Linux Command




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

-a ignore, for compatibility with other versions

-Z, --context
print only the security context of the current user

-g, --group
print only the effective group ID

-G, --groups
print all group IDs

-n, --name
print a name instead of a number, for -ugG

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

-u, --user
print only the effective user ID

--help display this help and exit

output version information and exit

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

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