — lock and unlock memory
• mmap(2) — map or unmap files or devices into memory
• mmap2(2) — map files or devices into memory
• modf(3) — extract signed integral and fractional values from
• modify_ldt(2) — get or set a per-process LDT entry
• motd(5) — message of the day
• mount(2) — mount filesystem
• mount_namespaces(7) — overview of Linux mount namespaces
• mouse(4) — serial mouse interface
• move_pages(2) — move individual pages of a process to another node
• mpool(3) — shared memory buffer pool
• mprotect(2) — set protection on a region of memory
• mq_close(3) — close a message queue descriptor
• mq_getattr(3) — get/set message queue attributes
• mq_getsetattr(2) — get/set message queue attributes
• mq_notify(3) — register for notification when a message is available
• mq_open(3) — open a message queue
• mq_overview(7) — overview of POSIX message queues
• mq_receive(3) — receive a message from a message queue
• mq_send(3) — send a message to a message queue
• mq_unlink(3) — remove a message queue
• mremap(2) — remap a virtual memory address
• msgctl(2) — System V message control operations
• msgget(2) — get a System V message queue identifier
• msgop(2) — System V message queue operations
• msr(4) — x86 CPU MSR access device
• msync(2) — synchronize a file with a memory map
• mtrace(1) — interpret the malloc trace log
• mtrace(3) — malloc tracing
• namespaces(7) — overview of Linux namespaces
• nan(3) — return 'Not a Number'
• nanosleep(2) — high-resolution sleep
• netdevice(7) — low-level access to Linux network devices
• netlink(3) — Netlink macros
• netlink(7) — communication between kernel and user space (AF_NETLINK)
• network_namespaces(7) — overview of Linux network namespaces
• networks(5) — network name information
• newlocale(3) — create, modify, and free a locale object
• nextafter(3)
• nextup(3)
• nfsservctl(2) — syscall interface to kernel nfs daemon
• nice(2) — change process priority
• nl_langinfo(3) — query language and locale information
• nologin(5) — prevent unprivileged users from logging into the system
• nptl(7) — Native POSIX Threads Library
• nscd(8) — name service cache daemon
• nscd.conf(5) — name service cache daemon configuration file
• nss(5) — Name Service Switch configuration file
• nsswitch.conf(5) — Name Service Switch configuration file
• ntp_gettime(3) — get time parameters (NTP daemon interface)
• null(4) — data sink
• numa(7) — overview of Non-Uniform Memory Architecture
• offsetof(3) — offset of a structure member
• on_exit(3) — register a function to be called at normal process termination
• open(2) — open and possibly create a file
• open_by_handle_at(2) — obtain handle
• open_memstream(3) — open a dynamic memory buffer stream
• openat2(2) — open and possibly create a file (extended)
• opendir(3) — open a directory
• openpty(3) — terminal utility functions
• operator(7) — C operator precedence and order of evaluation
• outb(2) — port I/O
• packet(7) — packet interface on device level
• passwd(5) — password file
• path_resolution(7) — how a pathname is resolved to a file
• pause(2) — wait for signal
• pciconfig_read(2) — pci device information handling
• perf_event_open(2) — set up performance monitoring
• perfmonctl(2) — interface to IA-64 performance monitoring unit
• perror(3) — print a system error message
• persistent-keyring(7) — per-user persistent keyring
• personality(2) — set the process execution domain
• pid_namespaces(7) — overview of Linux PID namespaces
• pidfd_getfd(2) — obtain a duplicate of another process's file descriptor
• pidfd_open(2) — obtain a file descriptor that refers to a process
• pidfd_send_signal(2) — send a signal to a process specified by a file descriptor
• pipe(2) — create pipe
• pipe(7) — overview of pipes and FIFOs
• pivot_root(2) — change the root mount
• pkey_alloc(2) — allocate or free a protection key
• pkeys(7) — overview of Memory Protection Keys
• pldd(1) — display dynamic shared objects linked into a process
• poll(2) — wait for some event on a file descriptor
• popen(3) — pipe stream to or from a process
• posix_fadvise(2) — predeclare an access pattern for file data
• posix_fallocate(3) — allocate file space
• posix_madvise(3) — give advice about patterns of memory usage
