tr(1-ucb)               (BSD Compatibility Package)               tr(1-ucb)

NAME
     tr - translate characters

SYNOPSIS
     /usr/ucb/tr [-cds] [string1 [string2]]

DESCRIPTION
     tr copies the standard input to the standard output with substitution
     or deletion of selected characters. The arguments string1 and string2
     are considered sets of characters. Any input character found in
     string1 is mapped into the character in the corresponding position
     within string2. When string2 is short, it is padded to the length of
     string1 by duplicating its last character.

     In either string the notation:

          a-b

     denotes a range of characters from a to b in increasing ASCII order.
     The character \, followed by 1, 2 or 3 octal digits stands for the
     character whose ASCII code is given by those digits. As with the
     shell, the escape character \, followed by any other character,
     escapes any special meaning for that character.

OPTIONS
     Any combination of the options -c, -d, or -s may be used:

     -c   Complement the set of characters in string1 with respect to the
          universe of characters whose ASCII codes are 01 through 0377
          octal.

     -d   Delete all input characters in string1.

     -s   Squeeze all strings of repeated output characters that are in
          string2 to single characters.

EXAMPLE
     The following example creates a list of all the words in filename1 one
     per line in filename2, where a word is taken to be a maximal string of
     alphabetics. The second string is quoted to protect \ from the shell.
     012 is the ASCII code for NEWLINE.

          tr -cs A-Za-z '\012' <filename1 >filename2

NOTES
     Will not handle ASCII NUL in string1 or string2. tr always deletes NUL
     from input.

SEE ALSO
     ed(1), ascii(5).





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