chgrp
| chgrp | |
|---|---|
 Example usage of chgrp command to change the files' groups | |
| Developer | AT&T Bell Laboratories |
| Release | May 1975 |
| Written in | Plan 9: C |
| Operating system | Unix, Unix-like, Plan 9, Inferno, IBM i |
| Platform | Cross-platform |
| Type | Command |
| License | Plan 9: MIT License |
chgrp, short for change group, is a shell command for changing the group associated with a Unix-based file system file – including special files such as directories. Changing the group of a file is restricted to a super-user (such as via sudo) or to the file's owning user if the user is in the specified group.
A file has access permissions for the owning user, a group and for others. Changing the group for a file changes access to it based on users' group memberships.