HP-UX Reference (11i v1 05/09) - 1M System Administration Commands N-Z (vol 4)

p
pwck(1M) pwck(1M)
NAME
pwck, grpck - password/group file checkers
SYNOPSIS
/usr/sbin/pwck
[-s][-l][password [shadow]]
/usr/sbin/grpck
[file ]
DESCRIPTION
pwck scans fields in the password file 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(4) and is described in the Managing Systems and Workgroups
manual. The default
password file is
/etc/passwd .
If the ShadowPassword
bundle has been installed, and if the system has been converted to use shadow
passwords,
pwck also checks the shadow password file. The criteria for validation is in
shadow(4). 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 and group files. The Network Information Service data-
base 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
HP-UX 11i Version 1: September 2005 − 1 − Hewlett-Packard Company Section 1M−−705