system-variable | 易学教程

How to create a folder in the home directory?

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问题 I want to create a directory path = "$HOME/somedir" . I've tried using boost::filesystem::create_directory(path) , but it fails - apparently the function doesn't expand system variables. How can I do it the simplest way? (note: in my case the string path is constant and I don't know for sure if it contains a variable) edit: I'm working on Linux (although I'm planning to port my app to Windows in the near future). 回答1: Use getenv to get environment variables, including HOME . If you don't know

Is there any syntax like : #{systemProperties['environment_variable_name']} to get the system variable?

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问题 Does using #{systemProperties['environment']} in the applicationcontext.xml file of Spring return the value associated with environment? Or is there any way to ge the system variable value in the spring applicationcontext.xml file. 回答1: When I remember right, then there is a difference between: You can access the system properties in different ways: #{systemProperties['databaseName']} #{systemProperties.databaseName} ${databaseName} //$ instead of # !! With #{systemProperties['databaseName']}

Refresh system variable using vbscript/QTP

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问题 I want to set system variable MQSERVER for connecting to MQ using QTP. Each time this value is changed from QTP, I need to restart QTP to reflect changes. E.g. in the system variables window, MQSERVER = ABCD change the variable using Set objWSH = CreateObject("WScript.Shell") Set objSystemVariables = objWSH.Environment("SYSTEM") objSystemVariables(MQVariableName) = MQVariableValue The variable is set correctly but does not reflect in QTP code when connecting to websphere MQ. Immediately when

setting the webapp %PATH% environment variable in azure

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问题 I am working on an azure webapp project. In order for my application to work, I needed to install a third party open source software on the server. The only way that I found to do that on the azure webapp, was to manually copy all the folders of the software on my project and then add all the required environment variables and also add few paths to the path system variable. I found how I can add the system variables, but I could not find the way to set the path variable on azure webapp. 回答1:

Does Javascript / jQuery have system vars?

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问题 I noticed strange issue. Look at this jQuery: $(function(){ status = 1; status1 = 2; $('body').append(status+' - '+status1); }); Fiddle As you can see output is: - 2 So status is system var for JavaScript or jQuery? And is there any other vars like this? 回答1: JavaScript has global variables and in browsers, global variables are properties of the global object which is window . Now, window itself has a couple of predefined properties and some of them are read-only , like window.status [MDN]

Default PATH system variable for Windows? [closed]

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问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . I've accidentally messed up the PATH variable in Windows and I'm wondering if anyone could provide the default for me. 回答1: My freshly installed Windows 8.1 has the following value in PATH : C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\; 回答2: %JAVA_HOME%\bin

How to create a folder in the home directory?

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I want to create a directory path = "$HOME/somedir" . I've tried using boost::filesystem::create_directory(path) , but it fails - apparently the function doesn't expand system variables. How can I do it the simplest way? (note: in my case the string path is constant and I don't know for sure if it contains a variable) edit: I'm working on Linux (although I'm planning to port my app to Windows in the near future). Fred Nurk Use getenv to get environment variables, including HOME . If you don't know for sure if they might be present, you'll have to parse the string looking for them. You could

SETX doesn't append path to system path variable

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I have tried below command to append some path to system path variable by batch-file : setx PATH "%PATH%;C:\Program Files\MySQL\MySQL Server 5.5\bin" I have checked system variable path after running above batch-file, above path isn't in there. You can see all windows Variable value content in below : C:\Program Files (x86)\AMD APP\bin\x86_64;C:\Program Files (x86)\AMDAPP\bin\x86;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\;C:\ProgramFiles (x86)\ATI Technologies\ATI.ACE\Core-Static; What am i doing wrong? To piggy-back on @Endoro's

SETX doesn't append path to system path variable

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问题 I have tried below command to append some path to system path variable by batch-file : setx PATH "%PATH%;C:\Program Files\MySQL\MySQL Server 5.5\bin" I have checked system variable path after running above batch-file, above path isn't in there. You can see all windows Variable value content in below : C:\Program Files (x86)\AMD APP\bin\x86_64;C:\Program Files (x86)\AMDAPP\bin\x86;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\;C:

Environment/system variables in server.xml

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How can I use environment/system variables in tomcat server.xml, context.xml, etc configuration files? I tried to use ${ENV_VAR_NAME} (both for environment and system variable), ${env.ENV_VAR_NAME} (for environment variables). And nothing seems to work. How it's realized in my box. Bash-script for startup: #!/bin/sh SMEMORY=1G XMEMORY=1G if [ $ENV == DEV ]; then port_shutdown="8005" port_http="8080" port_https="8443" elif [ $ENV == SIT ]; then port_shutdown="8006" port_http="8081" port_https="8444" elif [ $ENV == UAT ]; then port_shutdown="8007" port_http="8082" port_https="8445" else echo