GNU sed

Stands for stream editor, it is a language for interfacing with text streams.

Quick pointers

• the tool will interact with the stream per line

• ; to denote end of expression

• -E, --regexp-extended to use PCRE

• s is one of the most common and extensive commands for it

printf "Hello\nThere" | sed -E -e 's/[aeiou]//g; s/[l]//g'

H
Thr