teip

Mask input to help commands process only selected parts

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Masking tape to help commands "do one thing well"

teip

Replace only the second field in a CSV$ cat data.csv | teip -f 2 -d ',' sed 's/old/new/'

Uppercase only matched regex groups$ echo 'hello world' | teip -g 'world' tr '[:lower:]' '[:upper:]'

Process only specific lines matching a pattern$ cat log.txt | teip -l 'ERROR' sed 's/ERROR/FIXED/'