Vista時代的到來,DOS還有用嗎,命令行還有用嗎?當然!
對于任意win下的程序,在命令行中就支持輸出重定向.
比如在cmd下輸入ping 127.0.0.1 >> c:\test.txt
控制沒有任何輸出?!
去看看c盤下的test.txt
Pinging 127.0.0.1 with 32 bytes of data:
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Ping statistics for 127.0.0.1:
??? Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
??? Minimum = 0ms, Maximum = 0ms, Average = 0ms
這就是重定向操作符">>"的作用
1?public?class?TestWinCon?{
2?????/**
3??????*?@param?args
4??????*/
5?????public?static?void?main(String[]?args)?{
6?????????System.out.println("haha");
7?????}
8?}
9?
cmd下執行
java TestWinCon >>aa.txt
會在本目錄下生成aa.txt
內容就是
haha
posted on 2007-01-03 15:47
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