Linux

Common Linux header files   /* Linux/Drivers/sys-print.c * Author: woodpecker * use sysfs to implement a dynamic printk. * this file is subject to the terms and conditions of the GNU General Public * license. see the file copying in the

After Linux is installed, you can continue to learn about Linux as long as you have time. I didn't know how to start at the beginning. I had a development board named mini2440 at hand. According to the operation manual of the Development Board,

In setup_arch:   1. parse_cmdline (): Based on the mem information transmitted by uboot, early_mem () is called to add the physical memory information to the meminfo struct using arm_add_memory.   2. paging_init (): This is the key function

1. Modify the/etc/profile file Features: All users' shells have the right to use the environment variables you configured NOTE: If your computer is only used for development, we recommend that you use this configuration because all users' shells

There are two types of Linux file system links: hard link and symbolic link. You can use the ln command to create a hard link by default. For more information about how to use the ln command, see the man manual. The hard connection directly

1. RoleModify the attributes of the ext2 and ext3 file systems and use the permission superuser. 2. FormatChattr-RV-+ = aacddijssu-vversion file or directory 3. Main Parameters-R: recursively processes all files and subdirectories.-V: displays the

In the 2.6 series version, you can easily create device nodes by using udev to manage device files. You do not need to use mknod to create device nodes. In this article, we use the minimum encoding to describe how to create a device node. //

Understanding Linux two-way linked list Original article: Http://blog.csdn.net/leisure512/article/details/5188986 I cut some of them and added them to the diagram. Hlist_head, a two-way linked list in the Linux kernel, is defined as

I. NTFS write problems: Resolv the problem that can't write file in NTFS file system on Linux: Mount-T ntfs-3g/dev/sda3/mnt/wind Fatal: module fuse not found.NTFS signature is missing.Failed to mount '/dev/sda3': invalid argumentThe device

1) solve the inconsistency between version magic Original article: http://blog.sina.com.cn/s/blog_7d638eda010118rh.html Http://tldp.org/LDP/lkmpg/2.6/html/x380.html After compiling a kernel module, if the machine that installs the module

How to install WebSphere and Applications in Linux (858) ======== Install JDK, IBMJava118-SDK-1.1.8-4.0.i386.rpm ========Suppose you want to download RPM to/root/RPMS and input the following command from the command

This article is a small post, which can be ignored by experts. If you have a program, a board, a file system, a computer, and a serial line, but you don't know how to start it, let the board run your program, then you should read this article

Http://fxr.watson.org/fxr/source/include/linux/fs.h? V = linux-2.4.22 # l563   Struct file {564 struct list_head f_list;565 struct dentry * f_dentry;566 struct vfsmount * f_vfsmnt;567 struct file_operations * f_op;568 atomic_t f_count;569 unsigned

System V or POSIX? Which one should I use? This is a problem... Relatively speaking, I prefer the latter POSIX MQ Posix mq Overview: Man mq_overview Simple implementation code: #include #include #include #include #define MY_MQ_NAME

With the support of VFS, user-State processes can use read and write to read and write file systems of any type, but how can we operate files without such a system calling in the Linux kernel? We know that when read and write are in the kernel state,

I. rwlock_t Read/write locks are always initialized in this way rwlock_t my_rwlock = RW_LOCK_UNLOCKED But not on Kernel 2.6.30 .... Error: 'rw _ lock_unlocked 'undeclared (first use in this function) Error: (each undeclared identifier is reported

Mr Chen has been engaged in Embedded Development in Linux. As a front-line engineer in development, his views on many issues may be more practical. Therefore, by email, he will discuss embedded development issues, ask him to talk about his views: Q:

Use of select and poll in Linux Functions of the select () function The system calls the back-end Implementation of select and poll, and uses these two system calls to query whether the device can read or write, or whether it is in a certain state.

Document directory 1. Definition 2. Related functions The kernel timer is a mechanism used by the kernel to control the scheduling of a function at a certain time point in the future, and is in the context of interruption. Therefore, the

First, the host machine is WINXP and the IP address is 192.168.1.18. Fedora Linux is installed with VMware and the IP address is 192.168.1.252. If hamachi is installed (software that facilitates online games with people), Linux cannot access the