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以前不怎么用at，现在使用它还真发现不好使。
先是启动task scheduler服务就是问题

sc start scheduler

提示： StartService: OpenService FAILED 1060:
没办法，我只要打开services.msc，手动将计划服务启动了
接着我在cmd下：

at 20:50 mytest.vbs

这个mytest.vbs代码：

msgbox "该休息了！"

可以到了20:50分什么反应都没的，查看任务管理起，多了个wscript.exe
我忘了at隐藏执行命令了，但我没想到at把我这个mytest.vbs隐藏执行，连对话框都给"弄丢了"
不过：

at 20:56 msg %username% "该休息了！"

到了时间会正常显示。
我现在想问大家，

1：服务为什么用sc start 启动出错？应该怎样启动不会出错？
2：怎么让at命令启动VBS后，对话框能不隐藏？
3：大家认为弹对话框最可靠的命令是那个？

1. 是不是你的命令写错了？

sc应该用service_name
net start应该用display_name

SERVICE_NAME: Schedule
DISPLAY_NAME: Task Scheduler

2. at命令创建的计划任务会以system权限运行，VBS的对话框是无法弹出的。可以用schtasks命令创建一个以当前用户运行的计划任务。

3. 没有最可靠的，具体情况具体分析吧。

sc start schedule

提示：
StartService FAILED 1056:

sc config schedule start= auto

sc start schedule

如果这样还不行的话，net start可以吗？

net start "Task Scheduler"

Originally posted by HAT at 2008-5-19 10:24 PM:

sc config schedule start= auto

sc start schedule

如果这样还不行的话，net start可以吗？

net start "Task Scheduler"

可以：
net start "Task Scheduler"

奇怪，不知楼主用的哪个版本的系统。到别人电脑上拷贝一个sc.exe，覆盖到自己电脑上不知可否。

Originally posted by HAT at 2008-5-20 01:47 AM:
奇怪，不知楼主用的哪个版本的系统。到别人电脑上拷贝一个sc.exe，覆盖到自己电脑上不知可否。

Microsoft Windows XP
(C) 版权所有 1985-2001 Microsoft Corp.
我机子是刚装的，没有染毒，只是我对SC命令用法不很熟悉

又看了一边帮助，没发现什么特别之处啊。楼主的系统是正版的吗？

C:\test>sc /?
*** Unrecognized Command ***
DESCRIPTION:
SC is a command line program used for communicating with the
NT Service Controller and services.
USAGE:
sc <server> <option1> <option2>...

The option <server> has the form "\\ServerName"
Further help on commands can be obtained by typing: "sc "
Commands:
query-----------Queries the status for a service, or
enumerates the status for types of services.
queryex---------Queries the extended status for a service, or
enumerates the status for types of services.
start-----------Starts a service.
pause-----------Sends a PAUSE control request to a service.
interrogate-----Sends an INTERROGATE control request to a service.
continue--------Sends a CONTINUE control request to a service.
stop------------Sends a STOP request to a service.
config----------Changes the configuration of a service (persistant).
description-----Changes the description of a service.
failure---------Changes the actions taken by a service upon failure.
qc--------------Queries the configuration information for a service.
qdescription----Queries the description for a service.
qfailure--------Queries the actions taken by a service upon failure.
delete----------Deletes a service (from the registry).
create----------Creates a service. (adds it to the registry).
control---------Sends a control to a service.
sdshow----------Displays a service's security descriptor.
sdset-----------Sets a service's security descriptor.
GetDisplayName--Gets the DisplayName for a service.
GetKeyName------Gets the ServiceKeyName for a service.
EnumDepend------Enumerates Service Dependencies.

The following commands don't require a service name:
sc <server> <command> <option>
boot------------(ok | bad) Indicates whether the last boot should
be saved as the last-known-good boot configuration
Lock------------Locks the Service Database
QueryLock-------Queries the LockStatus for the SCManager Database
EXAMPLE:
sc start MyService

Would you like to see help for the QUERY and QUERYEX commands? :

盗版，

sc /?
*** Unrecognized Command ***
DESCRIPTION:
SC is a command line program used for communicating with the
NT Service Controller and services.
USAGE:
sc <server> <option1> <option2>...

The option <server> has the form "\\ServerName"
Further help on commands can be obtained by typing: "sc "
Commands:
query-----------Queries the status for a service, or
enumerates the status for types of services.
queryex---------Queries the extended status for a service, or
enumerates the status for types of services.
start-----------Starts a service.
pause-----------Sends a PAUSE control request to a service.
interrogate-----Sends an INTERROGATE control request to a service.
continue--------Sends a CONTINUE control request to a service.
stop------------Sends a STOP request to a service.
config----------Changes the configuration of a service (persistant).
description-----Changes the description of a service.
failure---------Changes the actions taken by a service upon failure.
qc--------------Queries the configuration information for a service.
qdescription----Queries the description for a service.
qfailure--------Queries the actions taken by a service upon failure.
delete----------Deletes a service (from the registry).
create----------Creates a service. (adds it to the registry).
control---------Sends a control to a service.
sdshow----------Displays a service's security descriptor.
sdset-----------Sets a service's security descriptor.
GetDisplayName--Gets the DisplayName for a service.
GetKeyName------Gets the ServiceKeyName for a service.
EnumDepend------Enumerates Service Dependencies.

The following commands don't require a service name:
sc <server> <command> <option>
boot------------(ok | bad) Indicates whether the last boot should
be saved as the last-known-good boot configuration
Lock------------Locks the Service Database
QueryLock-------Queries the LockStatus for the SCManager Database
EXAMPLE:
sc start MyService

Would you like to see help for the QUERY and QUERYEX commands? :

你用我的试试吧
http://upload.cn-dos.net/img/432.zip

感动下，兄的这份真诚让我心里倍感温暖。
谢谢，