vipw(8) - phpMan

VIPW(8)                             System Management Commands                            VIPW(8)



NAME
       vipw, vigr - edit the password, group, shadow-password or shadow-group file

SYNOPSIS
       vipw [options]

       vigr [options]

DESCRIPTION
       The vipw and vigr commands edits the files /etc/passwd and /etc/group, respectively. With
       the -s flag, they will edit the shadow versions of those files, /etc/shadow and
       /etc/gshadow, respectively. The programs will set the appropriate locks to prevent file
       corruption. When looking for an editor, the programs will first try the environment
       variable $VISUAL, then the environment variable $EDITOR, and finally the default editor,
       vi(1).

OPTIONS
       The options which apply to the vipw and vigr commands are:

       -g, --group
           Edit group database.

       -h, --help
           Display help message and exit.

       -p, --passwd
           Edit passwd database.

       -q, --quiet
           Quiet mode.

       -s, --shadow
           Edit shadow or gshadow database.

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.

           This feature (split group) permits to limit the length of lines in the group file.
           This is useful to make sure that lines for NIS groups are not larger than 1024
           characters.

           If you need to enforce such limit, you can use 25.

           Note: split groups may not be supported by all tools (even in the Shadow toolsuite.
           You should not use this variable unless you really need it.

FILES
       /etc/group
           Group account information.

       /etc/gshadow
           Secure group account information.

       /etc/passwd
           User account information.

       /etc/shadow
           Secure user account information.

SEE ALSO
       vi(1), group(5), gshadow(5) passwd(5), shadow(5).



System Management Commands                  12/06/2009                                    VIPW(8)

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