Cloud Applications

In linux, some common shutdown/restart commands include shutdown, halt, reboot, and init, which can be used to restart the system. However, the internal working process of each command is different, through the introduction in this article, we hope

Anyone who has played Linux should know that if you want a program to run in the background, you only need to add an & amp; symbol at the end of the command. However, this method is not very safe. some programs will stop when you log out of the

Check whether lm exists in cpuinfo. If lm exists, 64-bit is supported. lm means longmode. the specific command is as follows: cat/proc/cpuinfo | grepflags check whether the output contains lm characters or cat/proc/cpuinfo | grepflags | greplm |

In linux, the tab key may be at most one. Using tabs when using commands such as ls and cd can reduce many keyboard input. for example, to enter a directory with a long directory name, you may just need to input the first few characters, then, use

# Query UUID [root @ localhostdata] # ls-l/dev/disk/by-uuid/total0lrwxrwxrwx. 1rootroot10Apr1015: 49d2822e25-bbff-4bd9-9812-95edb189e4ab-& gt ;.. /.. /sda1lrwxrwxrwx. 1rootroot10Apr1101: 55e8cc2ee7-03df-4535-9 # Query UUID [Root @

1. Network Configuration # Description of the display information of ifconfigeth0ifconfig command: Linkencap network interface type, such as Ethernet or PPP HWadrr 1. network configuration # Ifconfig eth0 Description of ifconfig command display

Common Linux operating system logon files include: 1)/var/log/secure: file used to log on to the system to access data, such as pop3, ssh, telnet, ftp and so on will be recorded here. 2)/ar/log/wtmp: record the login information record, encoded, so

PS: I have been using Nginx for two or three years. now I often encounter some basic questions from new users. I have no time to answer them one by one. it took me some time this afternoon, based on your experience, I will share the main

PS: sometimes you find that you cannot modify a file with the root permission, most of the reason is that you used the chattr command to lock the file. The chattr command has a great role. some of the functions are supported by the linux kernel

Taskset is a CPU adjustment tool that can assign system tasks to the specified CPU this article takes nodejs as an example of the first step, query the nodejs process pgrepnode1927719283 step 2, lock the CPUtaskset-pc019277 (where 0 represents CPU0,

Dongxi has integrated some useful things and can be pasted in the nginx configuration file. the functions are complicated, including anti-Leech and anti-injection. location =/robots.txt {access_logoff; log_not_foundoff;} location =/favicon. ico

CentOS system startup process POST (power-on self-check): detects that the hardware maps a program in the RAM chip to the ROM address space under CPU control, execute the command to check the health status of the system hardware, such as whether the

File (folder) View class Command ls -- display the content in the specified directory description: ls display results are different colors to distinguish File categories. Blue indicates the Directory, gray indicates normal files, green indicates

Siege, an open-source stress testing tool for Web server stress testing, allows you to perform concurrent access to multiple users on a WEB site according to the configuration, record the corresponding time of all the request processes of each user,

In linux, use pxe for automatic installation. first install and start the vsftp server. Copy the installation tree to the server. in order to facilitate user access, you can copy the installation tree to the pub directory under ftp. we should start

# How to partition a linux system in a production scenario? # Date: 2011-07-31 # Author: Old Boy # QQ: 31333741 MAIL: oldboy521@hotmail.com # QQ exchange group: 45039636 # blog: http://oldboy.blog.51cto.com # psite: http://oldboy.cc (coming soon) #

First install the NTFS-3G package on linux, enable the linux system to identify the directory to be mounted when creating a disk in the ntfs format mkdir/sda. execute the following command to start mounting 1mount-tntfs-3g/dev/sda5/sda. now you can

What is the lsof command? Lists information about files opened by processes. The opened file can be 1. common File, 2. directory 3. network File System File, 4. character device file 5. (function) shared library 6. pipe, named pipe 7. symbolic link 8

Anyone who has installed linux knows that it is easy to install linux on only one machine. we only need to put the optical drive in, and install it step by step! But when we install multiple machines in one data center at the same time, it is

Usage: cat [option] [file]... outputs a combination of [file] or standard input to standard output. -A, -- show-all is equivalent to-vET-B, -- number-nonblank is equivalent to-vE-e, -- show-ends: $-n, -- number is displayed at the end of each