Linux

If a child process is preceded by a parent process, the wait () function is invoked by the parent process and the wait () function is not invoked to produce two different results:--> If the parent process does not invoke the wait () and the Waitpid (

Lsof (list open files) is a tool that lists the current system open file. In a Linux environment, everything exists as a file, and access to network connections and hardware can be accessed through files as well as regular data. So, such as

As we all know, Linux is higher than the safety factor of windows, but it is a good habit to update it frequently (at least recently, a lot of security vulnerabilities about SSL deserve attention!). , but when running Apt-get update refresh source

BodyIn the terminal input:Ls-l xxx.xxx (xxx.xxx is file name)Then there will be similar messages, mostly these:-rw-rw-r--The following figure: A total of 10 digitsWhere: The front one-represents the type, if it is a directory, the front one is DThe

In fact, in many small companies and small businesses, in particular, e-commerce and electronic advertising-related sites, their site also requires a load-balanced high availability of the Linux cluster, but because of the cost constraints, the boss

Applicable system: Linux (Redhat, Centos,debian,ubuntu) * Linux Server data disk is not partitioned and formatted, you can follow the following steps to partition and format the operation. The following operation will divide

Xen architecture of the VPS typically not less than 10G (there are also special examples), generally based on the Xensystem panel VPS default Mount 10G hard disk (the first disk), the remaining capacity (the second disk) need to be mounted manually.1

I. Introduction of APF Firewall APF is a Linux under the Iptables firewall, by the R-FX networks development and maintenance, the implementation code is basically shell. Personally think this is the most easy-to-use and powerful firewall script

One, install and configure on the VPS The following actions are performed in SSH. Check to see if the Make module is installed, most of it is installed, no, first install make module: The code is as follows Copy Code

Figure 1. Architecture of Linux File system componentsThe user space contains applications (for example, the users of the file system) and the GNU C Library (GLIBC), which provide a user interface for file system calls (open, read, write, and close).

Let's start with a simple FTP download script.Ftp-i-nOpen 14.2.33.211User ETL ETLCd/etlfile/ftpfileLcd/etlfile/getfileBinaryPromptMget *PromptCloseByeEofFTP Installation section, the following steps:You can install FTP directly using the Yum command#

Embedded Linux Chinese station found many Linux beginners in learning the knowledge of Linux graphics will encounter some concepts, such as: X, X11, Xfree86, WM, KDE, GNOME, QT, qt/e, Qtopia, DIRECTFB, Framebuffer, graphics acceleration drivers, and

We know that in the Linux system in the/TMP folder inside the file will be emptied, as to how long to be emptied, how to empty, may not have a lot of knowledge, so, today we will analyze one of these two problems.In the rhel\centos\fedora\ system

Use entire drive|replace existing Linux System|use free space is installedLinux, when it comes to splitting the hard drive and formatting the hard drive, there are a couple of options, and what they mean and what will be done is:( 1 ) Use entire

Source: Three ways to connect VMware virtual machines (detailed commentary)VMware three network mode networkingLet's start by talking about several VMware virtual devicesWhen a VMware virtual machine is installed, two more virtual network cards are

DNS CacheWhat is a DNS cache?The dns  server can cache  DNS  records received from other  DNS  servers.   can also use caching in  DNS  customer service as a way to cache information cached by the  DNS  client during the most recent query.   Overall

LVS is a short name for Linux virtual server, the Linux web, is a free software project initiated by Dr. Zhangwensong and is now part of the Linux standard kernel. Prior to the Linux2.4 kernel, the LVS had to be recompiled to support the LVS

Tar zxvf phddns_raspberry.tgzTar default unzip to current directoryParameters:At least one of the following parameters must be run when you run tar-A,--catenate,--concatenateMerging an archive with an existing archive-C,--createCreate a new

Use of Git GuiGuideIf you have learned a lot about using Git command line operations. You have learned to operate on local files, connect to your repository through the network, and cooperate efficiently with others. But the story is not over yet;

Unified alarm platform and alarm Platform I. Summary Due to the rapid development of the Monitoring Service, there are many kinds of alarms and the alarm records cannot be queried, a platform is required to solve the issue of alarm display and query.