• posix_memalign(3) — allocate aligned memory
• posix_openpt(3) — open a pseudoterminal device
• posix_spawn(3) — spawn a process
• posixoptions(7) — optional parts of the POSIX standard
• pow(3) — power functions
• pow10(3) — base-10 power functions
• prctl(2) — operations on a process or thread
• pread(2) — read from or write to a file descriptor at a given offset
• printf(3) — formatted output conversion
• proc(5) — process information pseudo-filesystem
• process-keyring(7) — per-process shared keyring
• process_madvise(2) — give advice about use of memory to a process
• process_vm_readv(2) — transfer data between process address spaces
• profil(3) — execution time profile
• program_invocation_name(3) — \
• protocols(5) — protocols definition file
• psignal(3) — print signal description
• pthread_atfork(3) — register fork handlers
• pthread_attr_init(3) — initialize and destroy
• pthread_attr_setaffinity_np(3) — set/get
• pthread_attr_setdetachstate(3)
• pthread_attr_setguardsize(3) — set/get guard size
• pthread_attr_setinheritsched(3) — set/get
• pthread_attr_setschedparam(3) — set/get
• pthread_attr_setschedpolicy(3) — set/get
• pthread_attr_setscope(3) — set/get contention scope
• pthread_attr_setsigmask_np(3) — set/get
• pthread_attr_setstack(3) — set/get stack
• pthread_attr_setstackaddr(3)
• pthread_attr_setstacksize(3) — set/get stack size
• pthread_cancel(3) — send a cancellation request to a thread
• pthread_cleanup_push(3) — push and pop
• pthread_cleanup_push_defer_np(3) — push and pop
• pthread_create(3) — create a new thread
• pthread_detach(3) — detach a thread
• pthread_equal(3) — compare thread IDs
• pthread_exit(3) — terminate calling thread
• pthread_getattr_default_np(3)
• pthread_getattr_np(3) — get attributes of created thread
• pthread_getcpuclockid(3) — retrieve ID of a thread's CPU time clock
• pthread_join(3) — join with a terminated thread
• pthread_kill(3) — send a signal to a thread
• pthread_kill_other_threads_np(3) — terminate all other threads in process
• pthread_mutex_consistent(3) — make a robust mutex consistent
• pthread_mutexattr_getpshared(3) — get/set
• pthread_mutexattr_init(3) — initialize and
• pthread_mutexattr_setrobust(3) — get and set the robustness attribute of a mutex attributes object
• pthread_rwlockattr_setkind_np(3) — set/get
• pthread_self(3) — obtain ID of the calling thread
• pthread_setaffinity_np(3) — set/get
• pthread_setcancelstate(3)
• pthread_setconcurrency(3) — set/get
• pthread_setname_np(3) — set/get the name of a thread
• pthread_setschedparam(3) — set/get
• pthread_setschedprio(3) — set scheduling priority of a thread
• pthread_sigmask(3) — examine and change mask of blocked signals
• pthread_sigqueue(3) — queue a signal and data to a thread
• pthread_spin_init(3) — initialize or destroy a spin lock
• pthread_spin_lock(3)
• pthread_testcancel(3) — request delivery of any pending cancellation request
• pthread_tryjoin_np(3) — try to join with a
• pthread_yield(3) — yield the processor
• pthreads(7) — POSIX threads
• ptrace(2) — process trace
• pts(4) — pseudoterminal master and slave
• ptsname(3) — get the name of the slave pseudoterminal
• pty(7) — pseudoterminal interfaces
• putenv(3) — change or add an environment variable
• putgrent(3) — write a group database entry to a file
• putpwent(3) — write a password file entry
• puts(3) — output of characters and strings
• putwchar(3) — write a wide character to standard output
• qecvt(3) — convert a floating-point number to a string
• qsort(3) — sort an array
• query_module(2) — query the kernel for various bits pertaining to modules
• queue(7) — implementations of linked lists and queues
• quotactl(2) — manipulate disk quotas
• raise(3) — send a signal to the caller
• ram(4) — ram disk device
• rand(3) — pseudo-random number generator
• random(3) — random number generator
• random(4) — kernel random number source devices
• random(7) — overview of interfaces for obtaining randomness
• random_r(3) — reentrant
• raw(7) — Linux IPv4 raw sockets
• rcmd(3) — routines for returning a
• re_comp(3) — BSD regex functions
• read(2) — read from a file descriptor
• readahead(2) — initiate file readahead into page cache
