File search using regex

[Chris Organ]

Hello everyone,

Wondering if someone can assist with regex searches using perl / grep / anything command line. I have lost a severe amount of hair looking for a multi-line search based on exact pattern matching. What I need to do is find this exact header within files within a directory and list them, similar output to using grep -l  ie a list.

The test I am searching for is (exactly, including LF) is the following 4 lines:

!D2
Invoice
!C
AUSTALIA EIGHT

Any assistance would be appreciated.

Chris
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