TR(1) GNU textutils 2.0 (August 1999) 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, --complement
first complement SET1
-d, --delete
delete characters in SET1, do not translate
-s, --squeeze-repeats
replace sequence of characters with one
-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:
character with octal value NNN (1 to 3 octal digits)
\h|120u+0ubackslash
.....
audible BEL
backspace
form feed
new line
return
horizontal tab
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TR(1) GNU textutils 2.0 (August 1999) TR(1)
vertical tab
CHAR1-CHAR2
all characters from CHAR1 to CHAR2 in ascending order
[CHAR1-CHAR2]
same as CHAR1-CHAR2, if both SET1 and SET2 use this
[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=]
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TR(1) GNU textutils 2.0 (August 1999) TR(1)
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.
REPORTING BUGS
Report bugs to <bug-textutils@gnu.org>.
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 tr
should give you access to the complete manual.
COPYRIGHT
Copyright c 1999 Free Software Foundation, Inc.
This is free software; see the source for copying
conditions. There is NO warranty; not even for
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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