Linux

test Environment system version: CentOS Linux release 7.3.1611 (Core)1.Installing the MARIADB packageThis package contains a Mariadb-server and some tool kits[email protected] conf.d]# yum groupinfo mariadbloaded plugins:fastestmirrorloading mirror

Encryption method:Symmetric encryption: Encrypt and decrypt using the same passwordPublic Key cryptography: each password appears in pairs, one for the private key (secret key) and one for the public keyOne-way encryption, hash encryption:

I. Linux system architectureLinux is an inverted tree structureEverything in Linux is a file.These files are at the top of the system directory "/"/is the root directory/directory Below is a level two directory these directories are automatically

1. Rescue mode1.1 System Start-up process650) this.width=650; "id=" image_operate_31051490931065827 "name=" image_operate_70251490847895579 "src="/HTTP/ s4.sinaimg.cn/mw690/003cgut5zy79ubsbkf5d3&690 "width=" 690 "height=" 535 "alt="

tar command1. Function Tar command is unix/A reliable way to back up files in a Linux system can work in almost any environment, and its use rights are for all users. 2. Format tar [main option + Secondary options] File or directory Eg:tar zxvf

Unpackwars= "true" autodeploy= "true" >Documentation at:/docs/config/valve.html---Documentation at:/docs/config/valve.htmlNote:the pattern used is equivalent to using pattern= "common"-prefix= "Localhost_access_log" suffix= ". txt"pattern= "%h%l%u%t

Linux Research (basic cognition article)What is Linux?Linux is an open-source Unix-like system, the mere term Linux only refers to a kernel-space operating system kernel (kernel) that was developed and released in 1991 by Linus. Torvalds. Why would

1. Review the processPS commandEnter the following PS command to display all running processes:# PS aux | Lesswhich-A: Show All processesA: Show all processes that include other users in the terminalX: Show the process without control terminalTask:

Text Processing Tools Grep,eprep and Fgrep:grep: (Global search regular expression and print out of the line), full search of regular expressions and display of corresponding rowsText Search Tool: line-by-line search of target files based on

PWD Displays the current working directoryWW.H.O.WhoAmIDisplays the current user and the established SSH linkUseradd create a new normal userpasswd Modifying a user's password# represents the root Superuser who is currently working$ represents a

Since the working relationship started using the Linux system, after a year of use, now record 9 commands that are not easy to remember but are important.1 su Switch UserSu-root/su root is different, Su-also switches the corresponding user's

drwxr-xr-x 11 liuchenglong staff 374B 3 25 09:33 packageLinux file management and Windows are very different, many details do not learn are difficult to understand, but in fact, they are paper tigers, as long as a little learning can be mastered,

(i) Application basicsThe difference between a 1.Linux command and an applicationLinux command: Execution files are small, placed in/bin and/sbinInstall the operating system together with a fixed formatInternal commands are integrated within the

When we installed a new CentOS system in the virtual machine, although in the installation of the NTP set up the selection of Shanghai, but entered the system, enter the date command, check the system time and the current time is not the same, we

FTP is the abbreviation for file Transfer Protocol (document Transfer Protocol), and Chinese is called "Interfax protocol". Used for two-way transmission of control files on the Internet. At the same time, it is also an application (application).

file permissions:ls-ld/mnt/Drwxr-xr-x. 2 root root 6 Mar 2014/mnt/-|rwxr-xr-x.| 2|root|root|6| Mar 2014|/mnt— —————————— — ———— ———— — ——————————— ———1 2 3 4 5 7 8 91: File type, non-modifiable-: FileD: catalog (directory)L: Linked file (link)B:

AwkThe operation of a program is a variable of some column state, which is represented by the change of variable value.Start with a letter or underscore, and the rest can be: letters, numbers, underscores.It is advisable to follow the following

the latest version ofCentos/rhel 7Now comes with the System Storage Manager (also calledSSM), a unified command-line interface developed by Red Hat to manage a wide variety of storage devices. At present, there are three kinds of availableSSMVolume

Construction of the LNMP architecture centos6.8-i686 Mysql Php Nginx Install some necessary rpm and PHP components (new system) before buildingYum Install wget gcc vim* libxml2 libxml2-devel OpenSSL openssl-devel Curl

Composerinstallation1, to https://getcomposer.org/download/download composer, directly below download the latest version of the composer compression package, extracted after the Composer.phar, rename composer to be placed under /usr/local/bin/ . 2.