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
       (runes).  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     Complement string1: replace it with a lexicographically ordered list of all other characters.

       -d     Delete from input all characters in string1.

       -s     Squeeze repeated output characters that occur in string2 to single characters.

       In either string a noninitial sequence -x, where x is any character (possibly quoted), stands for a range
       of characters: a possibly empty sequence of codes running from the successor  of  the  previous  code  up
       through  the code for x.  The character followed by 1, 2 or 3 octal digits stands for the character whose
       16-bit value is given by those digits.  The character sequence followed by 1,  2,  3,  or  4  hexadecimal
       digits  stands  for  the  character whose 16-bit value is given by those digits.  A followed by any other
       character stands for that character.

EXAMPLES

       Replace all upper-case ASCII letters by lower-case.

              tr A-Z a-z <mixed >lower

       Create a list of all the words in one per line in where a word  is  taken  to  be  a  maximal  string  of
       alphabetics.  String2 is given as a quoted newline.

              tr -cs A-Za-z '
              ' <file1 >file2

SOURCE

       /src/cmd/tr.c

SEE ALSO

       sed(1)

                                                                                                      TR(1plan9)