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06-07-2017, 12:45 PM
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#1
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Member
Registered: Dec 2011
Location: Chandler, AZ
Posts: 286
Rep:
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How to pull second line past keyword in a file into a shell variable.
I have a file which contains a keyword im looking for.
I need to pull the second line past the keyword into a shell variable.
Any suggestions on how to do this?
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06-07-2017, 01:22 PM
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#2
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Moderator
Registered: Mar 2011
Location: USA
Distribution: MINT Debian, Angstrom, SUSE, Ubuntu, Debian
Posts: 9,900
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I usually do things the brute force way first and then figure out something more refined.
Or not. For something like this I may double grep, or use grep and cut.
For instance, I'd grep to find that line, providing it is a unique line in the file.
And then I'd use cut to remove all before or after. Another alternative is if there are delimiters, I'd use awk to treat it as column data and then select the correct column I needed.
Really what I'd do is go so far, and then web search for things like "grabbing the second field in a string using linux command line" and find examples and then choose the most comfortable one for me, that being the one I can best understand.
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06-07-2017, 01:34 PM
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#3
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LQ Veteran
Registered: Jan 2011
Location: Abingdon, VA
Distribution: Catalina
Posts: 9,374
Rep:
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Code:
Variable=$(grep -A2 <keyword> file | tail -1)
grep -A is the man page lookup for this exercise.
Have fun!
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1 members found this post helpful.
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06-07-2017, 02:27 PM
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#4
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Member
Registered: Dec 2011
Location: Chandler, AZ
Posts: 286
Original Poster
Rep:
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Quote:
Originally Posted by Habitual
Code:
Variable=$(grep -A2 <keyword> file | tail -1)
grep -A is the man page lookup for this exercise.
Have fun!
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Cool, didn't know grep could do that.
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06-07-2017, 02:30 PM
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#5
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LQ Veteran
Registered: Jan 2011
Location: Abingdon, VA
Distribution: Catalina
Posts: 9,374
Rep:
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Go TeamLQ!
Quote:
Originally Posted by usao
Cool
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Cool is saying "Thank You".
So, we don't have to feel like "support"?
You're Welcome.
Last edited by Habitual; 06-07-2017 at 04:06 PM.
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