Linux

Explain the output of the free command on Linux.Here is the result of the free run, with a total of 4 rows. For convenience, I added a column number. This can be seen as a two-dimensional array fo (free output). For example: FO[2][1] = 24677

First, install the relevant library files required by the system before compiling the installation.#yum-y install gcc gcc-c++ make cmake libtool autoconf LibaioTwo. Download the corresponding dependent library and memcached source package1. Download

Command usage: Displays the contents of 20 to 30 lines of the file-------------------------------------------------SeqGenerating sequencesSEQ >[file name] Generates a sequence of 1~100 rows:123...100Note:The sequence starts at 1 only when the

This is because you want to use Navicat to connect to the database and find that the connection is notBy looking at a lot of data and testing multiple times to find out because the firewall is not configured with Port 3306Words don't say, open the

1, create a 10G partition, and the format of the Ext4 file system;1) Use Fdisk-l to view the disk2) use the fdisk/dev/[hs]d[a-z] command, for example, my fdisk/dev/sdb into the Fdisk tool3) 650) this.width=650; "src=" Https://s5.51cto.com/wyfs02/M00/

linux--Compressed FilesWhy do I need to compress files?The file may take too much time to transfer due to the large file size during the transfer process. There are two obvious benefits to reducing file size, one is the ability to reduceLess storage

Linux CentOS7 Two machines with password-free login (key pair authentication)The two machines are:Host Name: fxq-1,ip:192.168.42.181Host name: Fxq-2, ip:192.168.42.182W command to view information for the currently logged on user[[email protected] ~]

Server do Web application (http/nginx) Linux kernel parameter optimizationUnder 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

Learning device driver Programming also has a period of time, also wrote a few drivers, so there are some new understanding and understanding of the device driver, summed up. Learning device-driven programming has also been a while, and several

1. Create a userGroupadd SFTP2. add user and set as SFTP groupUseradd-g sftp-s/sbin/nologin-m sftp (/sbin/nologin for users who are not allowed to log in to the shell)3. Set User passwordpasswd SFTP4. Create a user directory. and set

Need packages:System-config-kickstart # #自动应答脚本制作工具Syslinux # #获得pxelinux. 0 File Installation packageDHCP # #分配ip给客户机的服务Tftp-server # #提供tftp协议的服务HTTPD # #安装源共享服务650) this.width=650; "src="

1. IntroductionThe series of articles on document management is mainly about the Chen Li of the Document System management Knowledge lecture by teacher June.Linux can support different file systems, which originate from UNIX file systems and are a

The composition of the computer and the distribution of Linux introduces the composition and function of the computer The five major components of the computer are as follows; 650) this.width=650; "src="

Egrep is another mode of grep, with the-e option (enabling or shutting down one or more of the commands), enabling the extended Regular expression engine feature to use patterns that extend the regular expression character and the combination of

What are the steps required for an operating system to start up completely? Today, take CentOS as an example to explore the Linux startup process;First, the composition of the Linux system-kernel+rootfs (root file system)Kernel: Kernel for process

SED usage:Original link: http://www.cnblogs.com/dong008259/archive/2011/12/07/2279897.htmlSed is a good file processing tool, itself is a pipe command, mainly in the behavior of the unit processing, you can replace the data rows, delete, add, select

fuser FunctionFuser can show which program is currently using a file on the disk, mount point, or even network port, and give the program process details.Fuser Displays the process ID using the specified file or file system. By default, each file

Install SNMP Service on 1.linuxFirst step: Install the SNMP service on the company 192.168.100.171 Linux virtual machine.The second step: get the corresponding value through the nodes in the Host-resources-mib library.Step three: You can only pass:

File suffix name, Linux, and Windows cross-transfer filesFile suffix name650) this.width=650; "Src=" http://note.youdao.com/yws/public/resource/c6a80392fa24c6e8271ba7f041748a50/xmlnote/ 2c0c7cd8b4ea4b93a6ece403f4cdecc2/3100 "style="

Docker ~ Use the existing network in yml and the existing network in dockeryml Back to directory When deploying a highly available cluster using docker swarm, we may need to configure some services in the yml file, and these services may need to