redhat man page for vigr

VIPW(8) 						    BSD System Manager's Manual 						   VIPW(8)

NAME
     vipw, vigr -- edit the password or group files

SYNOPSIS
     vipw [-V] [--version]
     vigr [-V] [--version]

DESCRIPTION
     Vipw edits the password file after setting the appropriate locks, and does any necessary processing after the password file is unlocked.  If
     the password file is already locked for editing by another user, vipw will ask you to try again later. The default editor for vipw is vi(1).
     Vigr edits the group file in the same manner as vipw.

ENVIRONMENT
     If the following environment variable exists it will be utilized by vipw:

     EDITOR  The editor specified by the string EDITOR will be invoked instead of the default editor vi(1).

SEE ALSO
     passwd(1), vi(1), passwd(5)

HISTORY
     The vipw command appeared in 4.0BSD.
     The vigr command appeared in Util-Linux 2.6.

Util-Linux 2.6							    7 July 1996 						    Util-Linux 2.6