GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
CentOS 2.1AS(Slurm) |
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tr(1) |
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tr − translate or delete characters
tr [OPTION]... SET1 [SET2]
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
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−−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:
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\NNN |
character with octal value NNN (1 to 3 octal digits) | ||
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\\ |
backslash | ||
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\a |
audible BEL | ||
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\b |
backspace | ||
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\f |
form feed | ||
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\n |
new line | ||
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\r |
return | ||
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\t |
horizontal tab | ||
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\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.
Written by Jim Meyering.
Report bugs to <bug-textutils@gnu.org>.
Copyright
© 2001 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.
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.
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tr(1) | |