uniq - remove or report adjacent duplicate lines

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SYNOPSIS

DESCRIPTION

uniq reads the input file comparing adjacent lines. In the normal case, the second and succeeding copies of repeated lines are removed; the remainder is written on the output file. Note: repeated lines must be adjacent in order to be found; see sort.1v

OPTIONS

-c

Supersede -u and -d and generate an output report in default style but with each line preceded by a count of the number of times it occurred.

The normal output of uniq is the union of the -u and -d options.

-d

Write one copy of just the repeated lines.

-u

Copy only those lines which are not repeated in the original file.

The n arguments specify skipping an initial portion of each line in the comparison:

+n

The first n characters are ignored. Fields are skipped before characters.

-n

The first n fields together with any blanks before each are ignored. A field is defined as a string of non-SPACE, non-TAB characters separated by SPACE and TAB characters from its neighbors.

SEE ALSO

Created by unroff & hp-tools. © somebody (See intro for details). All Rights Reserved. Last modified 11/5/97