Provided by: coreutils_8.5-1ubuntu6_i386 bug


       tr - translate or delete characters


       tr [OPTION]... SET1 [SET2]


       Translate,  squeeze,  and/or  delete  characters  from  standard input,
       writing to standard output.

       -c, -C, --complement
              use the complement of SET1

       -d, --delete
              delete characters in SET1, do not translate

       -s, --squeeze-repeats
              replace each input sequence of  a  repeated  character  that  is
              listed in SET1 with a single occurrence of that character

       -t, --truncate-set1
              first truncate SET1 to length of SET2

       --help display this help and exit

              output version information and exit

       SETs   are   specified   as  strings  of  characters.   Most  represent
       themselves.  Interpreted sequences are:

       \NNN   character with octal value NNN (1 to 3 octal digits)

       \\     backslash

       \a     audible BEL

       \b     backspace

       \f     form feed

       \n     new line

       \r     return

       \t     horizontal tab

       \v     vertical tab

              all characters from CHAR1 to CHAR2 in ascending order

              in SET2, copies of CHAR until length of SET1

              REPEAT copies of CHAR, REPEAT octal if starting with 0

              all letters and digits

              all letters

              all horizontal whitespace

              all control characters

              all digits

              all printable characters, not including space

              all lower case letters

              all printable characters, including space

              all punctuation characters

              all horizontal or vertical whitespace

              all upper case letters

              all hexadecimal digits

              all characters which are equivalent to CHAR

       Translation occurs if -d is not given and both SET1  and  SET2  appear.
       -t  may  be  used only when translating.  SET2 is extended to length of
       SET1 by repeating its last character as necessary.   Excess  characters
       of  SET2  are  ignored.  Only [:lower:] and [:upper:] are guaranteed to
       expand in ascending order; used in SET2  while  translating,  they  may
       only  be used in pairs to specify case conversion.  -s uses SET1 if not
       translating nor deleting; else squeezing uses  SET2  and  occurs  after
       translation or deletion.


       Written by Jim Meyering.


       Report tr bugs to
       GNU coreutils home page: <>
       General help using GNU software: <>
       Report tr translation bugs to <>


       Copyright  (C) 2010 Free Software Foundation, Inc.  License GPLv3+: GNU
       GPL version 3 or later <>.
       This is free software: you are free  to  change  and  redistribute  it.
       There is NO WARRANTY, to the extent permitted by law.


       The  full  documentation  for tr is maintained as a Texinfo manual.  If
       the info and tr programs are  properly  installed  at  your  site,  the

              info coreutils 'tr invocation'

       should give you access to the complete manual.