Bash: run a hook after each command?

swingliner · 11-04-2011, 04:24 AM

Is it possible to run a post-command hook? I want to put what would end up in my .bash_history file into an sqlite database along with meta-info like process ID and timestamp, so that I can keep track of different shell histories. (I routinely have dozens of shells open).

serafean · 11-04-2011, 04:45 AM

Hi,
Every time bash finishes a command, it regenerates the prompt. You can modify this function by setting the PROMPT_COMMAND=my_command, and then you can define my_command to do what you want. Example :

Code:

function prompt {
if [[ $? -gt 0 ]];then
·       echo "worked"
else
·       echo "Didn't work"
fi
}

PROMPT_COMMAND=prompt