Linux

When we use LR for performance testing, we often have a need to monitor the OS's resource usage. For Windows system, this work is very convenient, directly in the LR Resource Monitoring window to add the need to be monitored by the machine name or

The Linux mkdir command is used to create a directory of the specified name, requiring the user who created the directory to have write permission in the current directory, and the specified directory name cannot be a directory already in the

The representation of signals in the kernel The actual execution signal processing action is called the Signal recursion (Delivery), the signal from produces to the recursion between the state, is called the Signal outstanding (Pending). A process

Using fork concurrent processing of multiple client requests and Peer-to-peer communication First, in the previous mentioned in the Echo client/server program, the server can only handle a client's request, how to service multiple clients at the

Using semaphores to implement process mutex examples and solve the problem of dining philosophers First, we talked about the process of communication between the process of the concept of mutual exclusion, the following write a program to simulate,

Log on to Linux instances Unlike the local operating system, there are also different tools for Telnet to the cloud server ECS instances. See the following table for how you log on to an instance. local OS instance OS

1 file and directory operation commands 1.1 File Content Query command grep, Fgrep, Egrep Syntax: grep[option [lookup mode] [filename 1, filename 2,......] Options:-e Each pattern treats as an extended regular expression -F Each pattern treats

The reason and solution of the problem of Linux virtual Machine network card losing under Hyper-V The trend of virtualization The company implemented virtualization, all using Microsoft Windows 2008 R2 Enterprise with Hyper-V to do cluster run

Regularly checking the health of your hard disk is something that every system administrator has to do. When it comes to the health of the hard drive, you have to say s.m.a.r.t first. Smart is a kind of disk self analysis testing technology, as

Whois Feature Description: Find and display user information. Syntax: whois [account name] Supplemental Note: The WHOIS directive will go to find and display the user related information of the specified account, because it is to network

Now the mobile phone users are very large, for mobile phone users have to consider the traffic, but the mobile network bandwidth is small, how the image compression on the internet is a problem, in Windows easy, there are many software, but there is

The Linux operating system is more stable than the Windows operating system, though. But this stability is relative. In other words, the Linux operating system will also have a temper. In some cases, the system's resource usage (including CPU or

Today installed VNC, solve a lot of problems, write a teaching post, to see the novice, if you encounter the same problem, you can quickly solve, without headaches or even give up. System environment vm+rhel5.1 [Root@localhost. vnc]# uname-r 2.6.

NIC binding mode altogether has seven kinds (0~6) bond0, Bond1, Bond2, Bond3, Bond4, Bond5, Bond6 There are three kinds of commonly used Mode=0: Balance load mode, there is automatic backup, but need "Switch" support and settings. Mode=1:

Today to share with you 10 years of Linux summed up the 11 Cool Linux Terminal Command Encyclopedia, through this article I'm going to show you a series of Linux commands, tools, and techniques that I'd like someone to tell me from the start, rather

Linux runs the flight control system, the banking system, and so on, and even runs the nuclear submarine system. Your lives, money, and deaths are in the hands of Linux, so we can make you live, and you can ruin your life and even kill you. You know,

One, I/O ports Port is the address of a register that can be accessed directly by the CPU in an interface circuit. Almost every peripheral is done by reading and writing registers on the device. The CPU sends commands to the registers in the

Recently learning Linux, finally on Linux with Apache built a git server, this record. Server: Aliyun Server Linux version: CentOS 6.5 Apache version: apache/2.2.15 git version: Git 1.7.1 Git access mode: Basic authentication based on HTTP (non-

INOTIFY+RSYNC+MUTT+MSMTP implement Linux file or directory Automatic Update and implement email to admin Implement real-time synchronization of files and monitor directory to send mail to admin requirements, need to update multiple servers, manual,

How the Linux system shuts down the SCP and SFTP commands. SFTP Introduction SFTP is a secure File Transfer protocol abbreviation for security FTP. You can provide a secure encryption method for transferring files. SFTP and FTP have almost the