startup | 易学教程

Is there a way to suppress MOTD when starting up R?

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问题 R loads a long and redundant message every time I start up. Is there a way to clear this using a command in my .rprofile ? Currently I just let it load then press ⌘ + L to clear it but it would be nice to just do it automatically. 回答1: How about the --quiet startup option? For me on Ubuntu : $ R --quiet > 来源： https://stackoverflow.com/questions/5319344/is-there-a-way-to-suppress-motd-when-starting-up-r

WPF app startup problems

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问题 My brain is all over the map trying to fully understand Unity right now. So I decided to just dive in and start adding it in a branch to see where it takes me. Surprisingly enough (or maybe not), I am stuck just getting my darn Application to load properly. It seems like the right way to do this is to override OnStartup in App.cs. I've removed my StartupUri from App.xaml so it doesn't create my GUI XAML. My App.cs now looks something like this: public partial class App : Application { private

PYTHONSTARTUP doesn't seem to work

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问题 I'm trying to use the PYTHONSTARTUP environmental variable. I set it to be "c:\python25\pythonstartup.py" in My Computer --> Advanced etc., and it doesn't seem to work. Opening IDLE doesn't run the script, although it recognized the variable: >>> import os >>> os.environ['PYTHONSTARTUP'] 'c:\\python25\\pythonstartup.py' >>> I'm using XP and Python 2.5.2. I do not wish to upgrade to 3.0 yet. Thanks 回答1: The documentation says that PYTHONSTARTUP is only run for interactive sessions. I'm not

Visual Studio 2010 Unknown Error on Startup

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问题 I'm trying to launch Visual Studio 2010 from my desktop and I just get this error box popping up saying "Unknown Error"... Anyone have an idea why this might happen? 回答1: I just fixed it, I uninstalled and reinstalled my version of the .NET Framework (v4.0). And then when I again tried to launch Visual studio it started up without any issue. 回答2: Here's some things you can check: Temporary de-activate all Addins Temporary disable all Extensions Check the Event Log for any errors Reset your

How does one run a program at startup that requires UAC elevation?

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问题 I have a program that monitors malicious files and deletes them. However it needs administrator rights to run. This program runs at startup, however the UAC popup is annoying for end users, especially if it appears every time the user logs in. Anyway, I am wondering if there is a way to run the program with administrator rights at startup with out nagging the user with the UAC popup. P.S: Disabling UAC is not a good idea because of security issues for the users. 回答1: You cannot. Windows Vista

Aws Ec2 run script program at startup

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问题 There is a method to setup an EC2 machine to execute Kafka starting script on startup? I use also java Aws SDK, so I accept both solution for a program java that run command on EC2 instance and solutions for a bash script mode that run kafka script at startup. 回答1: A script can be passed in the User Data property. If you are using the Amazon Linux AMI, and the first line of the script begins with #! , then the script will be executed the first time that the instance is started . For details,

application won't start on startup after adding a notifyicon

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问题 my app was working ok and it would execute on startup before. I added a notify icon and in my code,there are some places that this icon changes.I added all required icons in the root folder of my app,and everything is working fine with the icons,except the startup boot of my app. I can see my app's address in the "run" part of the registry(I mean everything is the same as when my app booted at startup properly).but my app won't run at startup anymore. any advice on my matter? PS:I thought I

WTSRegisterSessionNotification doesn't work sometimes on startup with XP home

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问题 I'm using the function/message to check if the workstation is locked. Now my application is in the startup folder. It has worked without any problems on XP pro, but since I'm using the program on XP home WTSRegisterSessionNotification fails about 50% of the time on startup, but it never fails when the system is already booted up. Any idea why this could happen? 回答1: On XP, services start in the background and do not block boot or logon. The termsrv service is most likely not running by the

How do I automatically start an application that needs X in Linux

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问题 I'm trying to start an X application automatically when the system enters run level 5. What is the correct way to do this? I've written a script and put it in /etc/init.d/ I've run the appropriate chkconfig commands to setup up the symbolic links in the /etc/rcX.d directories. Everything works fine except the script can't start the X application when I run: /sbin/service scriptName start The line looks like this (I've switched in xclock for the sake of argument): 'start') xclock I get the

Tomcat源码学习（二）--Tomcat_7.0.70 启动分析

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1、运行Tomcat_7.0.70源码项目build成功后，刷新整个项目，会发现多出一个output目录：为了让应用跑起来，可以检查一下output\build\conf下是否已经有配置文件，这些文件实际是从项目根路径conf目录下拷贝过来的。找到BootStarp.java文件，Debug前加入默认的catalina home路径作为启动参数。路径设置为output下build的绝对路径。比如我自己的机器设置的值是-Dcatalina.home="W:\workspace\tc7.0.70\output\build" 这样就可以愉快的在文件中加入断点Debug源码分析了。运行之后的效果图： OK，源码到此运行成功，完美~ 2、启动分析上面运行源码用的BootStarp.java这个类中的main方法（后面再对这个main方法做分析），实际上我们在用Tomcat的时候,大部分都是使用脚本文件startup.sh、startup.bat、shutdown.sh、shutdown.bat等脚本或者批处理命令来启动Tomcat的.大家一定知道改如何使用它，但是它们究竟是如何实现的，下面就一点一点的分析。由于在生产环境中，Tomcat一般部署在Linux系统下，所以将以startup.sh和shutdown.sh等shell脚本为准，对Tomcat的启动与停止进行分析。