Linux

In Linux development, there are a few things related to performance. The technical staff are very concerned about the process, CPU, mem, network Io, and disk Io. This document is intended to be detailed and thorough. Analyzes the file IO details.

Before starting, make sure that the virtual machine is turned on and the operating system is running. My virtual machine is installed with VMware.7.1.1 1. Select VM> install VMware Tools on the host. If you have installed earlier versions of

There are two methods: I. dd Dd If =/dev/Zero of = 1t. img bs = 1g seek = 1024 COUNT = 0 BS = 1G indicates that 1G data is read and written each time. Count = 0 indicates that 0 times are read and written. Seek = 1024 indicates that 1024 blocks are

I have sorted out some problems and solutions for porting linux 32-bit to 64-bit, and shared them with you for your reference! 1. Data truncation: The operation of long type variables (Value assignment, comparison, shift, etc.) is generated. Long is

Http://tech.ccidnet.com/art/2583/20071024/1252121_1.html   One of the most troublesome problems in C/C ++ development is memory management. Sometimes it takes several days to find a memory leak or a memory access out of bounds, if there is a tool

Shell and export commandsAfter a user logs on to Linux, the system starts a User Shell. In this shell, you can use shell commands or declare variables, or create and run Shell script program. When you run the shell script program, the system creates

Linux zip command detailsFunction Description: compress a file.Syntax: zip [-acddffghjjkllmoqrstuvvwxyz $] [-B ] [-ll] [-n ] [-T ] [-] [compressed file] [file...] [-I ] [-x ]Note: Zip is a widely used compression program. After files are compressed,

# Include   Int getopt (INT argc, char * const argv [], const char * optstring ); Extern char * optarg; Extern int optind, opterr, optopt;   Description: The getopt () function parses the command line parameters. The first two parameters -- argc

1. inotify Main Functions It is a mechanism used by the kernel to notify user space program file system changes. As we all know, Linux desktop systems are much less satisfactory than Mac or windows. To improve this situation, the open-source

This part of content: Preface What is scratchbox? Scratchbox Composition Prerequisites for Installation Automatic Installation of scratchbox Automatically install the maemo SDK   PrefaceThis section describes how to install the development

GPE phone edition, the Linux mobile platform focuses on providing some important frameworks rather than general applications. As we all know, the framework is on the middleware layer and is the basis of application. Like the high-rise buildings in

Document directory 0.1 examples in this article: hello3 1.1 download and install gladewin32 1.2 library file and PKG-config 1.3 GTK Project 2.1 programs 2.2 outside of Program Linux journey (2): Hello, GTK (I) 0 Overview There are a lot of

  Briefly describe cygwin installation and configuration, as well as the entry-level tutorials. First, download setup.exe to the http://www.cygwin.com, and then create the installation directory, such as X:/cygwin, put setup.exe to this

Collection of common Macros in Linux Kernel I. Interruptions:   1. interrupt type: Use # define sa_shirq shared interrupt in request_irq (IRQ, handler, flags, devname, dev_id) (earlier than 2.6.19 kernel) # define irqf_shared interrupt (new version)

In development, in addition to svn updates on the local folder, svn operations on the command line are also critical. The following lists some documents excerpted by the website:1,Run the file checkout to the local directory.SVN checkoutPath (path

  I will not go into details about the usage instructions in many places. Here I will only talk about some details, that is, what I made a mistake. I checked a lot of information today and did not solve the problem. I am writing it now to help the

Configure bridges in the inux System First, install the NIC and connect it to the network. This is nonsense.Then start!Set linux to run bridges and configure BridgesWe need to let linux know about the bridge. First, we need to tell it that we want a

Disclaimer: This article is a blog of liufazhang, an open-source Chinese community. In Linux, there is a type of character device that shares a master device number (10), but this device number is different. We call this type of device as a hybrid

Eth0, eth1, eth2 ...... Indicates network adapter 1, network adapter 2, network adapter 3 ......Lo represents 127.0.0.1, that is, localhost Refer: Linux Command: ifconfig Function Description: displays or sets network devices. Syntax: ifconfig

Install the adb tool in linux Step 1: Start the Development Board and enter the android system. On the linux terminal, enter the lsusb command to query the devices on the USB Bus. For example, the query result is as follows: Bus 005 Device 001: ID