Search words in a line and print next 15 lines.


 
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# 1  
Old 04-23-2012
Search words in a line and print next 15 lines.

I have a text file ( basically a log file) and i have 2 words (alpha, beta),

Now i want to search these two words in one line and then print next 15 lines in a temp file. there would be many lines with alpha and beta But I need only last occurrence with "alpha" and "beta" and next 15 lines.

I tried grep in following way:

Code:
grep "alpha" FILE | grep "beta"

but it gives me all lines with these words. also dont know how to get next 15 lines.

I'll be thankful if you also tell me command in case number of words increase, like 3 or 4 word to search on same line, alpha, beta, gamma,

EDITD:

Sorry, guys. question is updated. I apologies for my mistake (actually my laptop battery ended when i was trying to edit it)

Last edited by kashif.live; 04-23-2012 at 12:18 PM..
# 2  
Old 04-23-2012
Anything you have tried so far?
# 3  
Old 04-23-2012
Have you researched?

Take a look at
Code:
grep

# 4  
Old 04-23-2012
Including the line matching alpha and beta, or not? Also, if you match alpha and beta again in those 15 lines, should it match again and possibly print more?
# 5  
Old 04-24-2012
Code:
# tac /path/to/file | grep -m 1 "alpha.*beta" -B 15 | tac

I assumed that you are looking for "alpha...beta", not "beta ..alpha"
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