• readdir(2) — read directory entry
• readdir(3) — read a directory
• readdir_r(3) — read a directory
• readlink(2) — read value of a symbolic link
• readv(2) — read or write data into multiple buffers
• realpath(3) — return the canonicalized absolute pathname
• reboot(2) — reboot or enable/disable Ctrl-Alt-Del
• recno(3) — record number database access method
• recv(2) — receive a message from a socket
• recvmmsg(2) — receive multiple messages on a socket
• regex(3) — POSIX regex functions
• regex(7) — POSIX.2 regular expressions
• remainder(3) — \
• remap_file_pages(2) — create a nonlinear file mapping
• remove(3) — remove a file or directory
• removexattr(2) — remove an extended attribute
• remquo(3) — remainder and part of quotient
• rename(2) — change the name or location of a file
• repertoiremap(5) — map symbolic character names to Unicode code points
• request_key(2) — request a key from the kernel's key management facility
• resolv.conf(5) — resolver configuration file
• resolver(3) — resolver routines
• restart_syscall(2) — restart a system call after interruption by a stop signal
• rewinddir(3) — reset directory stream
• rexec(3) — return stream to a remote command
• rint(3) — round
• rmdir(2) — delete a directory
• round(3) — round to nearest integer, away from zero
• rpc(3) — library routines for remote procedure calls
• rpc(5) — RPC program number data base
• rpmatch(3) — determine if the answer to a question is affirmative or negative
• rt_sigqueueinfo(2) — queue a signal and data
• rtc(4) — real-time clock
• rtime(3) — get time from a remote machine
• rtld-audit(7) — auditing API for the dynamic linker
• rtnetlink(3) — macros to manipulate rtnetlink messages
• rtnetlink(7) — Linux routing socket
• s390_guarded_storage(2) — operations with z/Architecture guarded storage facility
• s390_pci_mmio_write(2) — transfer data to/from PCI
• s390_runtime_instr(2) — enable/disable s390 CPU run-time instrumentation
• s390_sthyi(2) — emulate STHYI instruction
• scalb(3) — multiply floating-point number
• scalbln(3)
• scandir(3) — scan
• scanf(3) — input format conversion
• sched(7) — overview of CPU scheduling
• sched_get_priority_max(2) — get static priority range
• sched_getcpu(3) — determine CPU on which the calling thread is running
• sched_rr_get_interval(2) — get the SCHED_RR interval for the named process
• sched_setaffinity(2) — \
• sched_setattr(2)
• sched_setparam(2) — set and get scheduling parameters
• sched_setscheduler(2)
• sched_yield(2) — yield the processor
• sd(4) — driver for SCSI disk drives
• seccomp(2) — operate on Secure Computing state of the process
• seccomp_unotify(2) — Seccomp user-space notification mechanism
• securetty(5) — list of terminals on which root is allowed to login
• seekdir(3) — set the position of the next readdir() call in the directory
• select(2)
• select_tut(2) — synchronous I/O multiplexing
• sem_close(3) — close a named semaphore
• sem_destroy(3) — destroy an unnamed semaphore
• sem_getvalue(3) — get the value of a semaphore
• sem_init(3) — initialize an unnamed semaphore
• sem_open(3) — initialize and open a named semaphore
• sem_overview(7) — overview of POSIX semaphores
• sem_post(3) — unlock a semaphore
• sem_unlink(3) — remove a named semaphore
• sem_wait(3) — lock a semaphore
• semctl(2) — System V semaphore control operations
• semget(2) — get a System V semaphore set identifier
• semop(2) — System V semaphore operations
• send(2) — send a message on a socket
• sendfile(2) — transfer data between file descriptors
• sendmmsg(2) — send multiple messages on a socket
• services(5) — Internet network services list
• session-keyring(7) — session shared process keyring
• set_mempolicy(2) — set default NUMA memory policy for a thread and its children
• set_thread_area(2) — manipulate thread-local storage information
• set_tid_address(2) — set pointer to thread ID
• setaliasent(3) — read an alias entry
• setbuf(3) — stream buffering operations
• setenv(3) — change or add an environment variable
• seteuid(2) — set effective user or group ID
• setfsgid(2) — set group identity used for filesystem checks
• setfsuid(2) — set user identity used for filesystem checks
• setgid(2) — set group identity
