HP-UX Reference (11i v2 07/12) - 1M System Administration Commands N-Z (vol 4)

p
pwck(1M) pwck(1M)
NAME
pwck, grpck - password/group file checkers
SYNOPSIS
/usr/sbin/pwck
[-l][password [shadow]]
/usr/sbin/pwck
[-s][-l][password]
/usr/sbin/grpck
[file ]
DESCRIPTION
pwck scans fields in the password and shadow files and reports any inconsistencies to standard error. The
checks include validation of the number of fields, login name, user ID, group ID, and whether the login
directory and optional program exist. In addition, if the root entry shows a program, it can only be one of:
/sbin/sh, /usr/bin/csh , /usr/bin/ksh ,or/usr/bin/sh
. The criteria for validation is in
passwd and shadow, and is described in the
Managing Systems and Workgroups manual. The
default password file is
/etc/passwd . The default shadow file is
/etc/shadow . For additional
verification, use
pwconv, to check consistency between entries in the password and shadow files.
grpck verifies all entries in the group file and reports any inconsistencies to standard error. This
verification includes a check of the number of fields, group name, group ID, and whether all login names
appear in the password file. The default group file is /etc/group .
Options
pwck recognizes the following options:
-s Check inconsistencies with the Protected Password database. It calls
authck -p.
-l Check encrypted password lengths that are greater than 8 characters. If NIS+ is running in
Trusted mode, password lengths must not be longer than 8 characters.
DIAGNOSTICS
Group entries in /etc/group with no login names are flagged.
WARNINGS
Successful password file validation is not sufficient for proper system operation. To help maintain con-
sistency with other system databases, editing of the password file with vipw is discouraged. HP recom-
mends that you use sam, useradd, usermod, userdel, chfn, chsh or passwd
to edit
/etc/passwd .
DEPENDENCIES
NFS
pwck and grpck check only the local password, shadow and group files. The Network Information Ser-
vice database is not checked.
AUTHOR
pwck was developed by AT&T and HP.
FILES
/etc/group
/etc/passwd
/etc/shadow
SEE ALSO
authck(1M), pwconv(1M), vipw(1M), group(4), passwd(4), shadow(4).
STANDARDS CONFORMANCE
pwck: SVID2, SVID3
grpck: SVID2, SVID3
192 Hewlett-Packard Company − 1 − HP-UX 11i Version 2: December 2007 Update