Linux

I believe that most people who use emails will receive a lot of spam every day. As a network manager, I receive more than hundreds of spam mails every day, so it is imperative to prevent spam. I. Environment Description The server of the

# copy files from the rhel.iso image to system if [ ! -b /tmp/cdrom ];then echo "make cdrom node using mknod" >> /root/ins.log # get the major number

This article introduces the shell commands in linux from five aspects, including Shell variables, basic structure of Shell, return value of Shell functions, detailed description of Shell functions, and special variables in Shell, which may be

1. There are five methods to terminate a process: Exit normally: Return from main Function Call exit Call _ exit Abnormal Exit: Call abort Terminated by Signal 2. Differences between exit and _ exit: main ( Running result:

If you don't want to talk about it, first glance at my command line prompt (a little big ): The command line in the figure is as follows:Calendar [date of the Gregorian calendar/date of the lunar calendar]Else [number of directories under the

I. MPS queue read/write rules When no data is readable O_NONBLOCK disable: The read call is blocked, that is, the process is paused until data arrives. O_NONBLOCK enable: The read call returns-1, and the errno value is EAGAIN. When the MPs

IsSmall and medium-sized enterprises customize a set of open source software solutionsStarted to build a website. 1. Install squid $ Sudo apt-get install squid-y Note: After installation, you can start/etc/init. d/squid3 start, but the default

Common threads: Awk by example, Part 3 String functions and...Check? Summary: In the last part of the awk series, Daniel describes important string functions of awk and shows you how to write a complete check Settlement Program from the beginning.

1. Paging and page tables First of all, I believe that many people are familiar with the concept of paging. Here I want to talk about the idea of "splitting". I have been studying computers for more than two years, my biggest feeling is that

Cause: Recently, google's awk tutorials go to a beginner awk series on IBM developerworks, written by Daniel Robbins, founder of Gentoo Linux many years ago. I think it is quite good, but the Chinese version on developerworks is short of a few

The Linuxf release version used by the author is Centos6.4. The following methods are theoretically valid for both Fedora and Red Hat: After the NFS service is set up, use the following command to mount it:   # Mount-t

I can see this when I try typing (this is my hand ~) -----------------------Examples: square roots by newton's method----------------------Procedures, as introduced above, are much like ordinary mathematical functions. they specify a value that is

First, you must enable the data forwarding function in linux. The steps are as follows: 1. vi/etc/sysctl. conf 2. Change net. ipv4.ip _ forward = 0 to net. ipv4.ip _ forward = 1. 3. sysctl-p (this command takes effect for the data forwarding

For Network Interconnection engineers, it is very important to establish an Internet dynamic route. This requires not only understanding the concept of routing, but also how to put it into practice. Currently, network devices are provided by large

The server setting of the Cisco router log is a high-end problem. In the process of using it, we need to constantly find a better way, but for linux, many people are not very clear about it. How does one set linux to a Cisco router log server? To

I found that some faults may occur during the Linux system startup, which causes the system to fail to start normally, I have written several fault repair cases for single-user application mode, GRUB command operation, and Linux rescue mode to help

1. I installed Ubuntu in a pure English environment. First install Fcitx: Sudo apt-get install fcitx im-switch Setting Process: Sudo im-switch-s fcitx-z all_ALL 2. edit/etc/gtk-2.0/gtk. immodules (if any)

You can use the bridge and nat in fedora to simultaneously enable the virtual machine to access the network file system and virtual machine. Nat: Share the ip address with the host. The procedure is as follows: 1. Select nat In the Ethernet option, 2

If the linux system is installed in the VM environment and you want to adjust the system resolution, you only need to install VMware tools. Generally, VMware tools needs to be installed on a virtual machine. If you want to complete this job in

Bkjia.com tutorialThe following two conditions must be met for Remote Boot:DomainNetwork, and you know the MAC address of this machine. Secondly, your network card supports the network wake-up function. Of course, most network cards now support the