[Gllug] show non-zero exit code in bash
Dean Wilson
dwilson at unixdaemon.net
Wed Dec 28 19:26:46 UTC 2005
On Wed, Dec 28, 2005 at 06:21:04PM +0000, Tethys wrote:
> show_exit_code()
> {
> retval=$?
> cmdnum="$(history 1 | sed 's/\(^[0-9 ]*\).*/\1/')"
> if [ $retval -ne 0 -a "$cmdnum" != "$lastcmdnum" ]
> then
> lastcmdnum="$cmdnum"
> echo "Exit code: $retval"
> fi
> }
show_exit_code() {
retval=$?
if [ $retval -ne 0 -a "$HISTCMD" != "$lastcmdnum" ];then
lastcmdnum="$HISTCMD"
echo " -- exit code: $retval"
fi
}
I've tweaked it a bit (and reformatted it to suit my .bash_profile) and
by using $HISTCMD I can drop the two external commands
> This also handles the corner cases:
> - Successive commands with non-zero exit codes
> - "Null commands", i.e., pressing return at the shell prompt
Which is what my initial version failed to deal with.
A pint is yours to claim Mr Tethys!
Dean
--
Dean Wilson http://www.unixdaemon.net
Profanity is the one language all programmers understand
--- Anon
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