linux man page for vigr

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.

ENVIRONMENT
       VISUAL
	   Editor to be used.

       EDITOR
	   Editor to be used if VISUAL is not set.

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					    06/24/2011								   VIPW(8)