Linux

implementation of system call under Linux Introduction to architecture and system invocation of Unix/linux operating system what is an operating system and system call The operating system is a virtual machine that is abstracted from the hardware,

Linux port Scan Tool Nmap and Nwatch Introduction to Port scan The method of port scan port scan is a way to detect an opposing server service by detecting an open port on the other server. Generally can be divided into active and passive two kinds.

By dynamically changing the CPU voltage, you can adjust the CPU frequency. The CPU clock frequency can be changed dynamically by changing the clock multiple. Some processors with adjustable CPU main frequency clock multiples can switch dynamically

rsync Simple The role of rsync is like the general Linux CP and SCP directive, which can be copied from the source location to the destination location, however, rsync is more efficient than CP and SCP in a copy of the file, and supports both the

View multi-core CPU commands mpstat-p all and sar-p all Description: Sar-p all > Aaa.txt redirect output to file Aaa.txt The top command is often used to monitor Linux system conditions, such as CPU, memory use, the programmer basically know the

It programmer development must-all kinds of resources download list, the most complete IT resources in history, personal collection summary. One, ln command parameters LN is another very important command in Linux, its function is to create a link

All support Regular expression1. Find-name Search by name-perm Based on Permissions lookup-ctime–n +m lookup based on creation time,-n days, +n n days ago-mtime–n +n Last Modified time-exec command {} \; Execute command for each record-ok command {}\

1. Some concepts about terminals: terminals, consoles, virtual terminals, pseudo terminals, control terminals Here first recommend a blog: Linux under the TTY, console, virtual terminals, serial, console (console terminal) detailed Here are some of

How to view the resources used by the Linux system (top, free, and uptime) The items in the first line are the current time, system startup time, number of users logged on to the current system, and average load. However, it consumes a lot of

1. Summary background In Linux, If you download and install an application, it is very likely that the prompt "command not found" appears when you type its name. If you find the executable file in the installation target folder every time, it is too

During this time, I read "Linux kernel source code Scenario Analysis" and wrote some insights. Reading the kernel source code is very interesting. It is like a line that concatenates basic computer courses such as operating systems, compilation

A Brief Analysis of Linux internationalization and localization mechanism original address: http://www.oschina.net/question/12_7648 Linux is an international operating system. Its toolkit and device drivers support multi-language operations. This

Make is a very important compilation command in both Linux and UNIX environments. Make or make install is often used for project development and application software installation. With the make tool, we can break down large development projects into

Cron is a Linux scheduled execution tool that can run jobs without human intervention. Since cron is a built-in service in Linux, but it does not automatically get up, you can use the following methods to start and close this service: 　

Chapter 1 Preface The purpose of this article is to introduce the general process of establishing and developing an embedded Linux system. A small Linux system can be transplanted to other hard disks, floppy disks, USB disks, and Flash ROM

Note: a good article on understanding PCI devices and PCI drivers To understand the Linux PCI device driver, first understand that the so-called Linux PCI device driver actually includes the Linux PCI device driver and the device driver. I do not

Path for Linux Device Driver engineers-basic principles and framework of network device drivers K-Style Reprinted please indicate from Hengyang Normal College 08 electric 2 K-Style http://blog.csdn.net/ayangke,QQ:843308498 mailbox:

In centos, mplayer was used to watch HD movies. Find a good solution on the Internet and attach it to the bottom. Here we first record our actual solution:Solution 1: Use the mplayer-framedrop parameter to play the video. The effect is also

There are many reasons that may result in the loss of user passwords, which may not be a problem for the system administrator. You only need to log on with the Root account and use the Passwd command to change the user password. But what if the Root

The following is an article I recently read when I wrote a pci driver. I hope it will be helpful to you. Hi, I was a beginner in linux.The driver is also difficult, and many people are asked about it shamelessly. I would like to express my gratitude