Hi friends,

I need to create a bash script for reset a root password and user password for multiple servers and it doesnt have direct root access in cent os. so can u please help on this.

the process are like this for multiple servers

ssh sas@serverip
su -
passwd
new password
new password
password successfully updated
passwd sas
new password
new password
password successfully updated
exit.

As you've been asked MANY times previously, SPELL OUT YOUR WORDS, and STOP USING TEXT SPEAK....read the LQ Rules. And also, read the Question Guidelines Link in my posting signature. We will HELP you, but you, PERSONALLY, need to show some effort of your own. Post the script that you have written, what you've tried, and what message(s)/error(s) you're getting, and we will be happy to help.

Otherwise, we are NOT going to write a script for you. There are many thousands of bash-scripting you can find with a Google search...and since you've been here for four years now, you should know we're not going to write you a script.

Also, you indicate that this is a script you want to run on existing CentOS servers, so why are you posting in "Slackware - Installation" forum? No-one is going to take you seriously.

1 members found this post helpful.

Hi,

i have written below, and its direct root to change it, but i need to know logging as user(sas) and then need to go root user and change the both user & root password.

ganesh-1684@landing~>cat passwordreset.sh
for server in `cat servers.txt`; do
ssh $server -l sas 'passwd <<EOF
old_pass
new_pass
new_pass
EOF';
done
ganesh-1684@landing~>

Ok, so either use "su - root" or "sudo <command>". And this script is horribly insecure...changing the root password should NEVER be trivial. Anyone who can even FIND this script on your server, can then change the root passwords on ALL your servers, and do whatever they please. Or (worse), just SEE the password (since you're keeping it in clear text), log in as root, and lock EVERYONE out.