Linux

Get Network Device MAC address:/* Create socket,ifreq*/int sock = 0x00; if ((sock = socket (af_inet, sock_stream, 0)) struct Ifreq mifreq; strcpy (Mifreq ifr_name, "eth0"); /* Get mac*/if (IOCTL (sock, SIOCGIFHWADDR, &mifreq) /* The MAC address is

Ruby Installation for Linux systems Ruby installation Package Download Address: http://www.ruby-lang.org/en/downloads/ Ruby-1.8.6-p111.tar.gz Unpack and install: Tar-xvzf ruby-1.8.6-p111.tar.gz CD

Now do a hot plug event on the USB port on the embedded platform. After my present analysis summary currently has the following method: 1, the regular examination/proc/scsi/scsi file This method can only be on the PC, but is not available on the

Kong is actually a ngnix, by adding plug-ins to the request to do the pre-processing, mainly authorized one. installation of Kong services; https://konghq.com/install/offers a variety of ways to install, It is recommended to install using Docker:

command to change permission properties chmod chmod is a command to change the permissions of a file or directory, but only the owner and Superuser root of the file has such permissions, there are two ways to change the permissions of a file or

DHCP service DHCP under Linux (full name Dynamic Host Config protocol): dynamically hosted Configuration ProtocolDHCP works at the OSI application layer and can help the computer obtain the configuration information from the specified DHCP server

What is history? ? In the cumulative use of Linux systems, we will enter many commands. And when we want to repeat the last command, we can view the commands we have entered and used by using the arrow keys to flip up. Have you ever thought about

Lead:whichWhereisLocateFindFindwhich can only query commands#which rpmWhereisYou can query the location of commands and configuration files#whereis rpm#whereis passwdWhatis#whatis rpm with the same effect as the following command, the query rpm

Use pyenv and vtualenv for environmental isolation, use jupyter to facilitate our learningNew userAll operations should be done in a separate user, not using the root useruseradd pythonPYENV installation PyenvIsolation of the development version and

One, the Linux CPU sizeCat/proc/cpuinfo |grep "model name" && cat/proc/cpuinfo |grep "Physical ID"Description: Detailed information about each CPU can be seen in/proc/cpuinfo under Linux. But for a dual-core CPU, you will see two CPUs in the Cpuinfo.

1. First, create the file as a mount pointmkdir/File name/2.mount/iso/rhel-server-7.3-x86_64-dvd.iso/dir/Mount the image under the/iso directory on the/dir/file 3. cd /etc/yum.repos.d/ 进入文件4. rm -fr *

SedSed means the stream editor, which is commonly used as a filter in shell scripts and makefile, which introduces the output of the previous program to the input of SED, which is converted to another format output through a series of editing

1, the configuration and use of Yum source (5 points)1) Create a local Yum source [base]Mount/dev/cdrom/mntName=local_basebaseurl=file:///mnt/Gpgcheck=02) Install the development pack GroupYum GrouplistYum Groupinstall Development Tools2,

I. INTRODUCTION of LinuxLinux is a free-to-use and free-to-propagate Unix-like operating system, a POSIX and Unix-based multiuser, multitasking, multi-threaded and multi-CPU operating system. It can run major UNIX tools software, applications, and

System InformationThe processor architecture of the Arch Display machine (1)UNAME-M Display the processor architecture of the machine (2)Uname-r displaying the kernel version in useDMIDECODE-Q Display hardware system

Original address: 70139714Operating system: CentOS 7OpenSSL version:openssl-1.1.0c.tar.gzOpenSSL is: https://www.openssl.org/source/1. Place the downloaded compressed package in the root directory/.2. Unzip under folder, execute the following

Introduction to 1.abAB is the abbreviation for the Apachebench command.AB is an Apache self-brought stress test tool. AB is very practical, it can not only the Apache server site access stress testing, or other types of servers can be stress testing.

Environment Arrangement:Configuring the source for installation 163[[email protected] ~]# cd /etc/yum.repos.d///创建备份目录[[email protected] yum.repos.d]# mkdir /etc/repo-bf//将原yum仓库的文件备份到repo-bf[[email protected] yum.repos.d]# mv *

Why should we understand the scheduling strategy of the kernel? Hehe, because it is worthy of our study, not a nonsense. The kernel scheduler is very advanced and powerful, managing a large number of messy processes running on your Linux, while

Consume Linux working Environment under Windows (WSL)Why are you so blind? Because recently changed a hard drive, made a dual system, and then habitually pressed ctrl+alt+t found nothing summoned out, and then suddenly remembered changed the