So I have a job for my OS class and one of the increased value options it to add, when listing the process ID and name of the commands I have running, the CPU time and the real usage time of the same commands. Thing is, I can only get them after they have finished, using the times() function and the information is supposed to appear while they are running. Is there any way to do this?
I am launching commands by forking the parent process and then running execlp("xterm","xterm","-hold", "-e", command, NULL)
on the child. As you can see, the -hold prevents the window from closing instantly, which, on the one hand, ables me to see the output of a date command, for example, but on the other hand makes the xterm hang until I close it with either kill() or directly on the xterm window.
All help is appreciated. Thank you. :)
Note: The OS is Linux (I'm using Ubuntu 11.04 but the code should work on all distros).