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| Thread | Thread Starter | Forum | Replies | Last Post |
| How to search for keywords in subsequent lines | rdhanek | Shell Programming and Scripting | 12 | 08-11-2009 05:43 AM |
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08-21-2009
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search for keyword in subsequent lines and delete the second line
I have my data something like this
I need to search for the keyword yyyy in the susequent lines and if it is present, delete the second line with keyword. In other words, if a keywords is found in two subsequent lines delete the second line. input data: Code:
aaaa bbbbb cccc dddd xxxx yyyy xxxxx abc xxxx yyyy xxxxx xyz aaaa bbbbb cccc dddd rrrrrrrrr ttttttt yyyy xxxx yyyy xxxx aaaa bbbbb cccc dddd Code:
output expected: aaaa bbbbb cccc dddd xxxx yyyy xxxxx abc aaaa bbbbb cccc dddd rrrrrrrrr ttttttt yyyy xxxx yyyy xxxx aaaa bbbbb cccc dddd |
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08-21-2009
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Should be something like this:
Code:
awk '/yyyy/ && NR!=n {n=NR+1}
/yyyy/ && n==NR {next}
{print}' file
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