I've added a counter (of successful commands in a row) to my bashrc. I've seen it as high as 120. function promptCommand() { LAST_STATUS=$? # Set title of window to dir, then add new line to prompt. PS1='\[\e]0;\w\a\]\n' if [ $LAST_STATUS -eq 0 ]; then ((successes++)) PS1+='\[\033[1;32m\][$successes]' else successes=0 PS1+='\[\033[1;31m\][0 $LAST_STATUS]' fi PS1+='\[\033[0;32m\] ' PS1+='\w $(date +%H:%M) \$ \[\033[0m…
Man, I hope you don't use grep very often (by default it uses exit code 1 when it doesn't find anything).
echo foo | grep bar | cat
is successful. Of course, this works for any command.