On Wed, Dec 24, 2014 at 02:09, Philippe Meunier wrote: > #!/bin/ksh -ex
You tell ksh to exit on error. > while true; do ps -lww | egrep startxBOGUS | egrep --line-buffered -v > egrep; sleep 1; done & You run a command (egrep) that exits with an error.