Linux

I learned a new command:PartprobeThis command can make the new disk partition take effect without restarting the operating system. Default location:/sbin/partprobe. Related commands:Parted. In practice, warnings are sometimes reported and

The DVR is configured with a m clock speed of arm11 and M memory, half of which are allocated to the video decoder. The kernel and other processes also occupy a lot of memory, leaving less memory for Qt to run. Later, we transplanted QT browser and

Recently, we need to use Linux inter-process communication. from the Internet, we can see an excellent piece of information, Dr. Zheng yanxing posted on IBMA series of articles on developerworks talk about several communication methods such as

How to modify the host name in Linux You can use the hostname command to temporarily modify the machine name, but the original value will be restored after the machine is restarted. # Hostname // view the machine name# Hostname-I // view the IP

It's hard to study embedded Linux. I will share my learning achievements with you in the next days. "Keep learning, don't be afraid" First, the basics of Linux Linux features: 1. Free Open Source 2. Portability and device platform independence 3.

From: http://www.gwxdn.com/html/system/linux/2010/0120/6128.html The Linux host name is set during the installation of the Linux operating system and is the only identifier of a host on the network. However, if you want to modify the host name after

Solution to LINUX serial port programming Articles on Serial Port Programming in Linux are everywhere on the Internet, but most of them are from one article, and they all write some basic operations, such as controlling the Serial Port Pin status

This analysis based on Linux 0.11 kernel, reprinted please indicate the source http://blog.csdn.net/yming0221/archive/2011/06/06/6528490.aspx The copy_mem (int nr, struct task_struct * P) function is used to set the base address of the segment for

Index: 1. Create thread pthread_create2. Wait for the thread to end pthread_join3. Separate the thread pthread_detach4. Create a thread key pthread_key_create5. Delete the line key pthread_key_delete6. Set the thread data pthread_setspecific7. Get

Linux I/O multi-channel Transfer Model: In this model, if the requested I/O operation is blocked, it does not actually block I/O, but waits for one of the functions. During this period, i/O can also perform other operations. Select () and Poll ()

Iptable is a built-in firewall for Linux. Many network service providers need to open the corresponding ports for VPN, web, and FTP connection. For example, to install lnmp firewall in centos, port 80 must be enabled.In Linux. Basic iptables

After Linux is installed by default (the firewall is enabled), port 1521 is not opened in the firewall, so that the Oracle client cannot connect to the server. In this case, disable the firewall or set the firewall to open port 1521.1. Check the

Almost every type of peripherals is operated by reading and writing registers on the device. Generally, there are three categories of peripherals: control registers, status registers, and data registers. The registers of peripherals are usually

Chapter 1 Basic Linux commands-file and directory operations 1. Use bash for Interaction Command completion, history, and keyboard shortcuts 2. file and directory operations CD, PWD, mkdir, rmdir, and touch (update the access and modification time

Linux Kernel panic is a major fault that is difficult to locate and troubleshoot. Once the system has a kernel panic, there are very few logs, A common troubleshooting method-reproduction method-is difficult to implement. Therefore, the problem of

Use mdev to automatically create Device File nodes in Embedded Linux Mdev is a simplified version of udev that comes with busybox. It automatically generates the node files required by the driver when the system starts and hot swapping or

First download the arm-linux-gcc-4.3.2.tgz, you can copy it to/tmp, and then enter the Directory Input: # Tar xvzf arm-linux-gcc-4.3.2.tgz-C/ Then the installation starts. Step 2 add environment variables to the compiler and run the following

The first is the find Syntax: Find [start Directory] search for conditional operations There is also a way to express it: Find path option [-exec command {} \;] Because the find command will perform recursive search on the files and Their

LinuxLowerTelnetService installation and configuration   Install the Telnet Service Step 1: first, load the content of the optical drive and view the image

Linux installation illustration (Linux text interface installation)   Prerequisites: 1. Download the Virtual Machine Vmware 2. Download the Linux image (ISO) Address 2 Redhat9. (Please copy the following link and download it with thunder and other