Linux

I/O optimization1 Opening NoatimeMethod: Modify/etc/fstab2 adjusting pre-readMethod: View sudo blockdev--GETRA/DEV/SDASet sudo blockdev--setra 4096/dev/sdf (4,096 sectors, or 2M)3 Adjusting Virtual memory parametersA method: View

Share a recently lost cell phone heart stuffed into the explosion of me, and now the poor only left full of wisdom, well, I want to start learning.First of all, build a linux0.11 system environment and post the result map.From power-on to the

Requirement: The compiler version is 4.4.6To view the current cross compiler version:arm-linux-gcc-vIf it is not a 4.4.6 compiler, you need to modify two files:Vim/home/tarena/.bashrcDelete the last line:Export PATH =/opt/arm-2009q3 ...sudo

8.1 Versions of shared librariesUpdates to shared libraries can be divided into two categories:Compatible updates. All updates are only added to the original shared library, and all existing interfaces remain intact.Incompatible updates, shared

The first is implemented in the Linux underground, creating four files, the main implementation process:Register-Login-deposit-withdraw-transfer-Change password-check personal information-Show all accounts-exit systemDon't say much nonsense, look

Common directivesLS Display file or directory-l list File details L (list)-a lists all files and directories under the current directory, including Hidden A (all)mkdir Creating a Directory-P Create directory, if no parent directory, create p (parent)

This article is written in November 13, this is only a record of the knowledge that has been covered in this area, may be useful for some knowledge of the futureFor the platform bus model, you can refer to a previous article on the Linux driver

Take the CentOS system as an exampleFirst, the CPUCat/proc/cpuinfoHere is my CPU information, with 4 messages stating there are 4 logical CPUs, but each physical ID is the same, stating that there are only 1 physical CPUs.1. The "Physical ID" and

Yesterday did not bring a computer to work, the company's computer is windows, the command line is not used to, simply installed a Linux virtual machine, reluctantly a use, but also save to run around behind the computer. So the problem comes,

1. Set password for root account: sudo passwd root2. Switch to the root account: Su root3. Sync data from memory to hard drive: SyncRestart: rebootShut down the system: halt or Poweroff or shutdownShutdown after 10 minutes: shutdown–h 10System

AIX host FTP to Linux server1. Shell Script test.sh#!/usr/bin/kshftp-nOpen 192.168.89.10User Oracle OracleBinaryCd/backup/exp/operationLcd/oratmp/expPromptMput *CloseByeEof2, the implementation of the foot of this newspaper wrong$./test.sh? Invalid

The SED command is used to process the text, and it is to process the text in line, while the SED handles the text in the pattern space, the text content in the output mode space after processing, so if you use the SED command to process a file, it

When the size of the disk exceeds the standard, there will be alarm prompts, if you know the DF and du command is a very wise choice.DF can view the first-level folder size, usage scale, file system and its hang-in points, but there is nothing to

Linux and Windows file garbled problems Linux and Windows file garbled problems table of Contents 1. Introduction 2. Iconv detailed 2.1. Iconv–help View Help 2.2. Example 1 3.

Linux iostat command learning notes1. Command Introduction Iostat (I/O statistics input/output statistics) command to monitor system disk operation activities. It reports disk activity statistics and CPU usage.2. Usage Iostat [Option] [ []3.

Mount the CD-ROM using the mount command in CentOS7 When using the operating system, we sometimes use optical disks and optical drives. Unlike windows's access to the content of a CD, if you want to access the CD in CentOS7, You need to attach the

How to install Windows 10 and Ubuntu 16.04 LTS In UEFI ModeI. cutting-edge installation of Ubuntu and Windows dual systems, many children's shoes have encountered problems. Here we will organize a simple tutorial Based on the small series of

Build a Git server Repository Git can be used to easily build a Git server repository. The principle is to log on via ssh. The advantage of this method is that it is simple.Procedure: #1. Install git: sudo apt-get install git2. Create a git user to

Website stress testing tool webbench instructions1. webbench introduction Webbench is a famous website stress testing tool developed by Lionbridge (http://www.lionbridge.com). Its help files and documentation can be viewed at

Cacti installs spine to obtain monitoring data every minute Cacti installs spine to obtain monitoring data every minute (5 minutes by default) Server Configuration # Install the dependency package yum-y install mysql-devel net-snmp-devel