NAME

comm − select or reject lines common to two sorted files

SYNOPSIS

comm [ -123 ] file1 file2

DESCRIPTION

Comm reads lines from 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 input.

Each option digit or suppresses printing of the corresponding column. 

EXAMPLE

comm -12 file1 file2

Print lines common to two sorted files. 

SOURCE

/appl/cmd/comm.b

SEE ALSO

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