id - Unix, Linux Command
NAME
id - print real and effective user and group IDs
SYNOPSIS
id [OPTION]... [USERNAME]
DESCRIPTION
Print user and group information for the specified USERNAME, or (when USERNAME omitted) for the current user.
OPTIONS
| TAG |
DESCRIPTION |
| -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. |
EXAMPLES
EXAMPLE-1:
To print user name, UID of all the group to which the user belongs
$ id -a
output:
~$ id -a
uid=1000(ubuntu) gid=1000(ubuntu) groups=1000(ubuntu),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),111(libvirtd),112(lpadmin),113(sambashare)
EXAMPLE-2:
To print all different group IDs (effective, real and supplementary):
$ id -G
output:
$ id -G
1000 4 24 27 30 46 111 112 113
EXAMPLE-3:
To print the effective group ID
$ id -g
output:
id -g
1000
EXAMPLE-4:
To print the effective user ID
$ id -u
output:
id -u
1000
EXAMPLE-5:
To print the specific user information:
id of ubuntu user
$ id ubuntu
output:
$ id ubuntu
uid=1000(ubuntu) gid=1000(ubuntu) groups=1000(ubuntu),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),111(libvirtd),112(lpadmin),113(sambashare)
Print