• setjmp(3) — performing a nonlocal goto
• setlocale(3) — set the current locale
• setlogmask(3) — set log priority mask
• setnetgrent(3)
• setns(2) — reassociate thread with a namespace
• setpgid(2) — set/get process group
• setresuid(2) — set real, effective, and saved user or group ID
• setreuid(2) — set real and/or effective user or group ID
• setsid(2) — creates a session and sets the process group ID
• setuid(2) — set user identity
• setup(2) — setup devices and filesystems, mount root filesystem
• setxattr(2) — set an extended attribute value
• sgetmask(2) — manipulation of signal mask (obsolete)
• shells(5) — pathnames of valid login shells
• shm_open(3) — create/open or unlink POSIX shared memory objects
• shm_overview(7) — overview of POSIX shared memory
• shmctl(2) — System V shared memory control
• shmget(2) — allocates a System V shared memory segment
• shmop(2) — System V shared memory operations
• shutdown(2) — shut down part of a full-duplex connection
• sigaction(2) — examine and change a signal action
• sigaltstack(2) — set and/or get signal stack context
• sigevent(7) — structure for notification from asynchronous routines
• siginterrupt(3) — allow signals to interrupt system calls
• signal(2) — ANSI C signal handling
• signal(7) — overview of signals
• signal-safety(7) — async-signal-safe functions
• signalfd(2) — create a file descriptor for accepting signals
• signbit(3) — test sign of a real floating-point number
• significand(3)
• sigpause(3) — atomically release blocked signals and wait for interrupt
• sigpending(2) — examine pending signals
• sigprocmask(2) — examine and change blocked signals
• sigqueue(3) — queue a signal and data to a process
• sigreturn(2) — return from signal handler and cleanup stack frame
• sigset(3) — System V signal API
• sigsetops(3) — POSIX
• sigsuspend(2) — wait for a signal
• sigvec(3) — BSD signal API
• sigwait(3) — wait for a signal
• sigwaitinfo(2) — synchronously wait
• sin(3) — sine function
• sincos(3) — calculate sin and cos simultaneously
• sinh(3) — hyperbolic sine function
• sk98lin(4) — Marvell/SysKonnect Gigabit Ethernet driver v6.21
• slabinfo(5) — kernel slab allocator statistics
• sleep(3) — sleep for a specified number of seconds
• slist(3) — implementation of a singly linked list
• sln(8) — create symbolic links
• smartpqi(4) — Microsemi Smart Family SCSI driver
• sock_diag(7) — obtaining information about sockets
• sockatmark(3) — determine whether socket is at out-of-band mark
• socket(2) — create an endpoint for communication
• socket(7) — Linux socket interface
• socketcall(2) — socket system calls
• socketpair(2) — create a pair of connected sockets
• splice(2) — splice data to/from a pipe
• sprof(1) — read and display shared object profiling data
• spu_create(2) — create a new spu context
• spu_run(2) — execute an SPU context
• spufs(7) — SPU filesystem
• sqrt(3) — square root function
• st(4) — SCSI tape device
• stailq(3) — implementation of a singly linked tail queue
• standards(7) — C and UNIX Standards
• stat(2) — get file status
• statfs(2) — get filesystem statistics
• statvfs(3) — get filesystem statistics
• statx(2) — get file status (extended)
• stdarg(3) — variable argument lists
• stdin(3) — standard I/O streams
• stdio(3) — standard input/output library functions
• stdio_ext(3)
• stime(2) — set time
• stpcpy(3) — copy a string returning a pointer to its end
• stpncpy(3) — copy a fixed-size string, returning a pointer to its end
• strcasecmp(3) — compare two strings ignoring case
• strcat(3) — concatenate two strings
• strchr(3) — locate character in string
• strcmp(3) — compare two strings
• strcoll(3) — compare two strings using the current locale
• strcpy(3) — copy a string
• strdup(3) — duplicate a string
• strerror(3) — return string describing error number
• strfmon(3) — convert monetary value to a string
• strfromd(3) — convert a floating-point value into
• strfry(3) — randomize a string
• strftime(3) — format date and time
• string(3) — string operations
• strlcpy(3) — size-bounded string copying and concatenation
• strlen(3) — calculate the length of a string
• strnlen(3) — determine the length of a fixed-size string
• strpbrk(3) — search a string for any of a set of bytes
