从 Windows 批处理脚本中的文件中读取值
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Reading a value from a file in a windows batch script
提问by Harry Lime
I'm trying to read a value from a file and use it in a subsequent command.
我正在尝试从文件中读取值并在后续命令中使用它。
I have a file called AppServer.pidwhich contains the process id of my app server (just the number, it's not a properties file or anything like that).
我有一个名为的文件AppServer.pid，其中包含我的应用程序服务器的进程 ID（只是数字，它不是属性文件或类似的东西）。
The app server is hanging, so I want to take this value and pass it to the kill command. So my script will be something like
应用服务器挂了，所以我想把这个值传给kill命令。所以我的脚本将类似于
SET VALUE_FROM_FILE=AppServer.pid # or something
taskkill /pid %VALUE_FROM_FILE% /f
Is there a convenient way to do this in Windows scripting?
在 Windows 脚本中是否有一种方便的方法可以做到这一点？
回答by Cocowalla
This works:
这有效：
SET /P VALUE_FROM_FILE= < AppServer.pid
taskkill /pid %VALUE_FROM_FILE% /f
The /P parameter used with SET allows you to set the value of a parameter using input from the user (or in this case, input from a file)
与 SET 一起使用的 /P 参数允许您使用来自用户的输入（或者在这种情况下，从文件输入）来设置参数的值
回答by RuntimeException
for /f %%G in (appid.txt) do (SET PID=%%G)
echo %PID%
taskkill etc here...
This might help !
这可能会有所帮助！
回答by isapir
If you know the name of the process, as returned from the command tasklist, then you can run taskkillwith a filter on the process name, i.e. /FI IMAGENAME eq %process_name%.
如果您知道从 command 返回的进程名称，tasklist那么您可以taskkill在进程名称上使用过滤器运行，即/FI IMAGENAME eq %process_name%.
For example, to kill all of the processes named nginx.exerun:
例如，要杀死所有名为nginx.exerun的进程：
taskkill /F /FI "IMAGENAME eq nginx.exe"
Which "reads in English": kill all tasks (forcefully if needed via /F) that match the filter /FI"IMAGENAME equals nginx.exe".
其中“以英语读取”：杀死/F与过滤器/FI“IMAGENAME equals nginx.exe”匹配的所有任务（如果需要，强制通过）。
