find . -name '*.osc' -or -name '*.img' -type f -size +3000 -print -exec bzip2 '{}' \;

is a personal favorite, along those lines, with ample opportunities for customization. (If the above command line wraps, it's all supposed to be on one line)

Phil Jeffrey
Princeton

On 2/9/11 2:46 PM, David Schuller wrote:

/bin/ls -lR | sort -nk5 | tail -40
will list the largest files in the directory tree. Those are probably
the ones you need to compress.

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