Linux

Access to the server through SSH, it is inevitable to use compression, decompression, packaging, unpack, etc., this time the tar command is essential to a powerful tool. The most popular tar in Linux is though small, spite, and powerful. The tar

The chmod command is used to change access rights for Linux system files or directories. Use it to control the access rights of files or directories. There are two ways to use this command. One is the text-setting method that contains the letters

Environment RedHat Linux 9 + vwware 8.0 + SSH 3.2.9 + Putty 0.62 Problem Pack compressed war, unpack war packs, and JAR commands under Linux Solve Pack the files in the Project_a folder into Project.war 1. Packing JAR-XVF

Task requirements Research and Development Department developers David and Peter belong to group A; The Administrative department personnel Jack and Mike belong to Group B; 1, the establishment of a shared directory "/project_a", the directory

SU's usage: Switch user The usage # SU [l] User name [] can be abbreviated or not written. Change Password # passwd hit the return ligatures two times new password on the line, pay attention to the complexity of the degree of Command command

Both the exit and _EXIT functions are used to terminate the process. When the program executes to exit or _exit, the system stops all remaining operations unconditionally, clears various data structures including PCB, and terminates the operation of

Interprocess communication must be provided through the kernel channel, and there must be a way to identify a channel provided by the kernel in the process, which is identified by an open file descriptor. If several processes to communicate with

First, in order to understand the signal, start from our most familiar with the scene: 1. User input command to start a foreground process under the shell. 2. The user presses the CTRL-C, this keyboard input produces a hardware interrupt. 3. If

First, the concept of the terminal In the UNIX system, the user obtains a shell process through the terminal login system, this terminal becomes the Shell Process Control terminal (controlling Terminal), the control terminal is the information

First, zombie process When the child process exits, the kernel sends a SIGCHLD signal to the parent process, and the child process exits as an asynchronous event (the child process terminates at any time the parent process runs) When a child

The following are some steps to help you set the date and time under Linux, and include a little ntpd time synchronization. The special reminder is that in the release version the limit is Red Hat series, including Fedora,centos,redflag,unbreakable

Introduction: This article discusses three main executable file formats under the Unix/linux platform: a.out (Assembler and link editor output assembler and link editor outputs), COFF (Common Object File format Common Object File format), ELF

For network interconnection engineers, it is very important to establish an Internet dynamic routing. Not only do you need to understand the concept of routing, but you must also know how to put it into practice. For now, network equipment is mainly

In many network applications, FTP (File Transfer Porotocol) has a very important position. A very important resource in the Internet is software resources. and a variety of software resources are mostly placed in the FTP server. It can be said that

Recently lazy to do operation Dimension Automation, see the marketing department colleagues in the call public platform interface, feel very interesting ~ want to try this management simple management Linux host, and push alarm information. It is

Reprint Address: http://www.cnblogs.com/diyunpeng/archive/2009/11/11/1600886.htmlLinux has its own set of complete boot system, seize the Linux boot context, the Linux startup process will no longer mysterious.In this article, it is assumed that the

Ffmpeg-y-F x11grab-s 1920x1080-framerate 30-i: 0-f pulse-i alsa_output.pci-0000_00_1b.0.analog-stereo.monitor-vf ' setpts= (Rtctime-rtcstart)/(tb*1000000) '-af asetpts=n/sr/tb,apad-shortest-c:v libx264-profile:v high444-preset:v Veryfast-qp:v

Iptables/netfilter's Network firewall The function of the network firewall is simply to say that all incoming messages through this machine are in the local routing decision, the destination address is not the native, need to help forward to

[APUE] Process Control (lower) and apue Process Control1. Change the user ID and group ID You can use setuid to set the actual user ID and valid user ID. You can use the setgid function to set the actual group ID and valid group ID. # Include #

Centos7.2 install dcos1. Preface For the container orchestration system, we mainly studied kubernetes some time ago. Now we need dcos in the lab. Therefore, we have built this system on the lab cluster. the dcos version is 1.8.6.The system used is