PWCONV(8) Maintenance Commands and Procedures PWCONV(8)

NAME

pwconv - installs and updates /etc/shadow with information from
/etc/passwd

SYNOPSIS

pwconv

DESCRIPTION

The pwconv command creates and updates /etc/shadow with information
from /etc/passwd.


pwconv relies on a special value of 'x' in the password field of
/etc/passwd. This value of 'x' indicates that the password for the
user is already in /etc/shadow and should not be modified.


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 (for example, password and aging information)
that exist in an /etc/passwd entry will be moved to the
corresponding entry in /etc/shadow.


The pwconv command can only be used by the super-user.

FILES

/etc/opasswd


/etc/oshadow


/etc/passwd


/etc/shadow

SEE ALSO

passwd(1), passwd(5), attributes(7), passmgmt(8), usermod(8)

DIAGNOSTICS

pwconv exits with one of the following values:

0
SUCCESS.


1
Permission denied.


2
Invalid command syntax.


3
Unexpected failure. Conversion not done.


4
Unexpected failure. Password file(s) missing.


5
Password file(s) busy. Try again later.


6
Bad entry in /etc/shadow file.


March 9, 1993 PWCONV(8)