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Full Discussion: Reading etc/passwd file
Top Forums UNIX for Dummies Questions & Answers Reading etc/passwd file Post 302880412 by McMeatface on Thursday 19th of December 2013 12:04:44 PM
Old 12-19-2013
I think it is v20 or above, but the information you have provided is very good. Thank you for that and I will definitely make a note of it.

Also, is having a negative UID okay or should that be changed to a high positive integer for the nobody ID?
 

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LEARN ABOUT SUSE

pwconv

pwconv(8)						      System Manager's Manual							 pwconv(8)

NAME

       pwconv - convert to shadow account

SYNOPSIS

       pwconv [-P path]

DESCRIPTION

       pwconv  installs  and updates /etc/shadow with information from /etc/passwd. It relies on the special password 'x' in the password field of
       the account. This value indicates that the password for the user is already in /etc/shadow and should not be modified.

       If /etc/shadow does not exist, pwconv creates this file, moves the user password to it and creates default aging informations with the help
       of  the	values	of PASS_MIN_DAYS, PASS_MAX_DAYS and PASS_WARN_AGE from /etc/login.defs. The password field in /etc/passwd is replaced with
       the special character 'x'.

       If the /etc/shadow does exist, entries that are in the /etc/passwd file and not in the /etc/shadow file are added to the /etc/shadow  file.
       Accounts,  which  only  exist  in /etc/passwd, are added to /etc/shadow. Entries that are in /etc/shadow and not in /etc/passwd are removed
       from /etc/shadow. All passwords from /etc/passwd are moved to /etc/shadow and replaced with the special character 'x'.

       pwconv can be used for initial conversion and for updates later.

OPTIONS

       -P, --path path
	      The passwd and shadow files are located below the specified directory  path.  pwconv  will  use  this  files,  not  /etc/passwd  and
	      /etc/shadow.

FILES

       passwd - user account information
       shadow - shadow user account information

SEE ALSO

       passwd(1), login.defs(5), passwd(5), shadow(5), pwck(8), pwunconv(8)

AUTHOR

       Thorsten Kukuk <kukuk@suse.de>

pwdutils							   January 2004 							 pwconv(8)
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