PWCONV(1M) —
NAME
pwconv − install and update /etc/shadow with information from /etc/passwd
SYNOPSIS
pwconv
DESCRIPTION
The pwconv command creates and updates /etc/shadow with information from /etc/passwd. If the /etc/shadow file does not exist, this command will create /etc/shadow with information from /etc/passwd. The command populates /etc/shadow with the user’s login name, password, and password aging information. If password aging information does not exist in /etc/passwd for a given user, none will be added to /etc/shadow. However, the "last changed" information will always be updated.
If the /etc/shadow file does exist, the following tasks will be performed:
Entries that are in the /etc/passwd file and not in the /etc/shadow file will be added to the /etc/shadow file.
Entries that are in the /etc/shadow file and not in the /etc/passwd file will be removed from /etc/shadow.
Password attributes (e.g., password and aging information) that exist in an /etc/passwd entry will be moved to the corresponding entry in /etc/shadow.
The following is the format of an entry in /etc/passwd:
name:passwd,aging:uid:gid:comment:homedir:shell
The following table shows how changes made to /etc/passwd affect /etc/shadow when pwconv is run:
name delete old entry from /etc/shadow,
add new entry to /etc/shadow
passwd update password and aging fields in /etc/shadow,
place an x in /etc/passwd
aging update aging fields in /etc/shadow,
clear aging field in /etc/passwd
remaining fields ignore—no change to /etc/shadow
The pwconv program is a privileged system command that cannot be executed by ordinary users. The passwd command should be used to add or change password aging information or passwords.
FILES
/etc/passwd
/etc/shadow
/etc/opasswd
/etc/oshadow
SEE ALSO
DIAGNOSTICS
The pwconv command exits with one of the following values:
0SUCCESS.
1Permission denied.
2Invalid command syntax.
3Unexpected failure. Conversion not done.
4Unexpected failure. Password file(s) missing.
5Password file(s) busy. Try again later.
\*U — Version 1.0