environment-variables

问题 I am trying to create an environment variable for yesterday's date. It MUST be in the format of MM/DD/YYYY . For code I currently have: set m=%date:~-7,2% set /A m -= 1 set DATE_YESTERDAY=%date:~-10,2%/%m%/%date:~-4,4% echo %DATE_YESTERDAY% This works great, HOWEVER, when I offset to yesterdays day with -1 instead of " 12/03/2019 " I get " 12/3/2019 ". Thus, missing the zero/0. Any ideas to keep format as MM/DD/YYYY ? I have seen many other questions regarding this, however, all come short!

问题 I am trying to create an environment variable for yesterday's date. It MUST be in the format of MM/DD/YYYY . For code I currently have: set m=%date:~-7,2% set /A m -= 1 set DATE_YESTERDAY=%date:~-10,2%/%m%/%date:~-4,4% echo %DATE_YESTERDAY% This works great, HOWEVER, when I offset to yesterdays day with -1 instead of " 12/03/2019 " I get " 12/3/2019 ". Thus, missing the zero/0. Any ideas to keep format as MM/DD/YYYY ? I have seen many other questions regarding this, however, all come short!

问题 I have both jdk and jre installed on my windows 7. I have set the JAVA_HOME to C:\Program Files\Java\jdk1.6.0_23 I have add C:\Program Files\Java\jdk1.6.0_23\bin to PATH. but the java.exe still pointing to my jre dir, which is C:\Program Files\Java\jre6\bin since when I run java.exe -server it complains Error: no `server' JVM at `C:\Program Files\Java\jre6\bin\server\jvm.dll'. can anyone tell me what else do I need to set? 回答1: since you are on windows, java doesn't work like that. there is a

问题 I have both jdk and jre installed on my windows 7. I have set the JAVA_HOME to C:\Program Files\Java\jdk1.6.0_23 I have add C:\Program Files\Java\jdk1.6.0_23\bin to PATH. but the java.exe still pointing to my jre dir, which is C:\Program Files\Java\jre6\bin since when I run java.exe -server it complains Error: no `server' JVM at `C:\Program Files\Java\jre6\bin\server\jvm.dll'. can anyone tell me what else do I need to set? 回答1: since you are on windows, java doesn't work like that. there is a

问题 How to set the path environment variable from ant script 回答1: Is this for an <exec> task? You can set environment variables when you run an <exec> task: <exec executable="${my.command}"> <env key="foo" value="bar"/> <arg line="some value"/> </exec> You can use <property environment="env"/> to expand the path: <property environment="env"/> <exec executable="${my.command}"> <env key="PATH" value="${env.PATH}:${my.directory}"/> </exec> If this is for some custom task that requires an environment

问题 I'm developing a angular app, and this app has about a 10 configurable properties (depending on the environment and client). I had those properties in json config files, but this is really troublesome: there must be specific builds per env/company. So I would like to retrieve those properties once from the backend on app load. So in order to do this I created a Provider var app = angular.module('myApp', [...]); app.provider('environment', function() { var self = this; self.environment; self

问题 I'm developing a angular app, and this app has about a 10 configurable properties (depending on the environment and client). I had those properties in json config files, but this is really troublesome: there must be specific builds per env/company. So I would like to retrieve those properties once from the backend on app load. So in order to do this I created a Provider var app = angular.module('myApp', [...]); app.provider('environment', function() { var self = this; self.environment; self

问题 Here I tried to spawn bash using execle() and wanted to set TMOUT environment for the new bash. It worked well. I could see TMOUT environment variable from the new bash shell. <example1> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> int main(void) { char *env[] = {"TMOUT=60", NULL}; execle("/bin/bash", "bash", NULL, env); return 0; } But if I do the same thing like example2 to use sudo, I cannot see TMOUT environment variable from the new shell. <example2>

问题 Is it possible to set the environment variables of a process "A" in a way that they will be valid only for its current run (process "A" will be started by my process) using C++? 回答1: Assuming you are prepared to rely on the Windows API, when you call the CreateProcess function to launch a process, you have the lpEnvironment parameter. Normally you pass NULL which means, use the environment of the creating process . However, you can supply an environment block which will be used by the new

问题 Is it possible to set the environment variables of a process "A" in a way that they will be valid only for its current run (process "A" will be started by my process) using C++? 回答1: Assuming you are prepared to rely on the Windows API, when you call the CreateProcess function to launch a process, you have the lpEnvironment parameter. Normally you pass NULL which means, use the environment of the creating process . However, you can supply an environment block which will be used by the new