Insert new pattern in newline after the nth occurrence of a line pattern - Bash in Ubuntu 12.04

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awk to extract and print first occurrence of pattern in each line

I am trying to use awk to extract and print the first ocurrence of NM_ and NP_ with a : before in each line. The input file is tab-delimeted, but the output does not need to be. The below does execute but prints all the lines in the file not just the patterns. Thank you :). file tab-delimeted ...

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How to display when nth line match a pattern?

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4. Shell Programming and Scripting

Insert certain field of matched pattern line above pattern

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Printing nth and n+1th line after a pattern match

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line number of the i-th occurrence of a pattern

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search a pattern and if pattern found insert new pattern at the begining

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Shell Programming and Scripting