id1

Usage

Overview

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

-a

ignore, for compatibility with other versions

-Z, --context

print only the security context of the process

-g, --group

print only the effective group ID

-G, --groups

print all group IDs

-n, --name

print a name instead of a number, for -u, -g, -G

-r, --real

print the real ID instead of the effective ID, with -u, -g, -G

-u, --user

print only the effective user ID

-z, --zero

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

--help

display this help and exit

--version

output version information and exit

Without any OPTION, print some useful set of identified information.