Unix Tip #4290- December 9, 2012


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MERGING TWO FILES


The following concatenates two
files but does not print duplicate lines.


$ awk 's[$0]++==0' file1 file2

(It stores/compares all line in/with the s array.)


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LAST 5 TIPS
4289 - BACKING UP PASSWORDS
4288 - DIFFERENCES WITHOUT USING DIFF
4287 - WHAT AM I LISTENING FOR?
4286 - HIDING ECHO
4285 - LINE LENGTH / NUMBER OCCURRENCES


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