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Change Password In A Shell Script

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Join Date: Sep 2006

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Re: Change Password In A Shell Script (with perl)

#11

Sep 11th, 2006

Hi. This is what I've put together so far. Can somebody tell me what I am doing wrong? I've searched the web and read the manuals but I just can't see how to get the communication with passwd to go directly through the terminal. I think I need to make the newly opened tty the controling tty but apparently don't know how.

I am working on AIX 5.2 and am not allowed to install IO:

ty or expect. So I need to roll my own.

Thank you very much for any pointers.

Attached Files

ttypasswd.pl.txt (1.5 KB, 186 views)

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Join Date: Sep 2006

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Re: Change Password In A Shell Script

#12

Sep 13th, 2006

Hi. It works now. The attached script works on SYS V type terminals and was tested on AIX 5.3. I will eventually get it working on Sun and Linux and will need to work out the Berkly style TTYs which involves a bit of code similar to:

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found: {
  for $bank ('p'..'z') {
    for $unit (('0'..'9'),('a'..'f')) {
      # +> : access in read/write mode
      open(PTY, "+>/dev/pty$bank$unit") || next;
      $s = select(PTY); $| = 1; select($s);
      open(TTY, "+>/dev/tty$bank$unit") || next;
      $s = select(TTY); $| = 1; select($s);
      last found;
      }
    }
  die "$0: Cannot find a free pty\n";
  }
found: {
  for $bank ('p'..'z') {
    for $unit (('0'..'9'),('a'..'f')) {
      # +> : access in read/write mode
      open(PTY, "+>/dev/pty$bank$unit") || next;
      $s = select(PTY); $| = 1; select($s);
      open(TTY, "+>/dev/tty$bank$unit") || next;
      $s = select(TTY); $| = 1; select($s);
      last found;
      }
    }
  die "$0: Cannot find a free pty\n";
  }

Let me know if anybody cares.

Attached Files

ttypasswd.pl.txt (1.7 KB, 198 views)

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Join Date: Oct 2006

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Re: Change Password In A Shell Script

#13

Oct 27th, 2006

I am interested if you ever get the Berkly style working, I would like to see it.

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Join Date: Apr 2006

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Re: Change Password In A Shell Script

#14

Nov 6th, 2006

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Originally Posted by cwb

I am interested if you ever get the Berkly style working, I would like to see it.

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Hi Amit,

Im looking for the script which you have for changing password on multiple servers. Would you mind sending them to me at.

Thanks and regards,
VinodKumar

Hi folks !!!!

First of all i am sorry for not replying to your posts.

Please let me know if you still require the script and i will post it in the thread.

Thanks,
Amit

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Re: Change Password In A Shell Script

#15

Dec 6th, 2006

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Originally Posted by kamitsin

Hi folks !!!!

First of all i am sorry for not replying to your posts.

Please let me know if you still require the script and i will post it in the thread.

Thanks,
Amit

If you could post the script I would very much appreciate it

Shelby

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Join Date: May 2007

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Re: Change Password In A Shell Script

#16

May 5th, 2007

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Originally Posted by kamitsin

i am using a shell script which changes the password of all the servers in the network and also of the host server (as per your requirement) but it uses except.

Earlier i had a perl script to change the password.

If you want i can give you both the scripts and you can modify them as per your requirement.

Amit

Hello Amit,
I was looking out for such script. I have to change user password for several servers.Would you mind sending me both the scripts at neha.ao@gmail.com ? It would be a great help.

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Re: Change Password In A Shell Script

#17

Oct 15th, 2007

Hello AMIT,

I almost need the same script. What I have is a root password which needs to be same on all servers. So these would be the requirements
> Script will have the root password
> The script will change the existing password and will insert the one which I have give
> Later it will ask me to type it from the keyboard to verify it
Do u have such kind off script..It would be great if you can please share it
Sri

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Originally Posted by kamitsin

i am using a shell script which changes the password of all the servers in the network and also of the host server (as per your requirement) but it uses except.

Earlier i had a perl script to change the password.

If you want i can give you both the scripts and you can modify them as per your requirement.

Amit

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Re: Change Password In A Shell Script

#18

Jan 29th, 2008

Amit,
First, THANK YOU for posting the script.

I get the following error when attempting to run this on a SUN box.

Can't open a pseudo-terminal. No such file or directory at ttypasswd.pl line 26.

I'm hoping to change the root password across many servers via a script. This script appears to change the password for the initiating user.

On my target servers, I'll need to su - to the root account since we can't login directly as root.

I have a file that contains that the hostnames for all my target servers and I would like the script to parse this file.

Thank you in advance for any assistance you can provide.
Chris

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Re: Change Password In A Shell Script

#19

Apr 22nd, 2008

hello Amit,

I also need change user password across multiple servers, could you send both of your scripts to bjgyking@163.com.
Your help will be highly apprieciated!!!