Linux

Linux uses shell programming to automatically switch to the IP address Ubuntu system. Because the IP addresses used in commuting are different, it is very troublesome to manually modify each time. Www.2cto.com made a batch processing by referring to

Shell scripts are not used for shell programming for a while, and are a little unfamiliar at first. I have reviewed it recently. Just take a note. If you can help people in need, you will be satisfied ...... Let's just move it to the topic. 1. shell

Linux Command-VIM basics 1. Basic operations: 1. Switch normal mode and edit mode with ESC and I keys www.2cto.com 2. X → delete a character of the current cursor. 3. : Wq → save disk + exit (: w save disk,: q quit) 4. Dd → Delete the current row

After configuring the Rsync server, you need to issue an rsync command on the client to back up the files on the server to the client. Rsync is a very powerful tool, and its commands have many special options. The following describes the options one

Every day, due to the same problem, N + alerts are triggered, which wastes Short-Message resources. Therefore, according to the information on the InternetThe alarm frequency is changed by adding the escalations. cfg configuration file

By default, the library function does not contain debugging information when debugging printf source code centos with gdb on centos. Therefore, gdb cannot be used to access the printf () function. Www.2cto.com solution: 1. install debugging

Linux serial port cannot receive 0x11. Solve the problem that c_iflag (termios member variable) is not effectively set in many popular linux serial port programming versions on the Internet, so there is no problem when transmitting ASCII codes,

1. Check whether the webshell Trojan is placed in the root directory of the site. check whether it is a PHP Trojan script based on the statement.# Find/storage/www/-name "*. php" | xargs grep-in -- color "eval ("# Grep-I -- include = '*. php'-r

CentOS 5.4 server configuration yum install Apache + php + Mysql + phpmyadmin-------------------------------------------------------------------------------- 1. Update the system kernel to the latest version.[Root @ linuxfei ~] # Yum-y updateAfter

Squid Performance AnalysisObtain information about squid execution1. If you do not know any information./Squidclient-h 127.0.0.1-p 80 mgr: 2. View General Runtime Information../Squidclient-h 127.0.0.1-p 80 mgr: info [Root @ bbs bin] #./squidclient-h

We have just installed a Linux system. To connect to the internal network, we need to use Huawei's H3C iNode. I just started using Linux, but I am not familiar with it.However, I was very excited about Linux over the past two days and I was very

Some Common commands are summarized as follows:1 InstallationInstall yum install allYum install package1 install the specified installation package1Yum groupinsall group1 installer group group12. update and upgradeYum update all updatesYum update

An error is reported when a sh is started In debian today, which leads to the formation of this article:   When using bash shell, we have the following scenarios: Env. sh -- define public variables Run1.sh -- Define the Running code Run2.sh --

1. Check whether the system kernel supports quotas.# Dmesg | grep quota2. Check whether the software supporting quota is installed in the system.# Rpm-qa | grep quota3. Enable the quota function for mounted partitions# Mount-o usrquota,

This section describes how to automatically start SVN when Linux is started. In the previous section, we will explain how to automatically start the SVN service when Windows is started. Through this section, you can make a comparison, let's take a

The following content is from the network and is saved as a backup:  Ssh supports port forwarding.Three powerful port forwarding commands of ssh: QUOTE:Ssh-C-f-N-g-L listen_port: DST_Host: DST_port user @ Tunnel_HostSsh-C-f-N-g-R listen_port:

Good, worth learning:It is easier to understand the Code directly. The original code is a bit problematic, and the path mentioned in the annotation is not a full directory, and the relative directory is also acceptable. After modification, I ran it

In the study of network protocols, we found that some protocol stacks of different operating systems are different. For Linux network protocol stack content, we will give you a detailed explanation. Now let's take a look at the specific

We should know some echo commands in DOS. We have also made a simple understanding of this aspect. If you have any questions, you can simply review the relevant content of the echo command. Here we will mainly reduce the price. linux echo commands

For DHCP, configuration is required in many cases in Linux. Here we will also explain the configuration of the Linux DHCP server. Let's help you understand this knowledge. The specific configuration is as follows: Linux DHCP server configuration 1.