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Suppose I am extracting a huge file or slowly building up a huge file. Is there a way to have ls -lh "on" much like tail -f, so that I can constantly see the size of the file grow until I decide to terminate it?

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up vote 10 down vote accepted

ls(1) doesn't have any feature built in to do that, but you can probably get what you want with the more generic watch(1) command.

watch ls -lh will run that ls command every two seconds (by default; see the manual page for details) and show the output nicely.

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while [ true ]; do clear; ls -lah /path/to/dir; sleep 30; done
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The watch(1) command already does this, don't reinvent the wheel. –  MikeyB Feb 3 '12 at 18:55
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