I need to print out lines (from multiple files) starting from a string "Server error:" to a line above the string "server info", only if I see a pattern /Btree/ within this text block. I tried using the flip-flop operator but it did not give me the desired result. The grep -B# -A# works but the number of lines within the text block may vary. Hence the grep approach does not suit me. Can you send me your thoughts?

In reply to Newbie : Data mining question by kri54sub

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