Match 2 fields in different files

Match 2 fields in different files

References

Reference NO 1

http://stackoverflow.com/questions/15197270/match-2-fields-in-different-files

Reference NO 2

http://stackoverflow.com/questions/11381516/compare-fields-in-two-files-taking-closest-match

Reference NO 3

http://www.unix.com/shell-programming-scripting/105879-awk-matching-fields-combining-files.html

Reference NO 4

http://theunixshell.blogspot.com/2012/12/file-comparisons-using-awk-match-columns.html

Reference NO 5

http://publib.boulder.ibm.com/infocenter/iseries/v5r4/topic/books_web/c0925086109.htm

Reference NO 6

http://www.cse.ohio-state.edu/~sgomori/314/algs.html

Reference NO 7

http://www.linuxquestions.org/questions/linux-newbie-8/comparing-two-fields-in-two-files-using-awk-891314/

Reference NO 8

http://macosx.com/forums/mac-os-x-system-mac-software/318215-help-compare-two-columns-text-files-extract-whole-row-if-they-match.html