tr(1) General Commands Manual tr(1)

tr - Translate or delete characters

tr [-c|--complement] [-d|--delete] [-s|--squeeze-repeats] [-t|--truncate-set1] [-h|--help] [-V|--version] [sets]

Translate or delete characters

use the complement of SET1
delete characters in SET1, do not translate
replace each sequence of a repeated character that is listed in the last specified SET, with a single occurrence of that character
first truncate SET1 to length of SET2
Print help
Print version
[sets]

v0.0.26

tr 0.0.26