Replacing lines matching a multi-line pattern (sed/perl/awk)
Dear Unix Forums,
I am hoping you can help me with a pattern matching problem.
What am I trying to do?
I want to replace multiple lines of a text file (that match a multi-line pattern) with a single line of text. These patterns can span several lines and do not always have the same number of line breaks in between.
Example input file
One of the simpler patterns may look like this (pseudocode; meaning that only parts of the line are relevant and that the number of line breaks can vary):
The matching text should be replaced with a string (e.g. "@MATCH").
In the end, the file should look like this:
Desired output Current solution for adjacent lines only:
Unfortunately, this does not seem to work for several line breaks (ie. when there is "gap" between the lines containing RtlInitAnsiString and memmove).
Stuff I tried that didn't match anything:
Any ideas how to get this kind of multi-line pattern matching to work? I'd prefer sed or perl, but awk is fine too
Experts,
I am a beginner to Unix Shell Scripting
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I know sed and awk has options to give range of line numbers, but
I need to replace pattern in specific lines
Something like
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