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G'day Jalcock501,

You asked a very similar question, with a very similar title, using very similar data, in "Search file for certain lines".

Here's a cutdown version (with appropriate modifications) of the technique I provided in that thread (Re: Search file for certain lines):

#!/usr/bin/env perl use strict; use warnings; local $/ = "\nh"; print "Block $.\n", /^(E.*?)^G/ms ? $1 : "Error\n" while <DATA>; __DATA__ hblah Qblah Eblock_1_line_1 Eblock_1_line_2 Gblah hblah Qblah Gblah hblah Qblah Eblock_3_line_1 Eblock_3_line_2 Gblah

Output:

Block 1 Eblock_1_line_1 Eblock_1_line_2 Block 2 Error Block 3 Eblock_3_line_1 Eblock_3_line_2

In Re: Search file for certain lines, I provided an explanation of the code as well as links to more detailed documentation. I've introduced no new concepts here: if there's something you don't understand here, go back to the earlier post for more information.

-- Ken


In reply to Re: Reading file and matching lines by kcott
in thread Reading file and matching lines by Jalcock501

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