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pwck(8)
NAME
  pwck, grpck - Checks the password and group files for inconsistencies

SYNOPSIS
  pwck [file]

  grpck [file]

DESCRIPTION
  The pwck command scans the /etc/passwd file, or the named file, and writes
  to standard output any inconsistencies.  The scan checks the number of
  fields, login name, user ID, group ID, and existence of a login directory
  and optional program name.

  The grpck command scans the /etc/group file, or the named file, and writes
  to standard output any inconsistencies.  The scan checks the number of
  fields, group name, group ID, and whether all login names appear in the
  password file.  grpck writes to standard output any group entries that do
  not have login names.

EXAMPLES
  To verify the password information in the /etc/passwd file for consistency,
  enter:

       pwck

FILES
  /usr/sbin/pwck
	    Specifies the command path

  /usr/sbin/grpck
	    Specifies the command path

  /etc/passwd
	    Contains user information

  /etc/group
	    Contains group information

RELATED INFORMATION
  Commands:  adduser(8), groups(1), passwd(1), vipw(8)