Linux

SIGUSR1 user-defined signal default processing: Process terminationSIGUSR2 user-defined signal default processing: Process terminationWhen a process calls fork, because the child process replicates the storage image of the parent process at the

CA Digital Certificate ServicesCA Certificate Authority digital Certificate Authority CenterIndependent third-party institutions trusted by the parties to the communicationResponsible for certificate issuance, validation, revocation management,

Linux terminal usage tipsToday, I found that the Linux terminal has so many handy shortcuts.Shift+ctrl+t: New tab pageSHIFT+CTRL+W: Close tabCtrl+pageup: Previous tabCtrl+pagedown: Next tabShift+ctrl+pageup: Tab Shift leftShift+ctrl+pagedown: Tabs

This chapter blog related Linux knowledge points Computer = hardware + software.Von Neumann theory, five parts: cpu--arithmetic, controller, memory, input device, output device.The Shell environment configuration is configured through

Linux network devices are different from character devices and block devices, and no files correspond to network devices. The application operates the network device through the socket.The network device driver belongs to the data link layer,

Compression Packaging Introduction:Commonly used compressed file types:1, windows:.rar/.zip/.7z2, Linux:.zip/.gz/.bz2/.xz/.tar/.gz/.tar/.bz2/.tar/.xzGzip Compression Tool:1, experiment, CD to/tmp directory, use MKDI to create a directory d6z, in the

Description[[Email protected]~]# free -m total used free shared buffers Cached Mem: 995 785 209 06 92- /+ buffers/cache: 686 308swap: 478 200278 Available memory: Available memory=free+buffers+cached, i.e. 308=209+6+92Memory used:

Under Linux general use SCP This command to transfer files via SSH.First, what is SCP?The SCP is a shorthand for secure copy, a command for remotely copying files under Linux, and a similar command with CP, although the CP is only copied natively

Telnet and NC are general tools for testing port connectivity.Telnet can test the connectivity of the TCP port.NC can test the connectivity of TCP and UDP ports.Make sure that Telnet and NC tools are installed # Yum install nc# yum install TelnetTo

Linux detects bad and bad blocks on the hard driveLet's start with the definition of bad and bad blocks, which are parts of a disk or flash memory that can no longer be read and written, typically due to specific physical damage on the disk surface

Semaphores are an inter-process communication mechanism used to solve inter-process synchronization and mutex problems, including a variable called semaphore and a waiting queue for the resource waiting on the semaphore, and two atomic operations on

If the total capacity of the hard disk is greater than 2T, the system cannot be installed in MBR format.Use GPT formatYou can't use Fdisk to partition it at this time.To use parted to partitionMore than 2t hard disk partition, the old boy video used

Deep cooperation between Microsoft and Red Hat: helping enterprises more easily deploy containersAs early as 2015, Microsoft had reached a cooperation with Red Hat to develop cloud-based solutions for the enterprise market. Two years later, the two

Linux entry record: 16. Multi-command collaboration in Linux: pipelines and redirection, linux redirectionI. Multi-command collaboration In Linux, most commands are very simple, and there are few complex functional commands. Each command often only

Suse dual Nic binding, suse dual Nic Here we use two NICs, eth1 and eth2. Edit the/etc/sysconfig/network/ifcfg-bond0 file (this file does not need to be created) Device = 'bond0'BOOTPROTO = 'static'BROADCAST = '10. 10.2.255'IPADDR = '10. 10.

Rsync random start script and rsync script Server   1 #!/bin/sh 2 # chkconfig: 2345 21 60 3 # description: Saves and restores system entropy pool for \ 4 #create by xiaohu 5 #2014.06.02 6 #This script is the Rsync service script 7 .

VMware system clone and vmware cloneChapter 2 setting up a VMware environment 1st vmware Host Configuration-network configuration 1.1.1 adding Nic information to a VM (5) A. Right-click the VM and choose "Settings"> "add virtual Nic hardware device "

Re-install python and yum with rpm, and re-install pythonyum with rpm. The yum cannot be used for the python upgraded the other day. The prompt "No module named yum" is displayed. Then, I searched for it and said that I didn't think much about

Centos 7 linux System Default ftp installation configuration and deployment (detailed description), centos installation Configuration It took a long time for the minor to contact the Linux system and wanted to solve the problem of ftp installation

Nginx URL rewriting and nginxurl Rewriting Directory: 1.1 URL rewriting1.2 if command1.3 rewrite command1.4 differences between URL rewriting and reverse proxy 1.1 Introduction Url rewriting is provided by the ngx_http_rewrite_module. It is