shell-cmdline(3)

Library Functions Manual

shell-cmdline(3)

NAME

cmdline_foreach, cmdline_get - parses and get values from `/proc/cmdline`

SYNOPSIS

•cmdline_foreach "proc-cmdline-data" "handler-function"

•cmdline_get "name-for-result" "name" ["proc-cmdline-data"]

DESCRIPTION

Collection of functions to parse and get values from `/proc/cmdline`. Because `/proc/cmdline` isn't just shell command line we need to parse it differently. This string can have repetitions of parameters, and only the last value makes sense, parameter names may contain characters illegal characters for variables in a shell.

cmdline_foreach

Function runs handler-function for each variable in proc-cmdline-data. Returns nothing.

cmdline_get

Function finds specified by name variable in `/proc/cmdline` or in proc-cmdline-data and stores result into variable passed by name-for-result. Usage example:

read cmdline < /proc/cmdline
cmdline_get 'initrd_value' 'initrd' "$cmdline"
echo "$initrd_value"

cmdline_get 'initrd_value' 'initrd'
echo "$initrd_value"

AUTHOR

Authors and contributors of the programs included in the libshell package are listed in the COPYING file.

BUGS

Report bugs to the authors.

2022-06-06