Script for killing several processes and then launching them again
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I think it's suitable if the result of the ps is a single line, but in my case, I get 3 lines, so I don't know how to make it run all on 3 processes.
Also, I need to run afterwords the following command:
Can anyone help me with the script?
If by "help", you mean "assist you because you've got a problem", then sure.
If by "help", you mean "can someone write the script for me?", then no...
As with all requests like this, post what you've written so far, and where you're getting stuck, and we'll be happy to help you. Otherwise, you can find many good bash scripting tutorials on Google, to help get you started. HINT: look at the "killall" command, and/or the "while" directive in bash scripting, to kill multiple PID's.
In addition to what suggested by TB0ne, you can take a look at pkill. The line of code you found is totally superfluous, since you can force ps to print the needed information using the correct options (no need to grep, extract and so on). Moreover pkill joins the functionality of ps and kill together. A simple command can do the job. See man pkill for details.