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pwconv.1m (2010 09)

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pwconv(1M) pwconv(1M)
NAME
pwconv - install, update or check the /etc/shadow file
SYNOPSIS
/usr/sbin/pwconv
[-t][-v]
DESCRIPTION
The
pwconv command installs or appends /etc/shadow
with information from /etc/passwd,or
checks for any discrepancies between the contents of the two files.
The
pwconv command without options does the following:
1. Creates the file
/etc/shadow if it does not exist; otherwise, it removes all entries for user-
names which are not present in
/etc/passwd
.
2. For each entry in
/etc/passwd, move the encrypted password and aging information to
/etc/shadow. Entries in /etc/passwd which have no encrypted password or aging infor-
mation will not overwrite information in /etc/shadow.
3. Writes an "x" in each password field of the
/etc/passwd file, to indicate that the password
and aging information reside in the
/etc/shadow
file.
The
pwconv command relies on a special value of "x" in the password field of
/etc/passwd. A value
different from "x" will prompt
pwconv to move the password and aging information into the correspond-
ing fields of /etc/shadow, and then replace the password field in /etc/passwd with an "x".
If no aging information exists in
/etc/passwd for a user, none will be added to /etc/shadow. How-
ever, the last change field, which indicates when the password was last modified, will always be updated
(default is current date). See shadow (4).
Options
The following options are recognized:
-v Verbose output.
-t Test mode. pwconv prints error information but does not modify /etc/passwd
nor
/etc/shadow.
Notes
The
pwconv command can only be used by the superuser.
HP recommends running
pwck before pwconv. See pwck(1M).
A system which has been converted to a trusted system has no
/etc/shadow file. In this case,
pwconv
can be used with no options to update the secure password facility to reflect any changes made in the
/etc/passwd file.
RETURN VALUE
pwconv exits with one of the following values:
0 Successful completion.
1 Conversion error occurred.
WARNINGS
HP-UX 11i Version 3 is the last release to support trusted systems functionality.
FILES
/etc/passwd system password file
/etc/shadow shadow password file
/tcb/files/auth/*/* secure password facility
SEE ALSO
pwck(1M), pwunconv(1M), passwd(4), shadow(4).
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1

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