Linux

GdB really is a very powerful thing ah, here to record the basic operation of GDB itThe follow-up may be added, but for the time being enough you won't write much.The first is the Ubuntu Terminal 2 most basic operation: (otherwise will gdb but can

The full name of Grub is Grand Unified BootloaderFirst generation grub0.x Grub legacy Traditional GrubSecond generation grub1.x GRUB2The second generation and the first generation have no relation to the code, and the second generation of grub is

add self-testPost: Power-on self-test. Power on the self testing. The current x86 CPU will automatically find a section of code to perform a self-test at the specified location after powering on.The code is placed in the ROM. The ROM's

Linux IntroductionI. Common operating system (OS)WindownsAndroidIosLinuxUnixOS XIi. Introduction of Linux1, Linux features:(1) free use, free, open source.(2) Multi-user, multi-tasking, multi-threading, multi-CPULinux (free of charge) is based on

What is 1.PWD?Displays the absolute path where you are currently2. What is the difference between absolute and relative pathsAbsolute path is starting from/directoryRelative paths are relative to where they are today3. Switch to the previous

chkconfig 显示文件内容尾部Syntax format: chkconfig "option" chkconfig [options]Note: There must be at least one space between each element in the Chkconfig command and in the following optionsOption Description: parameter Options

First, lamp compilationlinux+apache+mysql+phpPHP can be found by Appchae to parse PHP script, to operate the database through PHP1. Installing the GCC compilerHow to compile the source code C language under LinuxView Memory FreeView hard Disk

Gradle is based on the Groovy language and is oriented toward Java applications. Automated building tools based on DSL (domain-specific language) syntax. On GitHub, there's a lot of gradle projects, some Gradel with Maven, and you can see that

First, Linux install JDK on (JDK version >1.8 , the installed can be ignored )Using the command: Java-version, a Java version appears that has been installed, such as:1. Download jdk, download tar.gz format JDK installation package:

1. Generate a public/private key pair[[email protected] ~]# ssh-keygen-t rsa-p '-P for the password,-p ' means the empty password, you can not use the-p parameter, so that three cars to enter, with-P on a return.The command will generate a hidden

Unconsciously, did a lot of IOU experiment, of course, these temporarily only stay in two and three layers, so there is no and unix/linux operating system generated too much intersection.Usually just use the IOU, only the UNIX kernel Cisco command

head 显示文件内容头部Syntax format: Head "option" "File" head [options] [file]Attention: There must be at least one space between each element in the head command and in the options and files that follow. If more than one file is created, the file

Depending on the user's requirements, some scripts need to be run automatically after the system starts normally.chkconfig xxx on this command automatically creates a script in the corresponding RC2 RC3 RC4 directoryTake RC2.D to see it first.This

mv 移动或重命名文件Syntax format: MV "option" "Source" "dest" mv [options] [source file] [target file]Note: There must be at least one space between each element in the MV command and in the following options and filesOption Description:

1. PS aux | grep nginxUsage scenario: You want to check the Nginx print log, and do not know the Nginx log path.PS: is the command to view the process. Use this command to determine which processes are running and running, whether the process is

cp 复制文件或目录Syntax format: CP "option" "Source" "Dest" CP [options] [source file] [target file]Note: There must be at least one space between each element in the CP command and in the options and files that follow.Option Description:

Usual usage: source filepath or. FilePathFunction: Enables the current shell to read into a shell file with a path of FilePath and executes all the statements in the file in turn, typically to re-execute the newly modified initialization file for

One, compile the executable fileG++–c Hello.cpp Compile the file, generate the target file hello.og++ hello.o–o a.out Link and rename the executable file a.outg++ hello.cc Compile links together, generate a.outg++ hello.cc–o Hello generates a.out

The history command, which is a command typed at the command line before the login session.There are two ways to query history commands in Linux History command Hidden files in the current user directory. Bash_history I.

Development requirements to install Linux, Baidu has some information, of course, for reference only, otherwise into the pit.Step one: Make CentOS 7 image file, this step no pit1. Prepare USB flash drive above 8GDownload the words online a lot, here