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+# LPD - Line Printer Daemon Protocol (old-style UNIX printing) - RFC 1179
+# Pattern attributes: ok fast fast
+# Protocol groups: printer ietf_rfc_documented
+# Wiki: http://www.protocolinfo.org/wiki/LPD
+# Copyright (C) 2008 Matthew Strait, Ethan Sommer; See ../LICENSE
+#
+# This pattern is untested.
+
+lpd
+# print waiting jobs: ^\x01[!-~]+\x0a$
+# receive a print job: ^\x02[!-~]+\x0a.[\x01\x02\x03][\x01-\x0a -~]*\x0a$
+# Send queue state: ^[\x03\x04][!-~]+[\x09-\x0d]+[a-z][\x09-\x0d -~]*\x0a$
+# Remove jobs: ^\x05[!-~]+[\x09-\x0d]+([a-z][!-~]*[\x09-\x0d]+[1-9][0-9]?[0-9]?|root[\x09-\x0d]+[!-~]+).*\x0a$
+
+# This pattern looks like it might match random data once in a while, but
+# testing shows that this is not the case.
+
+^(\x01[!-~]+|\x02[!-~]+\x0a.[\x01\x02\x03][\x01-\x0a -~]*|[\x03\x04][!-~]+[\x09-\x0d]+[a-z][\x09-\x0d -~]*|\x05[!-~]+[\x09-\x0d]+([a-z][!-~]*[\x09-\x0d]+[1-9][0-9]?[0-9]?|root[\x09-\x0d]+[!-~]+).*)\x0a$
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