[已解決]求助批處理選出文本中,第一列為4碼的行求助將A.txt文本中 選出,第一列為4碼的行到 B.txt a文本:0055,0905,28.3200632,0905,3.586929,0905,54.00XJF00,0905,143.489941A,0905,50.00B0861,0905,6.669928,0905,20.10,20.40IDX11,0905,156.39Y001B,0905,8.582329,0905,57.00b文本:0055,0905,28.326929,0905,54.009928,0905,20.10,20.402329,0905,57.00 謝謝