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Full Discussion: questions
Top Forums UNIX for Dummies Questions & Answers questions Post 39411 by Neo on Sunday 17th of August 2003 09:28:29 PM
Old 08-17-2003
Re: questions

Quote:
Originally posted by tamemi
Dear Guys ,

I have some Questions , i need to have answeres for .

1. now if i took a back up for /etc/passwd and /etc/shadow , like simple copy .. and Install a new system , and paste those two files to the new system ... are the passwords and user info. going to work ?? is it posibble ?

Mou
No, it will not generally work. Each user entry in the password file has a directory and the directories will not (likely) exist nor will the permissions match the user and group IDs, etc. (major problem) Nor will the 'dot files' exist that users need (minor problem, but can be annoying to users).

Don't forget, the login shells must match, etc. (could be major problem)
 

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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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