Linux

CentOS System InstallationSystem Startup process:Bootloader-->kernel (INITRAMFS)-->rootfs-->/sbin/initAnaconda: System installation programTui: A text window based on the graphics library cursesGUI: Graphics windowSetup startup

Brother even Linux training , a small compilation of common Linux learning Commands:　　1 CP Copy commandParameter:-p file attributes are copied together　　- r Copy Folder　　- D Soft chain information, etc. copy together　　 -A is a shorthand for -rdp　　2

The function of the WC(Word Count) command in a Linux system is to count the number of bytes, words, and lines in the specified file, and to display the output of the statistic results. 1. command format:WC [Options] File ...2. Command

Brother Even Linux training, a small compilation of common Linux learning commands:1 CP Copy commandParameter:-p file attributes are copied together-R Copy Folder-D soft Chain information, etc. copy together-A is a shorthand for-RDP2 Find File

Ifconfig: Configuring network devicesifconfig eth0 192.168.1.1Echo: Display a piece of textEcho $PATHEcho-e "A/TB/TC/ND/TE/TF"TTY: Display the file name of the terminal link standard input deviceTtyTty--versionSTARTX: Start x WindowsStartx-w (Force

1.Linux processes in memory data structuresYou can see that an executable program is divided into code snippets, data segments, and uninitialized data segments when it is stored (not being transferred into memory):1) Code snippet : A machine

The process pool is a lot more in server applications. =The following is the implementation code for the semi-synchronous semi-asynchronous process pool:#ifndef  _PROCESSPOOL_H#define _PROCESSPOOL_H#include #include # include #include #include

Users, Groups, permissionsPermissions: R,w,xFile:R: Readable, you can view the contents of the file using commands like CatW: writable, can edit or delete this fileX: Executable, exacutable, can command prompt to be submitted to the kernel to run0---

1, create a 10G partition, and the format of the Ext4 file system;(1) The block size is required to 2048, the reserved space percentage is 2, the volume label is MyData, the default Mount property contains ACLs;(2) Mount to the/data/mydata directory,

The composition and function of computer main components of the computer:controller, arithmetic, memory, input device, output device. controller: Is the central nervous system of the whole computer, its function is to explain the control

It takes a good attitude to get in touch with Linux, which is not something you can take in two days a day. Learn a basic, can install the system, can install common services, can compile, can configure storage space, can configure the system

Self-made Linux systems:1. Partitioning and creating the file system[Email protected] ~]# Fdisk/dev/sdbDivided into two necessary partitions/DEV/SDB1 corresponding/boot/dev/sdb2 corresponding to the root/To create a file system:[Email protected] ~]#

In the BIOS phase, the computer's behavior is basically written dead, there are not many things to do, generally is the power, BIOS, master boot record, operating system four steps. So we generally think that loading the kernel is the first step in

Sources of Linux1) In 1984, the GNU Engineering and Free Software Foundation was foundeddevelopment of a completely free, Unix-like GNU operating system, but no source code for UNIX systems= = Create an open source version of the UNIX business= =

First, review the processView all process commands: PSView the specified process command: ps-ef|grep Java (Java refers to the service name)End Process command: kill-9 9028 (9028 refers to PID)Second, clean up the cacheTo view cached commands:

Compressionxz-z files to compressIf you want to keep the compressed file plus the parameter-K, if you want to set the compression rate add parameter-0 to-9 to adjust the compression rate. If not set, the default compression level is 6Extractxz-d

Script-a action.log–t 2> Time.logPress Ctrl+d to exit recordingReturn visit Scriptreplay Time.log Action.log or directly with the view command Cat,tail viewRole1 Log the login system personnel to execute the command$ VI ~/.profile# run the script

1, the Linux login environmentLinux is a multi-tasking, multi-user operating system designed to achieve a multi-user, simultaneous use of a single computer large task.Multi-User: Early computer resources are tight, so that more people can use

Linux is almost ubiquitous, whether it is server building or client development, and the basic skills of the operating system are essential to the full stack.Selection of the systemLinux distributions can be broadly divided into two categories, one

Install mysql5.1.73 and mysql5.1.73 on CentOS6.5 Ideas: 1. Check whether mysql has been installed. rpm -qa|grep mysql Or   yum list installed mysql     2. Check whether the installation package exists.   yum list mysql*     3. Install mysql