1*f44ac8ccSJilles TjoelkerT=`mktemp -d ${TMPDIR:-/tmp}/sh-test.XXXXXXXX` 2*f44ac8ccSJilles Tjoelkertrap 'rm -rf "$T"' 0 3*f44ac8ccSJilles Tjoelkercd "$T" || exit 3 4*f44ac8ccSJilles Tjoelkermkfifo fifo1 || exit 3 5*f44ac8ccSJilles Tjoelkerset -T 6*f44ac8ccSJilles Tjoelkertrap "for i in 1 2 3 4; do sleep 1 & done" USR1 7*f44ac8ccSJilles Tjoelkersleep 1 & 8*f44ac8ccSJilles Tjoelker{ kill -USR1 "$$"; echo .; } >fifo1 & 9*f44ac8ccSJilles Tjoelker(read dummy <fifo1) 10