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My favorite thing has been `| ruby -e "puts STDIN.to_a. ..."`, allows to run any kind of code on the standard input, much easier than remembering awk/sed various options and much more powerful.

edit: same thing can be done with Python/Perl

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Yes, easier if you know ruby.. sed/awk is good for munching strings in small scripts and it is also always installed on a unix system (AFAIK).

You'll find sed and awk in busybox, virtually always, even on minimal systems. Including embedded devices, routers, Android, etc.

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