Cloud Applications

Ubuntu accesses the Internet through proxy, and how to use apt-get to update. if your company's network architecture accesses the Internet through a proxy server, Ubuntu may encounter problems when using apt-get updates. Even if you have configured

Solve the problem of reading Chinese PDF from DocumentViewer in Ubuntu. 1. the problem is that when using DocumentViewer in Ubuntu or Mint (I used it), Chinese characters that need to be opened in Chinese PDF (no embedded font) cannot be displayed

Reading Notes on Linux kernel design and implementation (5)-main content of system calling: What is the implementation principle of system calling on Linux? a simple implementation of system Calling 1. what is a system call www.2cto.com? in simple

CentOS configuration VSFTP server [1] install VSFTP [root @ localhost ~] # Yum-yinstallvsftpd [2] configure the vsftpd. conf file www.2cto.com [root @ localhost ~] # Vi/etc/vsftpd. conf # Exampleconfigfile... CentOS configuration VSFTP server [1]

*. Files compressed by the Zcompress program ;*. bz2bzip2 compressed file ;*. files compressed by the gzgzip program ;*. the data packaged by the tartar program has not been compressed. the files packaged by the * .tar.gz tar program are compressed

View Log files in Linux 1. create the working directory mkdir-p/usr/local/viruswww.2cto. com2. download the Log analysis script cd/usr/local/logs written by laruence. View Log files in Linux 1. create the working directory mkdir-p/usr/local/virus

If you have the opportunity to build your own server in your local area network to configure a static ip address and dns, you must modify the ip address so that the ip address remains unchanged for future access convenience. Next, let's talk about

Linux exit X command line. In general, the shell operation we perform under the Linux GUI is not really a shell, it has been set up on Xwindow. If you want to switch to the pure command character console, the average person will think to switch Ctrl

Local rsync synchronization script (compression function not enabled )#! /Bin/bash # toquickbackthefiles! Www.2cto.com # xtao2012.10.8v0.1if [$ #-ne2]; thenecho & quot; Usage: $0 & lt; sourcedir & gt; & lt; remotedir & gt; & quot; echo & Local

A. subscription and update of RHEL are charged. you can purchase technical support services. Centos software updates are free of charge. B. RHEL has a Redhat trademark and Centos does not; c. The content of RHEL and Centos should be basically the

The following operations require root permissions Oh command: #/sbin/iptables-IINPUT-ptcp -- dport80-jACCEPT #/sbin/iptables-IINPUT-ptcp -- dport22-jACCEPT and then save: #/etc/rc. d/init. d/iptablessave Command: #/Sbin/ Iptables-I INPUT-p tcp --

1. to build an environment, you must use JAVA to develop Web applications. you must use a JAVA runtime environment and a development environment. Of course, databases are indispensable for Web development. Web programs must run without Web servers.

Abstract: The most common hard-to-decide problem that Linux users encounter when installing the Linux operating system is how to correctly evaluate the size of each partition to allocate suitable hard disk space. When a partition space is exhausted,

In the RedHatEnterpriseLinux5.0 server, after the NFS server, different computers in the network must first mount the file system before using the file system. You can use the mount command or add entry items to/etc/fstab. the entry items

1. mount the CD root @ instructor ~] # Cd/root/[root @ instructor ~] # MkdirDVDroot @ instructor ~] # Mount-tiso9660/dev/cdrom2DVD2. install vsftpd [root @ instructor ~] # CdDVD/Packages [root @ U 1. attach a CD Root @ instructor ~] # Cd/root/ [Root

TcpDump can completely intercept the "header" of the packets transmitted in the network for analysis. It supports filtering network layer, protocol, host, network or port, and provides logical statements such as and, or, not to help you remove

We recommend that you use $ {array} to read the variable www.2cto. comeg. declare-aarray [3] array [1] qarray [2] warray [3] e directly execute echo $ array [1] and the result is [1] echo $ {array [1]} The result is q. For the linux bash array

Using rsync + inotify for data synchronization I. What is rsync? It is a tool for file synchronization and data transmission in Linux. it uses the rsync algorithm to synchronize data between the client and the server, and between the master server

Puppet automated Nginx + Mongrel server load balancer configuration preface * as the company's application demand increases, the number of servers will also increase. when the number of servers increases, we will find that a puppetmaster is under

Ubuntuserver static IP address and DNS server set Ubuntu network parameters to be saved in the file/etc/network/interfaces. dhcp and dynamic IP address are used by default. Www.2cto.com: 1) edit/etc/network/interfaces1.1 )... The ubuntu server