tr

	Name	Last modified	Size
	Parent Directory		-

single-byte, no unicode!

rot-13 "encryption"

  tr 'a-z' 'n-za-m'


strip other than TAB, LF, CR and printable chars

  tr -cd '\11\12\15\40-\176' < file-with-binary-chars > clean-file


replace commas with new lines

  tr , \\n


strip repetitive white space

  tr -s ' \t'

or new lines

  tr -s \\n