Screenshot of the chgrp command manual

The chgrp command is used by unprivileged users on Unix-like systems to change the group associated with a file. Unlike the chown command, chgrp allows regular users to change groups, but only to one of which they are a member.

Usage

The general syntax of the chgrp command is:

chgrp group target1 target2 ..]

• The group parameter indicates the new group with which the targets should be associated.
• The target1 parameter indicates the files or directories for which the change should be made.
• The target2 parameter indicates optional additional files or directories for which the change should be made.

Footnote: The group parameter may either be a symbolic name or an identifier.

Usage example

$ls -l ttt
-rw-r--r--   1 gbeeker  staff           545 Nov 04 2004  ttt
$chgrp system ttt
$ls -l ttt
-rw-r--r--   1 gbeeker  system          545 Nov 04 2004  ttt

The above command changes the group associated with ttt to 'system', provided the executing user is a member of that group.

See also

• chown
• Group identifier (Unix)
• List of Unix programs

External links

• chgrp: change the file group ownership – Commands & Utilities Reference, The Single UNIX® Specification, Issue 6 from The Open Group
• chgrp(1): change group ownership – Linux man page