66 lines
1.1 KiB
Plaintext
66 lines
1.1 KiB
Plaintext
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Command: uniq - delete consecutive identical lines in a file
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Syntax: uniq [-cdu] [-n] [+n] [input [output]]
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Flags: -c Give count of identical lines in the input
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-d Only duplicate lines are written to output
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-u Only unique lines are written to output
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-n Skip the first n columns when matching
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+n Skip the first n fields when matching
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Examples: uniq +2 file # Ignore first 2 fields when
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comparing
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uniq -d inf outf # Write duplicate lines to outf
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Uniq examines a file for consecutive lines that are identical. All
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but duplicate entries are deleted, and the file is written to output.
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The +n option skips the first n fields, where a field is defined as a
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run of characters separated by white space. The -n option skips the
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first n spaces. Fields are skipped first.
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