different learning management systems

: The installation location of the third-party application;/SRV: Data used by services running on the system;/tmp: temporary file storage location;/usr:universal GKFX, read-only data;/var:variable Data files/proc: A virtual file system for outputting kernel-related process information;/sys: A virtual file system for outputting information about hardware devices on the current system;/selinux:security the storage location of information such as enhanced linux,selinux related security policy;[[ema

# description:saves and restores system entropy pool for \# higher quality random number generation.Examples of Use:Chkconfig--list #列出所有的系统服务Chkconfig--add httpd #增加httpd服务Chkconfig--del httpd #删除httpd服务Chkconfig--level httpd 2345 on #设置httpd在运行级别为2, 3, 4, 5 in the case of On (open) stateChkconfig--list #列出系统所有的服务启动情况Chkconfig--list mysqld #列出mysqld服务设置情况Chkconfig--level mysqld on #设定mysqld在等级3和5为开机运行服务,--level 35 means that the operation is performed only on levels 3 and 5, on means start, off

hashvalue:uint4bThe first element still points to a object_directory_entry structure, and object is its connected objects. You can see that the catalog item can be inserted into the object directory in conjunction with a specific normal object, or you can combine it with a Directory node object to form a directory. analysis of the above diagram:The root node is a directory object, the body is a hash table, here only shows the two of the queue, each queue of directory items (objects) have

. Implementation phase:With the features of loose coupling of Noahweb program, you can develop the project in horizontal "incremental iteration" and multi-person parallel cooperation in this phase.Incremental iterations allow your end users to feel the system from different points of view and understand the details at multiple stages of coding. Use the iteration to guide you through the real needs of your users. Your users will still have access to at

recommendation based on Association Rules (Association rule-based recommendation) is based on the association rules, the purchased goods as the rule head, the rule body is the recommended object. Association rules mining can find the relevance of different products in the sales process, has been successfully applied in the retail industry. Management rule is in a transaction database in the purchase of a s

hardware design is generally customized by other companies. This is called "OEM". All of them are general-purpose hardware. We just need to design the software and turn it into our own product. 4) interest. This is the most important thing. Disadvantages of developing embedded software are: 1) The entry point is relatively high, and the technologies used are often difficult. If the hardware and software foundation is poor, especially the operating system software skills are not deep, it may no

customizing the configuration requirements for each virtual machine (referred to as virtual machine), his overall structure is shown. 650) this.width=650; "title=" A.png "style=" Float:none "src=" http://s3.51cto.com/wyfs02/M02/47/0F/ Wkiom1p2bufb-wsyaafd6z9gdn4037.jpg "alt=" wkiom1p2bufb-wsyaafd6z9gdn4037.jpg "/>in our daily life there are people who have heard of virtualization, virtualization is a course, in our Linux On the journey of learning it

Linux Systems-User Management-Administrator authorization The root privilege of a Linux normal user 1 often used to manage some services need some permissions, you can edit in the Visudo User name Host address = absolute path (to restrict permissions so that users can execute the program only under these paths, without root privileges) 2 can be used for Web site managem