Linux

Sed-I's/old_string/new_string/G' file_name>/dev/null     Use double quotation marks when referencing shell variables in the SED command line, instead of the common single quotation marks. BelowIs a script to delete the zone segment in the named.

(1) Non-connection socket communication is relatively simple compared with the connected socket communication, because it is not guaranteed to arrive during the transmission process, and is often used in places with low data requirements. Because it

Common kernel documents: Readme: This file introduces the background and development of Linux. How to compile and configure the kernel. How to solve the problem. Documentation/changes: the minimum package for compiling and using the kernel.

Notes for installing and using Linux SVN Www.svn8.com 20:36:10 Source: Author: Comments: 0 Click: 1053 SVN introduction, download, and installation SVN Introduction The goal of the Subversion project is to build a version control

Configure two Tomcat applications on one server. The catalina_home environment variable cannot be configured in/etc/profile. 2. Keep the default settings for the First tomcat configuration. modify several options in the server. xml file under the

Try UML (user mode Linux)   Please indicate the source when reprint: http://blog.csdn.net/absurd/   Here, UML does not refer to the unified modeling language, but to Linux in the user mode. As the name implies, a Linux system runs as a user

1 select The Select () System Call provides a mechanism to synchronize multiple I/O: # Include # Include # Include Int select (int n,Fd_set * readfds,Fd_set * writefds,Fd_set * required TFDs,Struct timeval * timeout ); Fd_clr (int fd, fd_set * Set

A simple web server in Linux can be used to process static HTTP requests. How to Use SOCKET and HTTP #include #include #include #include #include #include #include #include #include #include #defineFILE_MAX_SIZE100000#define back_log10#define PORT808

From: http://hi.baidu.com/phenix_yw/blog/item/6eb4ca391d1479f23a87ce19.html   Signal installation function sigaction (int signum, const struct sigaction * Act, structSigaction* Oldact) The second parameter is a pointer to the sigaction structure

[Mr. Right: blog.csdn.net/lanmanck] For Embedded Linux systems, firmware update is a required feature. Google does not seem to talk much about it. If you know xdjm, please leave a message. I will update it. Now let's talk about the update idea. We

Upgrade Linux KernelStep 1: The current 2.6 kernel InstallationStep 2: familiarize yourself with existing filesStep 3: Upgrade the version of each change file in the systemStep 4: configure the new kernelStep 5: Create a New KernelStep 6: install

1. Write the kernel module. Take hello as an example. # Include # Include   Module_license ("dual BSD/GPL"); // permission of the kernel module // Module Loading Function Static int hello_init (void) { Printk (kern_alert "Hello world! \ N ");

1. The standard input stdin file descriptor is 0, the standard output stdout file descriptor is 1, and the standard error stderr file descriptor is 2 2./dev/null empty device, equivalent to a waste bin 3. Redirection symbols:> 3. 2> 1 and 2> & 12> 1.

Hardware Platform: fl2440 Development Board Kernel version: 2.6.28 HOST: Ubuntu 11.04 Kernel version: 2.6.39 Original works, reprinted please indicate the source http://blog.csdn.net/yming0221/archive/2011/06/24/6566551.aspx   I thought the size of

These articles are the notes for reading the "Cultivation of Linux kernel" and some additional knowledge and insights. If you are not clear about these articles, please refer to the "Cultivation of Linux kernel" and other materials. If there is

Ptrace system call] Function Description:It provides a mechanism for the parent process to observe and control the execution of another process, and also provides the ability to query and modify the core images and registers of another process. It

1. File Type Linux files can be divided into 6 categories, common files (by internal structure can be divided into: text files, binary files), directory files, linked files, device Files (which can be divided into block device files and character

In this article, we will talk about the driver principle of Linux touch screen device at the technical level. A touch screen uses an adconverter chip to convert the touch signal on the screen into a digital signal. The touch screen is commonly used

In the driver development process, we sometimes encounter such an application: for example, the firmware of a chip is not fixed and can be upgraded later. Therefore, you need to perform a check every time the system is started. If a new firmware is

Linux Kernel scheduling mechanism Preemptible and non-preemptible kernelsRelationship between preemptible Linux kernel and Real-Time SystemA good system process scheduling mechanism must meet the requirements of three different applications: 1.