I tried changing \n to \r\n as follows, but it still returned the entire contents: 
perl -ne "BEGIN{ $/ = qq(\r\nCAS*\r\n) } /00003/ and print" "filename"

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Yes, CAS* always starts at the beginning of the line, and those lines do not have any trailing blanks. I want to make sure that the matching entries start with LX* and end with CAS*. I could be wrong but it almost looks like the code above is matching starting with CAS* instead.

In reply to Re^4: Matching range of text with another string in between by periodicalcoder
in thread Matching range of text with another string in between by periodicalcoder

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