manpagez: man(ual) pages & more
man tr(1)
Home | html | info | man
tr(1)                            User Commands                           tr(1)


       tr - translate or delete characters


       tr [OPTION]... SET1 [SET2]


       Translate, squeeze, and/or delete characters from standard input, writ-
       ing 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 charac-

       -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  them-
       selves.  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.


       Written by Jim Meyering.


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


       Copyright  (C) 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.


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

GNU coreutils 8.25               January 2016                            tr(1)

coreutils 8.25 - Generated Sun Jan 31 16:39:08 CST 2016
© 2000-2016
Individual documents may contain additional copyright information.