pcregrep

I revamped this question since I've been reading a bit on XML. I have a file source file that contains a list of AuthNumbers. 111222 111333 111444 etc. I need to search for the numbers in that list and find them in a corresponding XML file. In the xml file the line is formatted as such: <trpcAuthCode>111222</trpcAuthCode> This can be achieved quite painlessly using grep however I require the entire block containing the transaction. The block starts with: <trans type="network sale" recalled="false"> or <trans type="network sale" recalled="false" rollback="true"> and/or some other variations.

I need to check if one file is inside another file by bash script. For a given multiline pattern and input file. Return value: I want to receive status (how in grep command) 0 if any matches were found, 1 if no matches were found. Pattern: multiline, order of lines is important (treated as a single block of lines), includes characters such as numbers, letters, ?, &, *, # etc., Explanation Only the following examples should found matches: pattern file1 file2 file3 file4 222 111 111 222 222 333 222 222 333 333 333 333 444 444 the following should't: pattern file1 file2 file3 file4 file5 file6