comm(1)								       comm(1)

NAME    [Toc]    [Back]

     comm - select or reject lines common to two sorted	files

SYNOPSIS    [Toc]    [Back]

     comm [ - [	123 ] ]	file1 file2

DESCRIPTION    [Toc]    [Back]

     comm reads	file1 and file2, which should be ordered in ASCII collating
     sequence [see sort(1)], 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.

     Flags 1, 2, or 3 suppress printing	of the corresponding column.  Thus
     comm -12 prints only the lines common to the two files; comm -23 prints
     only lines	in the first file but not in the second; comm -123 prints
     nothing.

BUGS    [Toc]    [Back]

     Input lines over 4096 characters long are split every 4096	characters.

FILES    [Toc]    [Back]

     /usr/lib/locale/locale<b>/LC_MESSAGES/uxdfm
	  language-specific message file [See LANG on environ(5).]

EXTENDED DESCRIPTION    [Toc]    [Back]

     X/Open CAE	Specification(1994)--Commands and Utilities.

SEE ALSO    [Toc]    [Back]

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


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