Linux Commands set operations

	sort file1 file2 | uniq	Union of unsorted files
	sort file1 file2 | uniq -d	Intersection of unsorted files
	sort file1 file1 file2 | uniq -u	Difference of unsorted files
	sort file1 file2 | uniq -u	Symmetric Difference of unsorted files
	join -a1 -a2 file1 file2	Union of sorted files
	join file1 file2	Intersection of sorted files
	join -v2 file1 file2	Difference of sorted files
	join -v1 -v2 file1 file2	Symmetric Difference of sorted files

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