Cloud Applications

This article mainly introduces the HTML table mouse drag/drop sorting function. For more information, see this article, for more information, see :

An index is a structure that sorts one or more columns in a database table (for example, the last name (lname) column of the employee table. If you want to search for him or her by the name of a specific employee, the index will help you get

Php simple verification code generation instance. The verification code can prevent some users from repeatedly submitting the code to guess the password or use brute force tools to guess the password. after the verification code is added, it makes

You may need to upgrade the Linux kernel for the following reasons. To try a new kernel module device driver, the new kernel function module must support the old version of the kernel. new vulnerabilities are found that the system is prone to crash

This method is useful in learning and work. The method is as follows: 1. first share the windows folder 2. use the following command in linux to mount the shared folder. Mount-tcifs // 192.168.1.102/studyshare/mnt-ousername = chocoleecifs indicates

Due to special requirements, I want a Linux host to always display a program. The Monitor cannot be shut down, sleep, or enter the screen saver mode. Environment: Ubuntu is installed in minimal mode with a lightweight desktop openbox (not gnome ).

If we manage enough servers, it is not difficult to enter the password every time. here we have a proxy method ssh-agent, the ssh-agent is actually a key manager. It can also be understood as a butler. we hand over the key to the butler to keep it.

1. it indicates that Solaris10 has strict default parameters for security reasons. prohibit root users from using ssh to log on directly. 2. Process 1. Use a non-root account and log on to ssh, su to root2. if you want to log on directly with root,

Operating environment: [root @ linuxidc ~] # Uname-aLinuxlinuxidc2.6.32-358.18.1.el6.x86_64 #1SMPWedAug2817: 19: 38UTC2013x86_64x86_64x86_64GNU/Linux status analysis: the system has two hard disks, the first hard disk 107 GB, & ldquo;/& rdquo;

Temporarily disable selinux: setenforce0 // Set SELinux to permissive mode to completely disable selinux: use root user, vim/etc/sysconfig/selinux, and change SELINUX = enforcing to SELINUX = disabled. It takes effect only after being restarted. Pro

We use Linux command lines frequently every day. although there are many materials on the internet about their usage skills, many of our friends have not tried it. Therefore, today's article will summarize this, hoping to help you. 1. display the

The df and du commands for viewing the file and folder sizes in Linux are very practical, and the total number of folders is counted as: du-shxmldb/ View the size of the linux file directory and the number of files contained in the folder Df

Because you often need to download and install software, and the software that provides download is usually packaged and compressed, it is very important to package the compressed tar command, I found an article on "example and explanation of tar

Due to limited time, I can write this blog for up to 30 minutes. It is only used for study notes, and the content will be as clear as possible. If you are not clear about it, you can beat me! Due to limited time, I can write this blog for up to 30

The following describes the syntax of common gzip options and the meaning of Chinese characters to help you understand your memory. Don't let the little dummies put so many things that you don't understand. This evening, I watched laruence's private

Linux practice engineer study Note 8: Lvm Logical Volume Manager if the system is using sdb, restart the system to re-read the partition table information of sdb Physical volume of PV (physical volume)VG (Volume Group) Volume GroupLV (Logical Volume)

Crontab is a common tool used in linux to set periodic command execution. This tool can help us plan tasks, which is very useful for system administrators. In development programs, I also use this tool to regularly back up databases and program code

Tcpdump is a commonly used packet capture tool in linux command lines. it records the commonly used methods and the testing machine system is ubuntu12.04. Tcpdump is a commonly used packet capture tool in linux command lines. it records the commonly

Tar is a compression and packaging tool on Unix and Unix-like systems. you can combine multiple files into one file. the packaged file name is also "tar ". Currently, tar file format has become POSIX standard, initially POSIX.1-1988, is currently

Download the latest version of linuxnc (netcat) source code and detailed explanation of nc commands to specify the file name, dumping the transmitted data into a hexadecimal code and saving it. Linux nc Command detailed explanation