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password changing in shell scripting

Hi,

i am using ubuntu 12.04 i working on scripting i want know how to change set of user passwords in shell scripting .

Welcome to LQ!!!

Would like to mention that we would not write script for you. Let us know what you have prepared so far?

Did you have a look at passwd man page? If you want to set same password for a user let say testuser you can use:

Code:

echo "password" | passwd testuser --stdin

How to use it in script you have to figure out.

If you want to set random password then you might want to have a look at /dev/urandom + tr. The other tools like fold will depend on the number of characters you want in your password.

Quote:

Originally Posted by T3RM1NVT0R (Post 5362339)

Did you have a look at passwd man page?

just to clarify, open a terminal (Ctrl-Alt-T), type "man passwd".

Welcome to LQ. Please post what you have so far for your script.

You may use 'chpasswd' for bulk changing.

Can make scripts with autoexpect in some cases too.