GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
Ubuntu 9.04(Jaunty Jackalope) |
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uniq(1) |
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uniq − report or omit repeated lines
uniq [OPTION]... [INPUT [OUTPUT]]
Discard all but one of successive identical lines from INPUT (or standard input), writing to OUTPUT (or standard output).
Mandatory
arguments to long options are mandatory for short options
too.
−c, −−count
prefix lines by the number of occurrences
−d, −−repeated
only print duplicate lines
−D, −−all−repeated[=delimit−method]
print all duplicate lines delimit−method={none(default),prepend,separate} Delimiting is done with blank lines.
−f, −−skip−fields=N
avoid comparing the first N fields
−i, −−ignore−case
ignore differences in case when comparing
−s, −−skip−chars=N
avoid comparing the first N characters
−u, −−unique
only print unique lines
−z, −−zero−terminated
end lines with 0 byte, not newline
−w, −−check−chars=N
compare no more than N characters in lines
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−−help |
display this help and exit |
−−version
output version information and exit
A field is a run of whitespace, then non−whitespace characters. Fields are skipped before chars.
Note: ’uniq’ does not detect repeated lines unless they are adjacent. You may want to sort the input first, or use ’sort −u’ without ’uniq’.
Written by Richard Stallman and David MacKenzie.
Report bugs to <bug−coreutils@gnu.org>.
Copyright
© 2008 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.
The full documentation for uniq is maintained as a Texinfo manual. If the info and uniq programs are properly installed at your site, the command
info uniq
should give you access to the complete manual.
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uniq(1) | |