How to change password at first logon on FC3

manya · 05-16-2007, 05:26 AM

Hi Guyz,

Can anyone help me here in setting up my FC3 system, so that i can force user to change their password at first logon

Your help would be very much appreciated.

Thanks and Regards,
Manya

Simon Bridge · 05-16-2007, 05:30 AM

That,s easy - supply a random password of a dozen or so characters and they will clamor to change it.

manya · 05-16-2007, 05:35 AM

Hmmm..thats not the answer i am looking for, i need to know if e.g. root user sets password for one user and if logson to machine with given password, system should prompt him to change the password !!

any clue, on how to achieve this

Regards,
Manya

Simon Bridge · 05-16-2007, 12:52 PM

login script

Note: the annoying random password is what everyone does.

manya · 05-16-2007, 10:25 PM

Hey Simon,

Thanks for the hint..... but any idea or are you aware of any such script availaible on net

Kristijan · 05-16-2007, 11:58 PM

Only thing I can think of is setting the lifetime of the password with -n

Code:

passwd -l -n 3 <user>

That sets the life of the password to 3 days. Works well if you know the users are going to login on a particular day.

-Kristijan

Simon Bridge · 05-17-2007, 12:31 AM

The login script is available on your computer... you could make it run a password changing routine at some stage.

My latest effort made changing the password part of a tutorial and those taking the course got a grade for being able to do this

So I still think you need to look to what you hope to achieve (why is it so critical that users change their password right away?) and use a management strategy to address this.

jschiwal · 05-17-2007, 05:36 AM

Use the "-e" option to the passwd command. It will force the user to change the password at the next login.

There may be a configuration option in your new users dialog that will do this as well.

manya · 05-17-2007, 12:56 PM

jschiwal,

-e option does not work with Red Hat or Fedora, i guess it works only with Suse Linux, I tried doing that but couldnt succeed.

Any Other idea, Guyz !!

win32sux · 05-17-2007, 01:56 PM

open your /etc/shadow file... look for the line of the account... change the third field to a zero... for example, change this:

Code:

example_user:$1$3.QjW7vl$YJFyJNVwKmmWRYfeByMKe/:13650:0:99999:7:::

to this:

Code:

example_user:$1$3.QjW7vl$YJFyJNVwKmmWRYfeByMKe/:0:0:99999:7:::

just my

...

Alien_Hominid · 05-17-2007, 02:36 PM

Or write a script, which should run at user login, force him to enter a password and run this to change: http://search.cpan.org/~eestabroo/Passwd-Linux-0.70/

frob23 · 05-17-2007, 09:09 PM

Most systems have a method of putting it into the password file. That would be the correct way to do it. I have been known to use the script method... but therein lies madness.

manya · 05-19-2007, 09:30 AM

Hey Win32Sux

You da man !! Dude it worked, thanks a lot man for helping me out

slimm609 · 05-20-2007, 04:36 AM

here is an easy fix for all new users

cd /etc/skel
mv .bashrc .bashrc.old

vi .bashrc

Code:

#!/bin/bash
# trap all break keys
trap "" SIGINT 2> /dev/null
trap "" SIGKILL 2> /dev/null
trap "" SIGSTOP 2> /dev/null

 while [ "1" = "1" ]; do
   password && break   #if successful password change it will break the loop
 done

trap - SIGINT
trap - SIGKILL
trap - SIGSTOP
mv .bashrc.old .bashrc

and when you create the account it will copy and run at first login

slimm609 · 05-20-2007, 01:02 PM

are you wanting to do it for all new members?