tr

Translate or delete characters

tr translates character by character. tr 'a-z' 'A-Z' uppercases everything. tr -d '\n' removes newlines. tr ',' '\t' converts CSV commas to tabs.

Example

$ echo 'hello world' | tr 'a-z' 'A-Z'
HELLO WORLD

Tip: Type it yourself in the terminal below - reading is not the same as doing.