To enable secure boot, install NVIDIA graphics driver in Fedora 21.Nvidia graphics drivers can download the latest version from official website >> Click to enterAdd executable permissions after download:#chmod +x Nvidia-linux*.runNote that the two conditions that are required to install an Nvidia graphics card are1. Nouveau (the default graphics driver) driver must be disabled2. Xserver (graphical interface) to stop runningThe solutions to the above
1. Configure the spring environment variablesIn the environment variable path add: D:\Program files\spring-boot-cli-1.5.8.release-bin\spring-1.5.8.release\binCmd:spring--versionJava--version2. Create a project using the SPRING-BOOT_CLI commandSpring init--build=maven--java-version=1.8--dependencies=web--packaging=jar--boot-version=1.5.8.release-- Groupid=com.samuel--artifactid=spring-
database connection pool selection algorithm
By default, database connections can be configured automatically using the DataSource pool. Here is an algorithm for selecting a specific implementation: because of the performance and concurrency of the Tomcat data source connection pool, we always use it preferentially when Tomcat is available. If HIKARICP is available, we will use it. If Commons DBCP is available, we will use it, but it is not recommended in the production environment. Finally, if
Through the recent system to improve the various aspects of the computer boot speed introduction, presumably everyone on the system to solve the problem of slow down also have a relevant understanding. And the system setup includes many aspects, each setting has a certain impact on the speed of the boot, introduced earlier to change the advanced system settings, set the system configuration to improve the
ubuntu Add boot boot execute script
method One: Edit the Rc.loacl script
Ubuntu will execute the script in the/etc/rc.local file after boot,So we can add the startup script directly to the/etc/rc.local.Of course to add to the statement: Exit 0 before the line.Such as:
sudo vi/etc/rc.local
Then, add the scripting code before exit 0. method Two: Add an Ubuntu
Main boot SectorThe main boot sector is located on the entire hard disk 0 cylinder 0 Head 1 Sector {(cylinder, head, Sector) | ( 0,0,1)},bios will jump to the first instruction in the MBR after executing its own inherent program. Take control of the system to the MBR. The main boot sector consists mainly of three parts: the Master
We use the ubantu System for the boot and installation of Linux USB flash drives. Here we will continue to introduce the manual boot method except the self-boot method, this kind of Linux USB boot installation method requires a little more steps than self-boot installation,
Article Title: Use the initrd File System U-boot to guide Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
Bootm 0x100000 0x240000(0x100000 indicates the address of the Linux kernel in flash, and 0x240000 indicates the address of initrd in flash)Setenv bootargs console = ttyS0, 115200n8 root =/dev/ram rw mem
There are three options for booting from the boot:1, put your Python program into a directory of C, and then put its shortcut to the Windows boot from the folder (folder location in the Start menu)2, Python packaged into EXE, put into the Startup folder3, start.c packaged into EXE, let start.c call your Python programStart.c#include int Main (void) { //setuid (0); System ("python h:/code/client.py");
Original: Use Xamarin to realize the Park friends: Android floating ball and boot from boottwo days ago, there was a cheese in the garden. Android floating small ball with boot from start , feel this is 360 play rotten function originally is so simple ah ... I don't have Java, and of course I don't know how to use ADT to develop Android apps.But I've seen a few days of Xamarin, C # I still will.With Xamarin
Enter username to boot WebLogic server:Error:Failed to get value from standard InputEnter Password to boot WebLogic server: Weblogic.security.SecurityInitializationException:Authentication for user deniedAt Weblogic.security.service.CommonSecurityServiceManagerDelegateImpl.doBootAuthorization ( commonsecurityservicemanagerdelegateimpl.java:966)At Weblogic.security.service.CommonSecurityServiceManagerDelega
Classes that overwrite Auto-configuration
Dynamic configuration with external properties "this article"
Customizing the Error page "second article"
The automatic configuration of Spring boot can save a lot of uninteresting configuration work, but not all automatic configuration can meet the requirements. For example, when you link a database, you need to use some or-mapping middleware, such as security-related configurations that require
The startup optimizations for Android are divided into three main parts:(1) bootloader optimization(2) Tailoring and optimization of Linux kernel(3) Tailoring and optimization of Android OS partsThis article focuses on the start-up optimization of the Android OS section, and the noteworthy optimization points are described below:1. Streamlining preload's classes and resourceAs described earlier, since all Android applications are forked from the zygote process, in order to share some class and r
, generally in the design process, the stdout to a document, the wrong information stderr saved to different files.• What are normal output, such as the time the program started running, the number of people who are now online, and so on.• What are the wrong output, such as the inability to find the URL that the user wants to go to, or the failure of the credit card authentication?With these perceptions, what is >/dev/null?>/dev/null. is to send stdout to/dev/null inside,/dev/null is unix/linux
, configure the kernel logo optionsExecute make menuconfig under the kernel path (make Xconfig)A. Select the Virtual Console to prepare the console display driverDevice Drivers--->character devices---> Virtual terminal[*] Support for console on virtual terminalB. Select the Virtual Console display driverDevice Drivers--->graphics support---> This option is available in console display driver--->Depending on your hardware selection by framebuffer or VGA[*] Framebuffer Console Support or[*] VGA Te
1. Introduction to Spring Boot
A framework for simplifying spring application development;
A large integration of the entire spring technology stack;
A one-stop solution for the development of the Java EE;
2. Micro-ServiceMicroServices: Architectural style (service micro)An application should be a small set of services, which can be exchanged via HTTP;Single application: All in oneMicroServices: Each functional element is ultimat
We complete our example by creating a fully self-contained executable jar file that can be run in production env. An executable jar (sometimes called a "fat jars") is an archive file that contains the classes you compile and all the jar dependencies your code needs to run.This example continues on the basis of Spring Boot (1): Guide.(1) Add the following dependencies in Maven:1 can be punched into a runnable jar package -2 Build>3 Plug
Modify the boot order# Vim/etc/inittab。。。。。。。D:3:initdefault: #找到这一行, D:3:initdefault: Minimized startup d:5:initdefault: Graphical interface Startup#去掉开机等待的5sVi/boot/grub/menu.lstTimeout=5 #设置开机选项描述, default is 5 secondsTo set a message after a successful loginThe/ETC/MOTD file sets the prompt message after successful login, and by default, there is no content in this file.After successful login, all conte
1. BIOS power-on self-test, detect hardware, find boot partition2, read and execute MBR (Master boot Record) bootloader (grub program)3, according to bootloader in the device load Kernel,kernel will start to detect hardware and load driver/etc/grub.conf is the configuration file in bootloader that needs to load kernel4. Kernel bootThe file is:/sbin/init, mainly to prepare the software execution Environment5
name refers to the first script that is started by the systemINIT.DDirectory name, in the directory is the start-up scripts for each service, such as sshd, httpd, etc.RCX.DThe directory name, followed by x, represents each runlevel. There is a link file within the directory where each service launches a script within INIT.D, starting with the name of the linked file. K starts with a service that does not start, and S begins to start the servicerc.localLink file, refer to/etc/rc.d/rc.local. When
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