Content-type: text/html Man page of chgrp

chgrp

Section: User Commands (1)
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NAME

chgrp - Changes the group ownership of a file or directory  

SYNOPSIS

chgrp [-fhR] group file

The chgrp command changes the group associated with the specified file or directory to group.
 

STANDARDS

Interfaces documented on this reference page conform to industry standards as follows:

chgrp:  XPG4, XPG4-UNIX

Refer to the standards(5) reference page for more information about industry standards and associated tags.
 

OPTIONS

[Compaq]  Suppresses all error reporting. [Compaq]  If file is a symbolic link, the command chgrp -h file changes the group of the symbolic link. The command chgrp file changes the group of the file referenced by the symbolic link. Causes chgrp to descend recursively through its directory arguments, setting the specified group ID.
 

OPERANDS

A group name from the group database or a numeric group ID. Either specifies a group ID to be given to each file named by one of the file operands. If a numeric group operand exists in the group database as a group name, the group ID number associated with that group name is used as the group ID. A pathname of a file whose group ID is to be modified.
 

DESCRIPTION

To change the group ID of a file, you must have superuser privilege or your effective user ID must match the owner ID of the file. If you do not have superuser privilege you can change the group ID of a file only to your effective group ID or to the value of a group of which you are a member.

The group argument must be either a valid group name that already exists in the group database or a valid group ID.

For each file operand, the chgrp command performs actions equivalent to the chown() function called with the following arguments: The file operand is used as the path argument. The user ID of the file is used as the owner argument. The specified group ID is used as the group argument.

Unless the chgrp command is invoked by a process with appropriate privileges, the set-user-ID and set-group-ID bits of a file are cleared upon successful completion.
 

NOTES

If the chgrp command is invoked with the -R option and attempts but fails to change the group ID of a particular file in a specified file hierarchy, it continues to process the remaining files in the hierarchy. If the chgrp command cannot read or search a directory within a hierarchy, it continues to process the other parts of the hierarchy that are accessible.
 

EXIT STATUS

The following exit values are returned: Successful completion, all requested changes were made. An error occurred.
 

EXAMPLES

To change the group ownership of the file or directory named proposals to staff, enter: chgrp staff proposals

The group access permissions for proposals now apply to staff. See chmod for details.
 

ENVIRONMENT VARIABLES

The following environment variables affect the execution of chgrp: Provides a default value for the internationalization variables that are unset or null. If LANG is unset or null, the corresponding value from the default locale is used. If any of the internationalization variables contain an invalid setting, the utility behaves as if none of the variables had been defined. If set to a non-empty string value, overrides the values of all the other internationalization variables. Determines the locale for the interpretation of sequences of bytes of text data as characters (for example, single-byte as opposed to multibyte characters in arguments). Determines the locale for the format and contents of diagnostic messages written to standard error. Determines the location of message catalogues for the processing of LC_MESSAGES.
 

FILES

Contains group information.
 

SEE ALSO

Commands:  chmod(1), chown(1), groups(1)

Functions:  chmod(2), chown(2)

Files:  group(4)

Standards:  standards(5)


 

Index

NAME
SYNOPSIS
STANDARDS
OPTIONS
OPERANDS
DESCRIPTION
NOTES
EXIT STATUS
EXAMPLES
ENVIRONMENT VARIABLES
FILES
SEE ALSO

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Time: 02:42:59 GMT, October 02, 2010