GNU/Linux |
RedHat 6.2(Zoot) |
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uniq(1) |
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uniq − remove duplicate lines from a sorted file
../src/uniq [OPTION]... [INPUT [OUTPUT]]
Discard all but
one of successive identical lines from INPUT (or standard
input), writing to OUTPUT (or standard output).
−c, −−count
prefix lines by the number of occurrences
−d, −−repeated
only print duplicate lines
−D, −−all−repeated
print all duplicate 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
−w, −−check−chars=N
compare no more than N characters in lines
−N |
same as −f N |
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+N |
same as −s N |
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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.
Written by Richard Stallman and David MacKenzie.
Report bugs to <bug-textutils@gnu.org>.
Copyright
© 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.
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) | ![]() |