Linux "id" Command Line Options and Examples

print real and effective user and group IDs

Print user and group information for the specified USER, or (when USER omitted) for the current user.

Usage:

id [OPTION]... [USER]

Command Line Options:

-a

for compatibility with other versions


                            id -a ...

-Z

print only the security context of the process


                            id -Z ...

-g

print only the effective group ID


                            id -g ...

-G

print all group IDs


                            id -G ...

-n

print a name instead of a number, for -ugG


                            id -n ...

-r

print the real ID instead of the effective ID, with -ugG


                            id -r ...

-u

print only the effective user ID


                            id -u ...

-z

delimit entries with NUL characters, not whitespace;not permitted in default format


                            id -z ...

--help

display this help and exit


                            id --help ...

--version

output version information and exitWithout any OPTION, print some useful set of identified information.AUTHORWritten by Arnold Robbins and David MacKenzie.REPORTING BUGSGNU coreutils online help: <http://www.gnu.org/software/coreutils/>Report id translation bugs to <http://translationproject.org/team/>COPYRIGHTCopyright © 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.


                            id --version ...