• strptime(3) — convert a string representation of time to a time tm structure
• strsep(3) — extract token from string
• strsignal(3) — return string describing signal
• strspn(3) — get length of a prefix substring
• strstr(3) — locate a substring
• strtod(3) — convert ASCII string to floating-point number
• strtoimax(3) — convert string to integer
• strtok(3) — extract tokens from strings
• strtol(3) — convert a string to a long integer
• strtoul(3) — convert a string to an unsigned long integer
• strverscmp(3) — compare two version strings
• strxfrm(3) — string transformation
• subpage_prot(2) — define a subpage protection for an address range
• suffixes(7) — list of file suffixes
• swab(3) — swap adjacent bytes
• swapon(2) — start/stop swapping to file/device
• symlink(2) — make a new name for a file
• symlink(7) — symbolic link handling
• sync(2) — commit filesystem caches to disk
• sync_file_range(2) — sync a file segment with disk
• syscall(2) — indirect system call
• syscalls(2) — Linux system calls
• sysconf(3) — get configuration information at run time
• sysctl(2) — read/write system parameters
• sysfs(2) — get filesystem type information
• sysfs(5) — a filesystem for exporting kernel objects
• sysinfo(2) — return system information
• syslog(2) — read and/or clear kernel message ring buffer;
• syslog(3) — send messages to the system logger
• system(3) — execute a shell command
• system_data_types(7) — overview of system data types
• sysv_signal(3) — signal handling with System V semantics
• sysvipc(7) — System V interprocess communication mechanisms
• tailq(3) — implementation of a doubly linked tail queue
• tan(3) — tangent function
• tanh(3) — hyperbolic tangent function
• tcgetpgrp(3) — get and set terminal foreground process group
• tcgetsid(3) — get session ID
• tcp(7) — TCP protocol
• tee(2) — duplicating pipe content
• telldir(3) — return current location in directory stream
• tempnam(3) — create a name for a temporary file
• termcap(5) — terminal capability database
• termio(7) — System V terminal driver interface
• termios(3)
• tgamma(3) — true gamma function
• thread-keyring(7) — per-thread keyring
• time(1) — time a simple command or give resource usage
• time(2) — get time in seconds
• time(7) — overview of time and timers
• time_namespaces(7) — overview of Linux time namespaces
• timegm(3) — inverses of gmtime and localtime
• timer_create(2) — create a POSIX per-process timer
• timer_delete(2) — delete a POSIX per-process timer
• timer_getoverrun(2) — get overrun count for a POSIX per-process timer
• timer_settime(2) — arm/disarm and fetch
• timeradd(3) — timeval operations
• timerfd_create(2)
• times(2) — get process times
• tkill(2) — send a signal to a thread
• tmpfile(3) — create a temporary file
• tmpfs(5) — a virtual memory filesystem
• tmpnam(3) — create a name for a temporary file
• toascii(3) — convert character to ASCII
• toupper(3) — convert uppercase or lowercase
• towctrans(3) — wide-character transliteration
• towlower(3) — convert a wide character to lowercase
• towupper(3) — convert a wide character to uppercase
• trunc(3) — round to integer, toward zero
• truncate(2) — truncate a file to a specified length
• tsearch(3) — manage a binary search tree
• tty(4) — controlling terminal
• ttyS(4) — serial terminal lines
• ttyname(3) — return name of a terminal
• ttyslot(3) — find the slot of the current user's terminal in some file
• ttytype(5) — terminal device to default terminal type mapping
• tzfile(5) — timezone information
• tzselect(8) — select a timezone
• tzset(3) — initialize time conversion information
• ualarm(3) — schedule signal after given number of microseconds
• udp(7) — User Datagram Protocol for IPv4
• udplite(7) — Lightweight User Datagram Protocol
• ulimit(3) — get and set user limits
• umask(2) — set file mode creation mask
• umount(2) — unmount filesystem
• uname(2) — get name and information about current kernel
• undocumented(3) — undocumented library functions
• ungetwc(3) — push back a wide character onto a FILE stream
• unicode(7) — universal character set
• unimplemented(2) — unimplemented system calls
• units(7) — decimal and binary prefixes
