Linux

Under Linux systems, when a TCP connection disconnects, it retains a certain amount of time in the TIME_WAIT state before the port is released. When there are too many concurrent requests, there will be a large number of time_wait state connections,

For example, there is a script file tests.sh, which reads as follows:1 #!/bin/234 CD/5echo" Hello, this is a test sample! "There are three ways to execute a script on Linux:1, the script plus executable permissions, directly execute the

/binThis directory contains common commands for Linux./ BootThe directory by default is the Linux boot file and kernel./cdromThis directory is empty when you just installed the system, you can hang the optical drive file system in this directory./

Because of the special feeling and interest in the data, I first contacted the MySQL database, and the MySQL database is mostly configured to run under the Linux system, so it has a strong interest in such an open source system as Linux. In my eyes,

During the undergraduate study process, there are a lot of knowledge about the process on the Internet, but for the process is what has not let me satisfied with the answer (the following from the network, feel that the process of understanding the

Gzip[ function Description ]Compression of files#gizp is GNU Software, the overall performance is good, Linux system is the preferred compression tool,the tar archive command -Z parameter also uses gzip/gunzip to decompress[ syntax Format ]gip[

I. Comparison of all Linux performance testing sites1. Very good website, original: http://os.51cto.com/art/201402/430050.htmMonitor CPU, memory, network, IO and other commands and tools2. SysstatA software toolkit commonly used in Linux system

1. Virtual machine can add Sisc hard disk, add to restart virtual machine to take effectAfter reboot, use Fdisk-l to view the newly added disk,/dev/sdb is the second hard drive[[email protected] ~]# fdisk -ldisk /dev/sdb: 1073 mb, 1073741824  bytes 2

Basicecho "Hello word" output Hello WordTouch file creates a file nameCommon shortcut keysTAB: Can be used to complete commands when forgetting a commandCTRL + C: Force the current program to terminateCtrl+d: Keyboard input end or exit

The user enters a start-up host and an end host to detect the presence of the host in the LAN rangePingck.sh:#!/bin/bash#study#v0.0.2#ping 192.168.21.1-192.168.21.254Read-p "Enter start Host:" SnumRead-p "Enter End Host:" EnumFor I in $ (seq $snum 1

The creation, execution, monitoring and termination of processes under Linuxhttp://blog.csdn.net/miss_acha/article/details/43671047http://blog.csdn.net/rosekin/article/details/15341835Linux is implemented under a script: monitor a process that does

1. When the boot startsAfter Linux is loaded, it initializes hardware and device drivers and then runs the first process init.Init continues the boot process based on the configuration file, starting other processes. Typically, the modifications are

The following documents are included in the putty to download the website:Where Pscp.exe is a tool for remotely copying files.Official website: https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.htmlLink: http://pan.baidu.com/s/1pKEhIFx

Now to the implementation stage of Docker,Its underlying namespace,cgroup should be understood in depth.The API it calls is slowly becoming familiar.#include #includeintMain () {pid_t fpid; //int count = 0;Fpid =Fork (); if(Fpid 0) printf ("Error in

Set up the Centos7 ftp environment and centos7ftp I haven't played linux, and I 've been tossing over ftp for half a day. It's hard to pass the test. It's not easy. Operating Environment: vmvm centos7 First, solve the network problem. By default,

Summary of the maximum number of file handles in linux (reproduced) Recently deployed and launched an engine. After it is started, the memory and logs show that everything is normal, but external access to the engine is unavailable. After several

Understanding of Linux Processes I have studied the process during my undergraduate course and have a lot of online knowledge about the process. However, I have never been satisfied with my answers to what the process is. (The following is from the

Enable the ssh service on the Linux server for ssh remote login !, Linuxssh I recently logged on to linux Using ssh to log on to linux! First, go to the/etc directory and store some configuration files, such as passwd, In the/etc directory. to use

CentOS6.4 install MySQL and centos6.4 install mysql First, run the yum list | grep mysql command to check whether MySQL has been installed. [root@ecs-3c46 /]# yum list | grep mysql Then, install the mysql database using yum. First, you can enter the

Install yar in php7 to generate a docker image, yardocker Docker contains three concepts:(1) Remote repository is the gathering place of all images in the remote image repository (you cannot enter the operation ).(2) Local images are images pulled