Linux

Introductory Course:Intermediate:Beginner: System BasicsIntermediate: System Management, service security and service management, shell scriptingAdvancedMySQL Database:Cache&storagecluster:Clusterlb:4layer7layerha:Distributed:ZookeeperDistributed

File types for Linux Normal file Directory Files/Folders directory Equipment file Device Block Device File Block Character Device file code Piping file Pipe Connection File Link In a Linux

Touch Flename Create a new fileThere are three major features of cat:1. Display the entire file at once.2. Create a file from the keyboard.Only new files can be created and existing files cannot be edited.3. Merging several files into one file> is

1. Uninstall the JDK that comes with CentOSView the Jdk:rpm-qa|grep JDK installed on CentOSAppears as follows:Java-1.7.0-openjdk-1.7.0.45-2.4.3.3.el6.x86_64Java-1.7.0-openjdk-1.7.0.45-2.4.3.3.el6.x86_64Need to uninstall the JDK that comes with

Pwd Print the full filename of the working directory. Printing the current working directory-L,--logicalUse PWD from environment, even if it contains symlinks # show current path including link path-P,--physical # displays the current path instead

Accustomed to the integrated development environment on Windows, it is quite painful for C/D + + development on Linux.Maybe the big guys will batch, Linux has vim how powerful tools, but really do not use, radish vegetables bar.Just contact with

1. The command for user Switching in the Linux system is SU, and the syntax is:su [-FMP] [-C command] [-s Shell] [--help] [--version] [-] [USER [ARG]]Parameter description-F, –fast: Do not need to read the boot file (such as CSH.CSHRC, etc.), only

Linux system Boot Process1th Step Power-on self-testonce the server is powered on, the BIOS chip on the motherboard will check each hardware. After checking the hardware for no problems, the power-on task will be handed over to the next step. 2nd

Transferred from: http://blog.csdn.net/guowenyan001/article/details/12975221I. Analysis of core files1.1 Locate the core file directory and start Mycrash:mycrash1.2 Viewing the stack information for crashes: BT1.3 Disassembly of the crash point code,

Practice One, User Login system graphical interface with student2. Open a Bash3. Modify the student password to update the password to "T3st1ngtlme" (host letters and numbers)4. Display the current system time5. Display the current system

LINUX File System related commands:1. To view the file directory command: lsParameters: -A : list all files, including hidden files- H: display files in a way that is easier for humans to read- L: List Farm data strings, including properties and

Some personal reasons, time is more tense, study and work more hasty. Here are a few of my experiments. Other experiments and tutorials are scrutiny and must be mended.Harvest and experience:Learn to understand the simple and convenient command

First, the Linux system structureLinux is an inverted tree structureEverything in Linux is a file.These files are at the top of the system directory "/"/is the root directory/directory Below is a level two directory these directories are

Linux increases LV (logical volume) capacity2017-09-29-17:34:13Personal original Blog, reproduced please indicate the source.To view the relevant commands for a logical volume:LVS VGSCommand:[Email protected] ~]# VGSVG #PV #LV #SN Attr vsize

$ sync $ free-m Total used free shared buffers Cached mem:7752 1590 6162 2 274 457 -/+ buffers/cache:858 6894 swap:7887 0 7887 $ echo 1 >/proc/sys/vm/drop_caches release Pagecache $ echo 2 >/proc/sys/vm/drop_caches release dentries and

The file system is the basis for all folders and files, the disk is the basis of the file system, the file system is disk-based storage files.One, the Linux file system type1.ext Extended file system /ext2 level Two extended file system /ext3

Description: Now the hard disk basically does not have the IDE, so basically is starting from the SCSI start, the first hard disk marked as SDA, the second block is SDB, and so on. Then the first partition of the first hard disk is sda1, and so

1. Communication between Linux processesInherit UNIX interprocess communication: Pipeline signalAt&t:system V IPC Communication process can only be on a single computer: Semaphore Message Queuing shared memoryBSD: Creating a socket-based

Which of the following services are not required for Linux?Linux services is important for every Linux user. Disabling unnecessary services can make Linux run more efficiently, but not all Linux services can be disabled. After installing CentOs

Python set collection and collections series, pythoncollections 1. set: an unordered and non-repeating element set. The access speed is fast, which solves the problem of duplication;S2 = set (["che", "liu", "haha"])Add (): add an