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    Command:

    groupmod

    
    
    

    SYNOPSIS

           groupmod [options] GROUP
    
    
    

    DESCRIPTION

           The groupmod command modifies the definition of the specified GROUP by
           modifying the appropriate entry in the group database.
    
    
    

    OPTIONS

           The options which apply to the groupmod command are:
    
           -g, --gid GID
               The group ID of the given GROUP will be changed to GID.
    
               The value of GID must be a non-negative decimal integer. This value
               must be unique, unless the -o option is used. Values between 0 and
               999 are typically reserved for system groups.
    
               Any files that have the old group ID and must continue to belong to
               GROUP, must have their group ID changed manually.
    
           -h, --help
               Display help message and exit.
    
           -n, --new-name NEW_GROUP
               The name of the group will be changed from GROUP to NEW_GROUP name.
    
           -o, --non-unique
               When used with the -g option, allow to change the group GID to a
               non-unique value.
    
           -p, --password PASSWORD
               The encrypted password, as returned by crypt(3).
    
               Note: This option is not recommended because the password (or
               encrypted password) will be visible by users listing the processes.
    
               You should make sure the password respects the system?s password
               policy.
    
    
    

    CONFIGURATION

           The following configuration variables in /etc/login.defs change the
           behavior of this tool:
    
           MAX_MEMBERS_PER_GROUP (number)
               Maximum members per group entry. When the maximum is reached, a new
               group entry (line) is started in /etc/group (with the same name,
               same password, and same GID).
    
               The default value is 0, meaning that there are no limits in the
               number of members in a group.
    
           /etc/gshadow
               Secure group account information.
    
    
    

    EXIT VALUES

           The groupmod command exits with the following values:
    
           0
               success
    
           2
               invalid command syntax
    
           3
               invalid argument to option
    
           4
               specified group doesn?t exist
    
           6
               specified group doesn?t exist
    
           9
               group name already in use
    
           10
               can?t update group file
    
    
    

    SEE ALSO

           chfn(1), chsh(1), passwd(1), gpasswd(8), groupadd(8), groupdel(8),
           useradd(8), userdel(8), usermod(8).
    
    
    

    System Management Commands 07/24/2009 GROUPMOD(8)

    
    
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