Wait for processes, even if not childs of current shell

wait 536; anywait 536; anywaitd 537; anywaitp 5562 5563 5564
Silent: anywait () { for pid in "$@"; do while kill -0 "$pid" >/dev/null 2>&1; do sleep 0.5; done; done } Prints dots: anywaitd () { for pid in "$@"; do while kill -0 "$pid" >/dev/null 2>&1; do sleep 0.5; echo -n '.'; done; done } Prints process ids: anywaitp () { for pid in "$@"; do while kill -0 "$pid" >/dev/null 2>&1; do sleep 0.5; echo -n $pid' '; done; echo; done } You cannot anywait for other users processes.
Sample Output
$ wait 536
-bash: wait: pid 536 is not a child of this shell

$ anywait 536
^C

$ anywaitd 537
...............................^C

$ anywaitp 5562 5563 5564
5562 5562 5562 5562 5562 5562 5562 5562 5562 5562
5563 5563 5563 5563 5563 5563 5563 5563
5564 5564 5564 5564 5564 5564 5564 5564

0
By: colemar
2014-10-22 06:31:47

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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