TR(1)                           User Commands                          TR(1)

NAME         top

       tr - translate or delete characters

SYNOPSIS         top

       tr [OPTION]... SET1 [SET2]

DESCRIPTION         top

       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 sequence of a repeated character that is listed
              in the last specified SET, with a single occurrence of that

       -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 the last
       specified SET, and occurs after translation or deletion.

AUTHOR         top

       Written by Jim Meyering.

REPORTING BUGS         top

       GNU coreutils online help: <>
       Report tr translation bugs to <>

COPYRIGHT         top

       Copyright © 2016 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.

SEE ALSO         top

       Full documentation at: <>
       or available locally via: info '(coreutils) tr invocation'

COLOPHON         top

       This page is part of the coreutils (basic file, shell and text
       manipulation utilities) project.  Information about the project can
       be found at ⟨⟩.  If you have a
       bug report for this manual page, see 
       ⟨⟩.  This page was obtained from
       the tarball coreutils-8.25.tar.xz fetched from 
       ⟨⟩ on 2016-10-04.  If you discover
       any rendering problems in this HTML version of the page, or you
       believe there is a better or more up-to-date source for the page, or
       you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a mail

GNU coreutils 8.25              January 2016                           TR(1)