Linux

First, rsync1. What is rsyncRsync is a remote data synchronization tool that enables data synchronization within or across hosts. With the service runtime listening on the TCP 873 port, the rsync algorithm can reach only the part of the file change,

When the Linux system starts, we can see that many service programs are started one after another (that is, those with a blue [OK] in the back), these programs run in the background for us to use the computer played a very important role in this way

Note: Not original, mostly excerptsEnglish Full Name: list is the meaning of lists.1. Command formatls [options] [directory name]2. Command functionList all subdirectories and files in the destination directory3. Common parameters-A, –all lists all

Problem:Fatal error:call to undefined function think\imagettftext () in/var/www/webreg/thinkphp/library/think/ Verify.class.php on line 143See Phpinfo () and learned that GD does not have freetype supportSolve:First install freestyle,php-gd Ensure

1.1 Experimental Environment:Server operating system: centos6.7=192.168.24.37Client operating system: centos6.7=192.168.24.36Virtual machines: VMware Workstation1.2 Experimental background There are many ways to remotely replicate files from one

Linux Common service port 2008-01-21 16:24:52Category: LINUX go             Linux Server starts with a number of system services that provide local and network users with a system-functional interface for Linux that is directly

The relationship between virtual memory and swap partitionsFirst, these two concepts correspond to Windows and Linux respectively, namely:Windows: Virtual memoryLinux:swap partitionWindows uses virtual memory even when physical memory is not

in Linux, the network is divided into two tiers, namely the Network Stack protocol support layer, and the device driver layer that receives and sends the network protocol. Network stack is a separate part of hardware, mainly used to support TCP/IP

This article extracts the "Embedded Linux Drive template simplicity and engineering practice" a book "Development and commissioning technology."Linux is powerful, there are so many open source projects can be used. It is often very much needed to be

In Linux, the/etc/fstab file is a disk mount problem, if the file is accidentally modified, or deleted, it will cause the system cannot be restarted. Because the/etc/fstab file is a record of the disk mount information, if there is a problem with

Preface:I am currently in the development of Android, but also in an information security company. The company's main is to do in the virtual machine running products, and the cloud computing, thought is to go to the cloud computing. Self-feeling

1. View the SSH client versionSometimes it is necessary to confirm the SSH client and its corresponding version number. Use the SSH-V command to get the version number. It is important to note that Linux generally comes with OpenSSH: The following

Socket Chapter Reading notesHighly recommended Linux/unix system programming manual, known as the God book Beyond Apue.Backlog meaning#include int listen(intint backlog)The backlog parameter limits the number of pending connections (not accept), and

Cost of LocksThe cost of locking is huge, especially for multicore multi-processing.The introduction of multi-processing, itself is to be parallelized processing to improve performance, however, because of the existence of a shared critical section,

Iptables is a user-space tool that configures firewall rules in the Linux kernel, which is actually part of the NetFilter framework. Probably because Iptables is the most common part of the NetFilter framework, this framework is often called

Linux setup program boot, linux setup program There are three methods available on the Internet. Here are only the simplest ones -- 1. Modify the/etc/rc. local file: 1) switch to the etc directory under the command line, and enter the command:

Use valgrind to check memory, valgrind to check memoryTo do well, you must first sharpen your tools. Valgrind is a free and excellent toolkit. Most people usually use valgrind to detect memory problems, such as memory leakage and out-of-bounds. In

What is logical partition management LVM and how to use it in Ubuntu? Logical partition management (LVM) is a disk management option included in every mainstream Linux release. Whether you need to set a storage pool or just want to dynamically

Use bosh-lite to build a standalone cloudfoundry environment on centos7ubuntu15.04Bosh-lite IntroductionBosh-lite is an experimental tool for deploying cloudfoundry on a single machine. It is used by developers for poc verification. Bosh-lite

Linux Tutorial: Enable Multiple labels on the GNOME terminal of Ubuntu 15.04 Q: I used to enable multiple tags in gnome-terminal on my Ubuntu Desktop. However, after upgrading to Ubuntu 15.04, I can no longer open new labels in the gnome-terminal