little leaps learning system

When I was working, I was very happy to build a RAC learning environment by using three broken PC machines, I have also created a learning environment for myself. I'm so happy! An error is reported on a host, such: I thought it was over. So I restarted the system. After about one minute, I logged on to the system. The

is neat all of a sudden.Interested partners can give it a try oh, wonderful to say. Second: The gaze of the CodeStaring is when you are typing code. A person who knocks on a code gives an explanation or hint of a statement, program segment, function, and so on. Can improve the readability of the program code, in order to facilitate future references, changes.Staring is an explanatory text, when executing a program. Will be skipped by the program, do not do processing. In the understanding of sm

My path to C language learning-initial Linux (dual system mode)The first time I heard that Linux was released at Microsoft and no longer maintained the WINDOWXP system, when the headlines were turned on, Linux almost dominated the headlines and, curiously, Baidu had Linux (Linux operating system is a cloning

Recently began to learn WCF-related knowledge, although the actual work of using the company's own set of SOA system, but Microsoft's set of service architecture has a lot of reference. In addition to some of the basic uses of WCF, relatively complex content has distributed transactions and communication security, etc., but the basic is associated with the ws-protocol cluster. In order to elicit transaction processing in WCF, today gives priority to t

I have been learning php for a while, but I have never had a system plan. I suggest you learn php from February August to the present, basically, they all look at the video and practice it on their own! Finally, I went to a company to develop the backend of some small websites. if I don't understand it, I went online to find information or came up here to ask! So far, some basic knowledge has been

The idea of a neural network is to train a non-linear function, which is usually applied to the following situations: When many factors are determined and complex, for example, the fire of a fire building may increase, which may be determined by the wind power at that time. , Temperature, surrounding environment, house structure, house facilities, etc. When we cannot get a correct answer based on these parameters In this case, we can use neural networks to construct training parameters and re

Inode record file attributes/permissions and other data, each inode size is fixed to 128bytes; Each file consumes only one inode, so the number of files the file system can build is related to the number of inode.7. The actual data of the block record file of the file, the block of the directory records the comparison table of the filename and its inode number.8, log (joural) file system will be more than

system is stored here/var/log/secure: Security-related log informationThe syslog configuration file above RHEL5.8 is as follows:650) this.width=650; "title=" A.png "alt=" wkiol1pngzaydg4paaj4iwyfyru055.jpg "src=" http://s3.51cto.com/wyfs02/M02/ 45/52/wkiol1pngzaydg4paaj4iwyfyru055.jpg "/>Example: Examples of these definition formatsMail.info/var/log/maillog #表示将与邮件有关的, level defined as info and aboveAuth.=info @10.0.0.1 #表示与auth相关的, the level is defi

Virtual file systemVirtual file system: The kernel subsystem VFS,VFS is the abstraction layer of the file system in the kernel, and provides the file system related interface for the user space;With a virtual file system, programs can interact and operate in different file systems using standard Linux file

system uses a struct FILE_SYSTEM_TYPE structure to store it as a node and form a linked listThe meaning and purpose of VFS: supporting a wide variety of file systems, the kernel processes these file systems in a consistent manner, making them transparent to usersSpecial File System/procwindows of the Linux kernel exist only in memory and do not occupy disk spaceTypical information:Process information: Proc

repair command: FSCK partition device file name Show disk status command: DUMPE2FS partition device file name mount Command:Query System mounted devices: Mount-lAuto Mount: mount-a--automatically mounts according to the contents of the profile/etc/fstabMount command format: Mount [-t file system] [-l volume label name] [-o Special Options] device file name mount pointmounting discs and USB sticks:Mountin

actions in topM: Sorts based on the size of the resident memory.P: Sorts according to the percentage size of CPU usage.T: Sort by Time/cumulative time.1: Can toggle display of all CPU usage statusQ: Exit TopTOP-BN1 output all information at once, static displaySAR command Monitors system Status4 SARIt can monitor all the resource status of the system, we mainly use it to monitor the network card.1 Viewing

=" https://static.oschina.net/uploads/space/2017/0813/121606_Ku2h_3311226. PNG "width=" 504 "style=" Border:none;margin:auto;height:auto; "/>Life is like mountaineering, not everyone can climb to the top of the mountain, but climb it is good; not everyone must climb to the top of the mountain, but must be step by step. Learning is also a truth, to step by step, in the course of learning, we should pay more

I have been learning PHP development, a period of time in the 51cto to see the private library Sun Shenli Teacher's video, downloaded his small fresh BBS system development video learning. Now collect the good use of the inside here.After looking at this video, you should understand the whole Web project development process.Public configuration parameters:Date_de

source and continue clicking forward650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/58/1B/wKioL1SpTymgQaXSAABQGJfIHJE035.gif "style=" float: none; "title=" Image 014.gif "alt=" Wkiol1sptymgqaxsaabqgjfihje035.gif "/>650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/58/1F/wKiom1SpTm3APp7mAAA0GlFkhYg117.gif "style=" float: none; "title=" Image 015.gif "alt=" Wkiom1sptm3app7maaa0glfkhyg117.gif "/>OK, click Start to get to the interface.650) this.width=650; "src=" Http://s3.51cto

I was in a junior high when I was with Linux. I was familiar with Linux when I stumbled across "Linux should learn". becauseI'mis an electronic information engineering major, in the senior year opened an embedded curriculum, embedded system is a special computer system, as part of the device or equipment. All devices with a digital interface, such asVideo Recorder,Carand so on, all use embedded

: Mount in the format: Mount-t file system type mount pointMount points can be set as needed.(1) Mounting floppy diskMount-t Msdos/dev/fd0/mnt/floppy(2) Mounting USB stickBefore mounting the USB flash drive, first confirm the USB device name, enter in command line: Dmesg|more to view, general device file is/DEV/SDA1, then set up mount point: Mkdir/mnt/usb, then mount:Mount-t Vfat/dev/sda1/mnt/usb(3) Mounting discsMount-t Iso9660/dev/hda/mnt/cdroom orM