Random Linux+ Question March 22

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You have two lists in .txt files in your home directory such as you see below:

list1.txt

555-1234 Fred
555-2345 Sally
555-3456 Bill
555-4567 Carole

list2.txt

555-1234 Sales
555-2345 Marketing
555-3456 Testing
555-4567 Development

You want to create an output that would combine the lists from both files so that they would display as follows:

555-1234 Fred Sales
555-2345 Sally Marketing
555-3456 Bill Testing
555-4567 Carole Development

Then you want to send that output to a new file called directory.txt. Of the commands below, which one will accomplish your goal?

1. merge list1.txt list2.txt > directory.txt
2. combine list1.txt list2.txt > directory.txt
3. link list1.txt list2.txt >> directory.txt
4. join list1.txt list2.txt > directory.txt
5. cat list1.txt list2.txt >> directory.txt

 

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Hm - I had to check this on-line, as I regard this operation outside of a proper DB as 'dangerous'. I'll go for [HIDE]4[/HIDE]

Harry.

 

Only one response? No other takers?

 

[HIDE]4?[/HIDE]

JMPL

 

[HIDE]im either 2 or 4[/HIDE]

[HIDE]4[/HIDE]

trip please can you provide some reference when the answer is out so we can read up on it! Thnx!

EDIT: LOL either we all good guessers or we just suck!

 

You got it. The answer is 4. Here are references to learn more:

http://www.computerhope.com/unix/ujoin.htm

http://linux.about.com/library/cmd/blcmdl1_join.htm