$home/manuals/plan9_2nd/1/comm

COMM(1)                     General Commands Manual                    COMM(1)



NAME
       comm - select or reject lines common to two sorted files

SYNOPSIS
       comm [ -123 ] file1 file2

DESCRIPTION
       Comm  reads  file1  and  file2, which are in lexicographical order, and
       produces a three column output: lines only  in  file1;  lines  only  in
       file2;  and  lines in both files.  The file name means the standard in‐
       put.

       Flag or suppresses printing of the corresponding column.

EXAMPLE
       comm -12 file1 file2

              Print lines common to two sorted files.

SOURCE
       /sys/src/cmd/comm.c

SEE ALSO
       sort(1), cmp(1), diff(1), uniq(1)



                                                                       COMM(1)