大家看看我的电脑是不是见鬼了？
PING.EXE明明是在system32目录下的，并且已经在PATH路径中了，谁为什么我进“命令提示符窗口”后，在其它目录里不能执行PING 命令了了？真是怪？但是，在开始－－> 运行：ping，能正确执行的！为什么这样啊？
D:\> path
PATH=%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;E:\Sybase\SQ
Anywhere 8\win32;E:\Sybase\Shared\win32;E:\Sybase\Shared\Sybase Central 4.1;E:
Sybase\Shared\PowerBuilder;E:\Sybase\Shared\Web Targets;E:\Sybase\Shared\DataDi
ect;C:\Program Files\Common Files\Ulead Systems\MPEG;E:\Universal Extractor\bin
E:\Win2000 Support Tools\;C:\Program Files\Altiris\Software Virtualization Agen
\;E:\Nmap;D:\sys-tools\
D:\> ping
'ping ' 不是内部或外部命令，也不是可运行的程序
或批处理文件。
D:\> c:
C:\WINNT\system32> ping
Usage: ping [-t] [-a] [-n count] [-l size] [-f] [-i TTL] [-v TOS]
[-r count] [-s count] [[-j host-list] | [-k host-list]]
[-w timeout] destination-list
Options:
-t Ping the specified host until stopped.
To see statistics and continue - type Control-Break;
To stop - type Control-C.
-a Resolve addresses to hostnames.
-n count Number of echo requests to send.
-l size Send buffer size.
-f Set Don 't Fragment flag in packet.
-i TTL Time To Live.
-v TOS Type Of Service.
-r count Record route for count hops.
-s count Timestamp for count hops.
-j host-list Loose source route along host-list.
-k host-list Strict source route along host-list.
-w timeout Timeout in milliseconds to wait for each reply.
C:\WINNT\system32>
------解决方案--------------------
%systemroot%变量无法正常解析
控制面版／系统／高级／环境变量／系统变量，path,把%systemroot%替换为c:\winnt
[解决办法]
楼上说 的没有错...照楼上的说法去做试试看吧...
