Is it possible to follow a command (run repeatedly)? as one would follow a file using tail -f? I have a script which produces a file 'Detail.out'. I know that the script is completed whenever the file contains a certain number of lines (roughly 21025). So I find myself sitting at the command prompt running: [me@somewhere myDir]$ wc -l */Detail.out 21025 A/Detail.out 21025 B/Detail.out 21025 C/Detail.out 12995 D/Detail.out 10652 E/Detail.out 3481 F/Detail.out 21027 G/Detail.out 21025 H/Detail.out 21025 I/Detail.out ... ... I've used `tail -f` to watch a specific file, but I'd like to follow the output of the `wc -l */Detail.out` command shown above. **Is this possible?** I'm currently using `tcsh` in Ubuntu 11.04 if that matters.

Try the `watch` command, although I suspect just about everyone has written their own version at one time or another. (The cheapie version is `while :; do clear; "$@"; sleep 5; done`.)