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UNIQ(1)								       UNIQ(1)

NAME
       uniq - report repeated lines in a file

SYNOPSIS
       uniq [ -udc [ +-num ] ] [ file ]

DESCRIPTION
       Uniq copies the input file, or the standard input, to the standard out‐
       put, comparing adjacent lines.  In the normal case, the second and suc‐
       ceeding	copies	of repeated lines are removed.	Repeated lines must be
       adjacent in order to be found.

       -u     Print unique lines.

       -d     Print (one copy of) duplicated lines.

       -c     Prefix a repetition  count  and  a  tab  to  each	 output	 line.
	      Implies -u and -d.

       -num   The  first  num  fields together with any blanks before each are
	      ignored.	A field is defined as a string of  non-space,  non-tab
	      characters separated by tabs and spaces from its neighbors.

       +num   The first num characters are ignored.  Fields are skipped before
	      characters.

SOURCE
       /sys/src/cmd/uniq.c

SEE ALSO
       sort(1)

BUGS
       Field selection and comparison should be compatible with sort(1).

								       UNIQ(1)

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