tr
(1g)
Name
tr - translate or delete characters
Synopsis
tr [OPTION]... SET1 [SET2]
Description
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, 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
--version
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
CHAR1-CHAR2
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User Commands TR(1)
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
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User Commands TR(1)
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.
AUTHOR
Written by Jim Meyering.
REPORTING BUGS
Report tr bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/core-
utils/>
General help using GNU software: <http://www.gnu.org/geth-
elp/>
Report tr translation bugs to <http://translationpro-
ject.org/team/>
COPYRIGHT
Copyright (C) 2012 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 redis-
tribute it. There is NO WARRANTY, to the extent permitted
by law.
ATTRIBUTES
See attributes(5) for descriptions of the following
attributes:
+---------------+--------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+--------------------+
|Availability | file/gnu-coreutils |
+---------------+--------------------+
|Stability | Uncommitted |
+---------------+--------------------+
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 command
info coreutils 'tr invocation'
should give you access to the complete manual.
NOTES
This software was built from source available at
https://java.net/projects/solaris-userland. The original
community source was downloaded from
GNU coreutils 8.16 Last change: March 2012 3
User Commands TR(1)
http://ftp.gnu.org/gnu/coreutils/coreutils-8.16.tar.xz
Further information about this software can be found on the
open source community website at http://www.gnu.org/soft-
ware/coreutils/.
GNU coreutils 8.16 Last change: March 2012 4