Sometimes I need to build a small script to delete a huge set of tables of a schema.

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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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Hi dear spammers, I am an announce.

I love you so much I have decided to auto delete spam comments not already published.

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I am very happy to publish a first look of my trip to Ravenna and Ferrara.

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Hi dear spammers!

I have just finished tuning the latest version of my anti spam-blogging-software, and all the spam have been removed. I am glad to see you loosing your time tring to get some poor bucks from your bogous activity. I hope do you click on my google adverties sometimes, as true friends of mine?

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