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bash shell scripting

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  • bash shell scripting

    $! gives you the pid of the last run process. You often see it used to log the process id to a file like
    echo $! > programname.pid
    If you are piping one command to another then $! will give you the process id of the second command since it is the last. As in
    command1 | command2 &
    How do I get the process id of the first command?
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