exitstat

来自「linux下bash的源码」· 代码 · 共 23 行

# Contributed by Noah Friedman and Roland McGrath.

# To be run by the PROMPT_COMMAND variable, so that one can see what
# the exit status of processes are.

function check_exit_status ()
{
 local status="$?"
 local signal=""

    if [ ${status} -ne 0 -a ${status} != 128 ]; then
       # If process exited by a signal, determine name of signal.
       if [ ${status} -gt 128 ]; then
          signal="$(builtin kill -l $[${status} - 128] 2>/dev/null)"
	  if [ "$signal" ]; then signal="($signal)"; fi
       fi
       echo "[Exit ${status} ${signal}]" 1>&2
    fi
    return 0
}

PROMPT_COMMAND=check_exit_status