1 2result=$(${SH} -c '(/bin/sleep 1)& sleep 0.1; ps -p $! -o comm=; kill $!') 3test "$result" = sleep || exit 1 4 5result=$(${SH} -c '{ trap "echo trapped" EXIT; (/usr/bin/true); } & wait') 6test "$result" = trapped || exit 1 7 8exit 0 9