tr(feed) - phpMan

TR(1)                            User Commands                           TR(1)

NAME
       tr - translate or delete characters
SYNOPSIS
       tr [OPTION]... SET1 [SET2]
DESCRIPTION
       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 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
       --version
              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
       CHAR1-CHAR2
              all characters from CHAR1 to CHAR2 in ascending order
       [CHAR*]
              in SET2, copies of CHAR until length of SET1
       [CHAR*REPEAT]
              REPEAT copies of CHAR, REPEAT octal if starting with 0
       [:alnum:]
              all letters and digits
       [:alpha:]
              all letters
       [:blank:]
              all horizontal whitespace
       [:cntrl:]
              all control characters
       [:digit:]
              all digits
       [:graph:]
              all printable characters, not including space
       [:lower:]
              all lower case letters
       [:print:]
              all printable characters, including space
       [:punct:]
              all punctuation characters
       [:space:]
              all horizontal or vertical whitespace
       [:upper:]
              all upper case letters
       [:xdigit:]
              all hexadecimal digits
       [=CHAR=]
              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.
       GNU  coreutils  online  help:  <http://www.gnu.org/software/coreutils/>;
       Report tr translation bugs to <http://translationproject.org/team/>;
AUTHOR
       Written by Jim Meyering.
COPYRIGHT
       Copyright (C) 2013 Free Software Foundation, Inc.  License GPLv3+:  GNU
       GPL version 3 or later <http://gnu.org/licenses/gpl.html>;.
       This  is  free  software:  you  are free to change and redistribute it.
       There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
       The full documentation for tr is maintained as a  Texinfo  manual.   If
       the  info and tr programs are properly installed at your site, the com-
       mand
              info coreutils 'tr invocation'
       should give you access to the complete manual.

GNU coreutils 8.22               November 2020                           TR(1)