sed

sed is a stream editor. It takes input from a file, processes it, and outputs to STDOUT:

Substitutions: sed -e ‘s/Andrew/Andy/’ -e ‘s/McDonough/Donut/’ file

Read somefile and substitute all occurrences of somexpession with a replacement cat somefile.file | sed s/someexpression/replacement/

Find all words ending in the letters de in the word list, remove the de and print to the screen. grep -ri “.*de$” /usr/share/dict/linux.words | sed s/..$//

Andrew McDonough is a consultant CTO and software developer, currently based between Berlin and London.

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