nixCraft

#1 (**permalink**) 29-12-2005, 10:27 PM

I would like to change password using perl script... any idea how to do it?

-Raj

nixcraft · #2 (**permalink**) 01-01-2006, 01:50 AM

You really don't need a perl script. All you need is following shell script and expect tool:

Code:

vi npasswd

Add following lines to it:

Code:

#!/bin/sh
# \
exec expect -f "$0" ${1+"$@"}
set password [lindex $argv 1]
spawn passwd [lindex $argv 0]
expect "assword:"
send "$password\r"
expect "assword:"
send "$password\r"
expect eof

To change password for user vivek:

Code:

npasswd vivek 123456

Where,
npasswd : script name
vivek : username
123456: Newpassword

Script must be run as a root user, it can be call from perl, php or any other lanauge. Download expect tool here: http://expect.nist.gov/

pmtsampath · #3 (**permalink**) 15-11-2007, 09:36 AM

Hi i tried to install expect, but it required Tcl..
From where i can download the Tcl..?

pmtsampath · #4 (**permalink**) 15-11-2007, 02:57 PM

Hi i download expect and Tcl and store it in the path /usr/local/src.
But while run ./configure file, it was unable to detect the Tcl file..
How to install the expect..?

monk · #5 (**permalink**) 18-11-2007, 08:35 AM

Use the Unix::PasswdFile module (cpan module), it provides an abstract interface to /etc/passwd format files. It automatically handles file locking, getting colons in the right places, and all the other niggling details.

Code to change password for monk user:

Code:

#!/usr/bin/perl 
use Unix::PasswdFile;

$pw = new Unix::PasswdFile "/etc/passwd";
$pw->passwd("monk", $pw->encpass("My-New-Password"));
$pw->commit();
undef $pw;

function passwd( USERNAME [,PASSWD] )
It can read or modify a user's password. Returns the encrypted password in either case. If you have a plaintext password, use the encpass method to encrypt it before passing it to this method. Refer to man page for more details

pmtsampath · #6 (**permalink**) 26-11-2007, 03:56 PM

Thank you..
I'd change the root password from perl script.

pmtsampath · #7 (**permalink**) 26-11-2007, 04:02 PM

Hi,
I want to change xml coding to html coding.
Is there any option to draw circle in html?

vikas027 · #8 (**permalink**) 09-06-2008, 04:06 PM

Quote:

Originally Posted by monk

Use the Unix::PasswdFile module (cpan module), it provides an abstract interface to /etc/passwd format files. It automatically handles file locking, getting colons in the right places, and all the other niggling details.

Code to change password for monk user:

Code:

#!/usr/bin/perl 
use Unix::PasswdFile;

$pw = new Unix::PasswdFile "/etc/passwd";
$pw->passwd("monk", $pw->encpass("My-New-Password"));
$pw->commit();
undef $pw;

function passwd( USERNAME [,PASSWD] )
It can read or modify a user's password. Returns the encrypted password in either case. If you have a plaintext password, use the encpass method to encrypt it before passing it to this method. Refer to man page for more details

Hi Monk,

Can you pls tell me how to run this script. I am completely nuts abt perl.

THanks,
VIKAS

nixcraft · #9 (**permalink**) 13-06-2008, 11:01 PM

Quote:

Originally Posted by vikas027

Hi Monk,

Can you pls tell me how to run this script. I am completely nuts abt perl.

THanks,
VIKAS

You need to have perl installed. You also need to have Unix::PasswdFile cpan module installed on Solaris UNIX. This can be done using package manager.

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Change root password using perl script?

Change root password using perl script?

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