批處理如何提取指定行之后的內容到新文本原文本如下1994/11/2515:30:0018650187001865018690640186750.501994/11/2815:30:00183201850018320184651110184100.501994/11/2915:30:0018090180901809018090220180900.501994/11/3015:30:0018450184501845018450120184500.501994/12/0115:30:00186001865018400184501330185250.501994/12/0215:30:00183001838018200183801410182900.501994/12/0515:30:0018300183001822018300840182600.501994/12/0615:30:00182001828018100182501200181900.501994/12/0715:30:00184501849018400184801310184450.501994/12/0815:30:0018355184001835518360260183780.501994/12/0915:30:00184101842018250183501380183350.50我想提取1994/11/30之后的內容到新文本，格式如下1994/12/0115:30:00186001865018400184501330185250.501994/12/0215:30:00183001838018200183801410182900.501994/12/0515:30:0018300183001822018300840182600.501994/12/0615:30:00182001828018100182501200181900.501994/12/0715:30:00184501849018400184801310184450.501994/12/0815:30:0018355184001835518360260183780.501994/12/0915:30:00184101842018250183501380183350.50