tr

Translates characters from the standard input to the standard output. There are two differences between /usr/bin/tr and this version:

• In SunOS 4.1, when translating from string1 to string2, if string2 is shorter than string1, string2 is padded out to the length of string1 by repeating string2's last character.

• This version does not require enclosing alphanumeric ranges inside square brackets.