chgrp
Permissions
Usage
chgrp [group] [path]Changes only a file's group, which chown can also do with :group; unless you are root you may only assign a group you belong to.
Common flags
| Flag | Meaning |
|---|---|
| -R | Apply to a whole tree |
| -h | Change the symlink itself |
| -v | Report each change |
| --reference | GNU: take the group from another file |
Examples
chgrp -R developers /srv/projectWhole tree over to the developers group.
chgrp staff notes.txtWorks only if you belong to staff.
Numeric and symbolic modes name the same thing: 755 and u=rwx,go=rx are the same permission.
How to read this
- Square brackets [ ] mark a part you may leave out.
- An ellipsis … means you can list more than one.
- Flags are case-sensitive — in some commands -r and -R do different things.
Questions
Q. What does chgrp do?
Changes only a file's group, which chown can also do with :group; unless you are root you may only assign a group you belong to.
Q. How do I type it?
chgrp [group] [path] — square brackets mark the parts you can leave out.
Q. How many flags are worth knowing?
4 are listed here; the full set is in man chgrp. This command sits under Permissions.
Related commands
man page: man chgrp