Shell Scripting.... How to start a same script in 3 different logins?

Shell Programming and Scripting
1

Hi,

I�ve a shell script. If I trigger the script it takes one day to complete the execution.

I�ve to start the same script in 3 different logins of Unix machine simultaneously. Do you have any idea how can I make it? Please suggest.

Thank you..

2

At the start of the script:

while [ -f /tmp/lockfile ] ; do true ; done

Either as root, or as a user configured in sudo to run this script as these users:

touch /tmp/lockfile
for USERNAME in user1 user2 user3
do
        sudo -u "$USERNAME" nohup /path/to/script.sh &
done

disown # Needed in bash/ksh, maybe not other shells

sleep 1

rm /tmp/lockfile # Let all three scripts start running simultaneously
3

Hi,

Thanks a lot for the reply...

But it did not workout... I don't know what went wrong but the script did not get executed.

Please suggest if there are any other idea...

---------- Post updated at 02:24 PM ---------- Previous update was at 01:13 PM ----------

Hi,

One more challenge is that, I am supposed to run a same script 3 times simultaneously but with 3 different command line inputs.

Please advise.

Thank you in Advance...

---------- Post updated at 02:25 PM ---------- Previous update was at 02:24 PM ----------

Hi,

One more challenge is that, I am supposed to run a same script 3 times simultaneously but with 3 different command line inputs.

Please advise.

Thank you in Advance...

4

You agreed not to bump posts when you registered. We are not 'on call'. If you don't get an answer immediately, wait!

Doing it with 3 different sets of commandline option is a trivial change to my code. Remove the loop and just do 'sudo' 3 times.

In what way did it "not work"? Did you set up sudo properly first as mentioned?