Linux

This series comes from "Linux 101 hacks", the author also wrote other 101 hacks tutorials, read a few chapters, think skills are also good, very practical, do a summary collection.CdpathSet the base directorypwd/home/ramesh[[email protected]-db ~]#

When using a Linux system, consume CPU resources too high and use scripting to troubleshoot:1, real-time monitoring, once there is a high CPU consumption process, the program starts;2, then the process analysis, to draw the corresponding thread;3,

A. Before installing Linux, you need to plan for use understanding, you have to target districtions features, server software capabilities, future upgrade requirements, hardware scalabilityB. Disk partition planning for the installed host directory

security-enhanced Linux (SElinux)– United States NSA National Security Agency-led development, a set of mandatory access control systems to enhance Linux system securityPurpose: Mandatory access control system– integrated into the Linux kernel (2.6

Transferred from: http://www.cnblogs.com/kunhu/p/3699883.htmlMultiple user IDs and user group IDs are involved in the UNIX process, including the following:1. Actual user ID and actual user group ID: identify who I am. That is, the UID and GID of

DNS (domain Name System), a distributed database of domain names and IP addresses that are mapped to each other on the Internet, makes it easier for users to access the Internet without remembering the number of IP strings that can be read directly

3.3.1. About the concept of time 3.3.1.1, GMT (1) GMT is Greenwich Mean Time, which is the local area of Greenwich. (2) What is the meaning of GMT time? "Use Greenwich local time as global international time" to describe the time of global events,

Preparatory work:1.VirtualBox installation package, official download page .2.linux Mint image iso file, official download page .Installation process:1. Open VirtualBox and click New, select Expert mode in the popup screen, type select Linux,

1. Normal execution of SCP commands 2. Enter Ctrl + Z to pause the task 3.bg put it in the background 4.disown-h this job to ignore the HUP signal 5. Test session interrupted, task continues to run unaffected 1. Normal execution

Features of the 1>diff commandThe function of the diff command in Linux is to compare two text files on a line-by-row basis, listing their differences. It checks the given file for a system and displays all the different rows in the two files

Reference: http://blog.csdn.net/u011641885/article/details/495121991. Tools/MaterialsDesktop with wireless card (RT3070 wireless card with USB interface), wired network cardInstalling the Linux operating system, I'm using ubuntu14.042.

1 type of commandThe command types in     linux are divided into two classes, one for the command that comes with the shell, the internal command, and the other for the command program on the filesystem, which is the external command .         

Common commands:Zip:Package: Zip something.zip Something (directory please add-r parameter)Unpacking: Unzip somethingSpecify path:-d parameterTarPackage: TAR-ZCVF Something.tar SomethingUnpacking: TAR-ZXVF Something.tarSpecify path:-C

Embedded Linux and 51/430/stm32 Embedded development of the Difference and Association summary: Microcontroller series: 8051, MSP 430, STM32 f0-3 (ARM cortext m0-m3 series), etc.The main feature is that there is no memory management unit, no Linux

/etc/profile: This file sets the environment information for each user of the system, and the file is executed the first time the user logs on. and collects the shell settings from the configuration file of the/ETC/PROFILE.D directory.The English

Connect to a Linux instance from Windows using PuTTYAfter you start your instance, you can connect to the instance and then use it just like you would with a computer in front of you.AttentionAfter you launch the instance, it takes several minutes

Linux and Windows inter-pass files User profile and password configuration files User Group Management User Management 2.27 Linux and Windows interop files want to enable Linux and Windows to pass files, you can use Xshell, but

Analysis of five IO models and five I/O models Directory:1. Basics2. I/O model2.1 Blocking I/O model2.2 Non-Blocking I/O model2.3 I/O Multiplexing Model2.4 Signal-driven I/O model2.5 Asynchronous I/O model2.6 distinction between synchronous IO and

Linux cp/rm/mv mandatory overwrite, linuxcp1. cp/rm/mv force overwrite in Linux (1) and backslash (\) temporarily cancel alias [root@fz ~]# \cp filename new/filename [root@fz ~]#(2) unalias cancelling aliases Note: This is only temporary

Zabbix deployment, Originally published in cu: Reference:I. Environment Server: CentOS-7-x86_64-1511 Server IP: 192.168.11.252 Web Environment: CentOS-7-x86_64-1511 compilation nginx-1.9.12 + mysql-5.7.11 + php-7.0.4 Client: Win7 x86_64,