You said each entity in the file is composed of 4 lines but the second one in your example only has 3 lines..

Do you have code/thoughts you've tried so far?

one method would be to read 4 lines at a time. if the 4th line matches, print the first line. Another method would be to set $/ to '# input' and then regex the resulting 'lines' (or grep all of them).

In reply to Re: print matching lines by davidrw
in thread print matching lines by Anonymous Monk

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