我机器上为什么不能使用ping命令
我的机器上突然不能使用ping、ftp、net、ipconfig命令了,看样子是系统环境变量被改过了,谁能帮帮我,告诉我如何解决?谢谢。
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\waxiao-n>ping
'ping' is not recognized as an internal or external command,
operable program or batch file.
C:\Documents and Settings\waxiao-n>