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I have a bash script called test.sh that uses command-line argument:

lynx -dump $1 > $name".txt"

But I need name to be created from the argument by specific keywords in the argument.

An example is:

http://www.pcmag.com/article2/0,2817,2412941,00.asp
http://www.pcmag.com/article2/0,2817,2412919,00.asp

Both are two separate articles but are the difference can only be seen in those 12 characters. How do I create a variable from a url for those 12 characters? So that when I run test.sh in Terminal:

./test.sh http://www.pcmag.com/article2/0,2817,2412941,00.asp 

there is a text file saved as 0,2817,2412941,00?

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2 Answers 2

up vote 1 down vote accepted

You can do it in awk like this:

$ name=$(echo $1 | awk -F[/.] '{print $(NF-1)}')
$ echo $name
0,2817,2412941,00

By using / and . as delimiters, the stuff you want will be present in the last but one field which can be accessed using NF-1

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This worked! Thank you! –  user1883614 Dec 7 '12 at 22:41
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You can use the basename command:

basename http://www.pcmag.com/article2/0,2817,2412919,00.asp ".asp"

which will give you:

0,2817,2412919,00
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This works for one link but I'm dealing with over 100 links and the job would become tedious. But thank you nevertheless! –  user1883614 Dec 7 '12 at 22:42
    
You could of course also use another line to get the extension first, and then use it in this line. But then you're indeed better of with Gurus solution. –  Gerhard Burger Dec 8 '12 at 9:30
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