What do you think?
Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?
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while pgrep wget > /dev/null 2>&1 || sudo shutdown -P now; do sleep 1m; donecould be expanded to do something every time the process is not-running (e.g. re-spawn/keep-alive)while pgrep gcalctool > /dev/null 2>&1 || gcalctool ; do sleep 0.1s; doneand, just in case one wants to use this for a single catch of a program stopping (e.g. notify when this process finishes this time) a break could be inserted to stop the loopingwhile pgrep wget > /dev/null 2>&1 || { zenity --info --text="wget is finished"; break; }; do sleep 1m; done^example assumes zenity but one could also use notify-send, mail, whatever...