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Full Discussion: Shadow file password policy
Operating Systems Linux Red Hat Shadow file password policy Post 302458539 by pinga123 on Friday 1st of October 2010 04:49:14 AM
Old 10-01-2010
Quote:
If the password field contains some string that is not a valid result of crypt(3), for instance ! or *, the user will not be able to use a
unix password to log in (but the user may log in the system by other means).
How would a locked user can able to login using other means?
are you referring to login by super user and issue su <locked username>?

---------- Post updated at 03:49 AM ---------- Previous update was at 03:30 AM ----------

P.S:
I would also like to know the GID range of my distribution .

I can find the UID range by examining UID of nobody user but how would i find the same for GID.
 

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pwconv(1M)						  System Administration Commands						pwconv(1M)

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 correspond- ing entry in /etc/shadow. The pwconv command can only be used by the super-user. FILES
/etc/opasswd /etc/oshadow /etc/passwd /etc/shadow ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
passwd(1), passmgmt(1M), usermod(1M), passwd(4), attributes(5) 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. SunOS 5.11 9 Mar 1993 pwconv(1M)
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