• unix(7) — sockets for local interprocess communication
• unlink(2) — delete a name and possibly the file it refers to
• unlocked_stdio(3) — nonlocking stdio functions
• unlockpt(3) — unlock a pseudoterminal master/slave pair
• unshare(2) — disassociate parts of the process execution context
• updwtmp(3) — append an entry to the wtmp file
• uri(7) — uniform resource identifier (URI), including a URL or URN
• uselib(2) — load shared library
• uselocale(3) — set/get the locale for the calling thread
• user-keyring(7) — per-user keyring
• user-session-keyring(7) — per-user default session keyring
• user_namespaces(7) — overview of Linux user namespaces
• userfaultfd(2) — create a file descriptor for handling page faults in user space
• usleep(3) — suspend execution for microsecond intervals
• ustat(2) — get filesystem statistics
• utf-8(7) — an ASCII compatible multibyte Unicode encoding
• utime(2) — change file last access and modification times
• utimensat(2) — change file timestamps with nanosecond precision
• utmp(5) — login records
• uts_namespaces(7) — overview of Linux UTS namespaces
• vcs(4) — virtual console memory
• vdso(7) — overview of the virtual ELF dynamic shared object
• veth(4) — Virtual Ethernet Device
• vfork(2) — create a child process and block parent
• vhangup(2) — virtually hangup the current terminal
• vm86(2) — enter virtual 8086 mode
• vmsplice(2) — splice user pages to/from a pipe
• vsock(7) — Linux VSOCK address family
• wait(2) — wait for process to change state
• wait4(2) — wait for process to change state, BSD style
• wavelan(4) — AT&T GIS WaveLAN ISA device driver
• wcpcpy(3) — copy a wide-character string, returning a pointer to its end
• wcpncpy(3) — copy a fixed-size string of wide characters,
• wcrtomb(3) — convert a wide character to a multibyte sequence
• wcscasecmp(3) — compare two wide-character strings, ignoring case
• wcscat(3) — concatenate two wide-character strings
• wcschr(3) — search a wide character in a wide-character string
• wcscmp(3) — compare two wide-character strings
• wcscpy(3) — copy a wide-character string
• wcscspn(3) — search a wide-character string for any of a set of wide characters
• wcsdup(3) — duplicate a wide-character string
• wcslen(3) — determine the length of a wide-character string
• wcsncasecmp(3) — compare two fixed-size wide-character strings, ignoring case
• wcsncat(3) — concatenate two wide-character strings
• wcsncmp(3) — compare two fixed-size wide-character strings
• wcsncpy(3) — copy a fixed-size string of wide characters
• wcsnlen(3) — determine the length of a fixed-size wide-character string
• wcsnrtombs(3) — convert a wide-character string to a multibyte string
• wcspbrk(3) — search a wide-character string for any of a set of wide characters
• wcsrchr(3) — search a wide character in a wide-character string
• wcsrtombs(3) — convert a wide-character string to a multibyte string
• wcsspn(3) — advance in a wide-character string, skipping
• wcsstr(3) — locate a substring in a wide-character string
• wcstoimax(3) — convert wide-character string to integer
• wcstok(3) — split wide-character string into tokens
• wcstombs(3) — convert a wide-character string to a multibyte string
• wcswidth(3) — determine columns needed for a fixed-size wide-character string
• wctob(3) — try to represent a wide character as a single byte
• wctomb(3) — convert a wide character to a multibyte sequence
• wctrans(3) — wide-character translation mapping
• wctype(3) — wide-character classification
• wcwidth(3) — determine columns needed for a wide character
• wmemchr(3) — search a wide character in a wide-character array
• wmemcmp(3) — compare two arrays of wide-characters
• wmemcpy(3) — copy an array of wide-characters
• wmemmove(3) — copy an array of wide-characters
• wmemset(3) — fill an array of wide-characters with a constant wide character
• wordexp(3) — perform word expansion like a posix-shell
• wprintf(3) — formatted
• write(2) — write to a file descriptor
• x25(7) — ITU-T X.25 / ISO-8208 protocol interface
• xattr(7) — Extended attributes
• xcrypt(3) — RFS password encryption
• xdr(3) — library routines for external data representation
• y0(3)
• zdump(8) — timezone dumper
• zic(8) — timezone compiler