如何搜索文件中的行并提取搜索行的上方和下方的行.
我的意见就像
Tue Jun 26 14:59:46 2012
Warning ffffffff act_msg_ctms_remove_from_pending_queue: deleting message 44817201 from the queue.
Tue Jun 26 14:59:46 2012
Warning ffffffff Finishing processing record number 44817201
Tue Jun 26 14:59:46 2012
Warning 5000000 activity_queue_manager_finish_cb: unknown activity 120.
Tue Jun 26 14:59:46 2012
Warning ffffffff Activity State Machine priority (2) finished
Tue Jun 26 14:59:46 2012
Warning ffffffff
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Processing database file "INCOMING_MESSAGES" record number 47810234 from user "(unknown)"
Tue Jun 26 14:59:46 2012
Warning ffffffff ACTIVITY data: rec_num …