If you need to work on cluster, is nice to have syncronized terminals to send the same commands in parallel.

Is it also doungerous, so do some test before sending a bunch of vi commands!

On Unix, a cheap and fast solution is Kde “konsole” which has such option.

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Use the sed -i command

sed -i.BAK 's|foo|bar|g' files # -i does in-place replacement
perl -pi.bak -e 's|foo|bar|g' files                # or
perl -pi.bak -e 's|foo|bar|g' `find /pathname -name "filespec"`

Perl is the preferred way, but on some production system you must use the old good sed. For some tips on sed take a look to its faq. Another very powerful command is xargs. Xargs is a rapid  way to process files containing spaces, using  a  combo with find:

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