chgrp

chgrp
	Cross-platform
Type	Command
License	Plan 9: MIT License

The chgrp (from change group)

operating systems to change the group associated with a file system object (such as a computer file, directory

, or link) to one of which they are a member. A file system object has 3 sets of access permissions, one set for the owner, one set for the group and one set for others. Changing the group of an object could be used to change which users can write to a file.

History

The chgrp command was originally developed as part of the

AT&T Bell Laboratories

.

It is also available in the Plan 9 and Inferno operating systems and in most Unix-like systems.

The chgrp command has also been ported to the IBM i operating system.^[1]

Syntax

chgrp [options] group FSO

The group parameter specifies the new group with which the files or directories should be associated. It may either be a symbolic name or an
identifier
.
The FSO specifies one or more file system objects, which may be the result of a glob expression like *.conf.

Frequently implemented options

-R recurse through subdirectories.

-v verbosely output names of objects changed. Most useful when "FSO" is a list.

-f force or forge ahead with other objects even if an error is encountered.

Example

$ ls -l *.conf
-rw-rw-r--   1 gbeeker  wheel          3545 Nov 04 2011  prog.conf
-rw-rw-r--   1 gbeeker  wheel          3545 Nov 04 2011  prox.conf
$ chgrp staff *.conf
$ ls -l *.conf
-rw-rw-r--   1 gbeeker  staff          3545 Nov 04 2011  prog.conf
-rw-rw-r--   1 gbeeker  staff          3545 Nov 04 2011  prox.conf

The above command changes the group associated with file prog.conf from wheel to staff (provided the executing user is a member of that group). This could be used to allow members of staff to modify the configuration for programs prog and prox.

References

^ IBM. "IBM System i Version 7.2 Programming Qshell" (PDF). IBM. Archived (PDF) from the original on 2020-09-18. Retrieved 2020-09-05.

External links

chgrp: change the file group ownership – Shell and Utilities Reference,
The Single UNIX Specification, Version 4 from The Open Group

chgrp(1) – Plan 9 Programmer's Manual, Volume 1
chgrp(1) – Inferno General commands Manual

[1] IBM. "IBM System i Version 7.2 Programming Qshell" (PDF). IBM. Archived (PDF) from the original on 2020-09-18. Retrieved 2020-09-05.

[1]

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Categories Standard Unix programs Unix SUS2008 utilities List

v t e Plan 9 command-line interface programs and shell builtins
File system	chmod chgrp cmp cp dd du file gzip ls mkdir pwd rm split tee touch
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v t e GNU Core Utilities command-line interface programs
File system	chcon chmod chown chgrp cksum cp dd df dir dircolors install ln ls mkdir mkfifo mknod mktemp mv realpath rm rmdir shred sync touch truncate vdir
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