Linux id command

Linux Command Manual

The Linux id command is used to display the ID of the user and the ID of the group to which they belong.

The id command displays the actual and effective IDs of the user and the groups to which they belong. If the two IDs are the same, only the actual ID is displayed. If only the user name is specified, the ID of the current user is displayed.

Syntax

id [-gGnru][--help][--version][User Name]

Parameter Description:

• -g or--group 　Display ID of the group the user belongs to.
• -G or--groups 　Display ID of supplementary groups the user belongs to.
• -n or--name 　Display user, group or supplementary group name.
• -r or--real 　Display actual ID.
• -u or--user 　Display user ID.
• -help 　Display help.
• -version 　Display version information.

Online Examples

Display Current User Information

# id //Display Current User ID
uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel) context=root:system_r:unconfined_t

Display User Group IDs

# id -g
0

Display All Group IDs

# id -g
0 1 2 3 4 5 6 10

Display User Information

# id hnlinux

Linux Command Manual