如何在已经打开的特定终端上启动Shell命令？

Question

I have a script ./runStart.sh that creates a new xterm and in this xterm launch the script run.log command. Then, to finish the process I launch a script ./runStop.sh that kills the xterm and do other stuff behind. The problem I have is that as I kill the process while running, there is no exit call, so the script command does not save the data in the actual file.

Do you know how I could launch a command in the second script ./runStop.sh that makes this exit call instead of the kill <pid> command ?

Answer 1

You can use the bash builtin trap to catch a signal (except KILL and STOP ) and do the required cleanup.

For example, here i am catching the pseudo signal EXIT that would cover any signal that would make the shell to exit:

xterm -e '/bin/bash' -c 'trap "echo ok >/tmp/foobar" EXIT; sleep 5'

sleep 5 is my main task and echo ok >/tmp/foobar is cleanup task upon exiting.

Alternately if are sure about the signal to be sent/received eg HUP , INT , you can trap those directly.