uniq(1)                                                   uniq(1)



NAME
     uniq - reports repeated lines in a file

SYNOPSIS
     uniq [-c] [-d] [+num] [-num] [-u] [infile [outfile]]

ARGUMENTS
     -c   Supersedes the -u and -d option and generates an output
          report in default style but with each line preceded by
          a count of the number of times it occurred.

     -d   Writes one copy of just the repeated lines.  The normal
          mode output is the union of the -u and -d mode outputs.

     infile
          Specifies the input file that uniq is going to read.

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

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

     outfile
          Specifies the output file into which the repeated lines
          will be written.

     -u   Outputs only the lines that are not repeated in the
          original file.

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 in the output
     file.  infile and outfile should always be different.  Note
     that repeated lines must be adjacent in order to be found;
     see sort(1).

EXAMPLES
     To print the contents of file1 with adjacent identical lines
     removed, enter:

        uniq file1


FILES
     /usr/bin/uniq
          Executable file





January 1992                                                    1

uniq(1)                                                   uniq(1)



SEE ALSO
     comm(1), diff(1), sort(1)





















































2                                                    January 1992