usr/man/cat1/uniq.0



UNIQ(1)             UNIX Programmer's Manual              UNIQ(1)


N\bNA\bAM\bME\bE
     uniq - report repeated lines in a file

S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS
     u\bun\bni\biq\bq [ -\b-u\bud\bdc\bc [ +\b+n ] [ -\b-n ] ] [ input [ output ] ]

D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN
     _\bU_\bn_\bi_\bq 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 that repeated lines must be adjacent in order to
     be found; see _\bs_\bo_\br_\bt(1).  If the -\b-u\bu flag is used, just the
     lines that are not repeated in the original file are output.
     The -\b-d\bd option specifies that one copy of just the repeated
     lines is to be written.  The normal mode output is the union
     of the -\b-u\bu and -\b-d\bd mode outputs.

     The -\b-c\bc option supersedes -\b-u\bu and -\b-d\bd and generates an output
     report in default style but with each line preceded by a
     count of the number of times it occurred.

     The _\bn arguments specify skipping an initial portion of each
     line in the comparison:

     -\b-_\bn      The first _\bn 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.

     +\b+_\bn      The first _\bn characters are ignored.  Fields are
             skipped before characters.

S\bSE\bEE\bE A\bAL\bLS\bSO\bO
     sort(1), comm(1)


Printed 7/9/88           April 29, 1985                         1