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TR(1)									 TR(1)

NAME
       tr - translate characters

SYNOPSIS
       tr [ -cds ] [ string1 [ string2 ] ]

DESCRIPTION
       Tr  copies  the standard input to the standard output with substitution
       or deletion of selected characters.  Input characters found in  string1
       are  mapped into the corresponding characters of string2.  When string2
       is short it is padded to the length of string1 by duplicating its  last
       character.   Any	 combination  of  the  options	-cds  may  be used: -c
       complements the set of  characters  in  string1	with  respect  to  the
       universe	 of characters whose ASCII codes are 01 through 0377 octal; -d
       deletes all input characters in string1; -s  squeezes  all  strings  of
       repeated output characters that are in string2 to single characters.

       In either string the notation a-b means 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.  A `\' followed by any other character  stands  for  that
       character.

       The  following  example	creates a list of all the words in `file1' one
       per line in `file2', 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´ <file1 >file2

SEE ALSO
       ed(1), ascii(7), expand(1)

BUGS
       Won't handle ASCII NUL in string1 or string2; always deletes  NUL  from
       input.

7th Edition			April 29, 1985				 TR(1)

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