Linux

Http://xmuzyq.iteye.com/blog/783218 TheArticleThe reactor mode and proactor mode are described in detail, and different Io operations are emphasized. Http://blog.csdn.net/shallwake/article/details/5265287 This blog post describes the five I/O

Using UTF-8 code to send mail can thoroughly solve the garbled problem. In Linux, locale can be set to a en_US.UTF-8 or zh_CN.UTF-8 so that the mail content can be automatically encoded as utf8. However, when you use the MAIL command to send an

Because I accidentally modified the fstab error, my fedora cannot be started. After exploration, it is restored successfully. The recovery process is as follows: 1. Use Ubuntu to install the disk. If you do not have a USB flash drive, you need a

#includeint dup(int file_descriptor);int dup2(int file_descriptor_one , int file_descriptor_two); The purpose of the DUP call is to open a new file descriptor, which is similar to the open call. The difference is that the new file descriptor created

--- View the default maximum number of file handles in Linux, Which is 1024 by default. # Ulimit-n 1024 ---- View the number of handles opened by the current process # Lsof-N | awk '{print $2}' | sort | uniq-c | sort-Nr | more 131 24204 57 24244 57 2

1. install Apache from the source code========================================================== ======================================Apache-----------------------------------------------------------------./Configure -- prefix =/usr/local/httpd --

Http://blog.chinaunix.net/space.php? Uid = 20508270 & Do = Blog & cuid = 1999671In/etc/hosts, set the IP address to correspond to the domain name: 192.168.0.6 Www.aabbccddee.com if you want windows to access: c: \ windows \ system32 \ drivers \ etc

The core of this series of articles is 2.6.32-220.Here we use "model" instead of "algorithm" because it is really hard to describe using algorithms (but it runs well, including performance ).Core Idea: Assign the total CPU time to each se based on

1. vmstatVmstat (Virtual MEOMORY statistics) is short for vmstat. Many Linux and UNIX instances are installed by default. It is the statistical information of kernel threads, virtual memory, disks, traps, and CPU activity. If it is insufficient, it

1. Install./ConfigureMakeMake install 2. Introduction to SAR commandsSar-HUsage: SAR [Options] [ []Main options and reports:-B I/O and transmission rate information-B paging status-D Block device status-I { | sum | all | xall}Interruption

The following are ten instances that generate random passwords: 1, Sha + date + base64, password length 32date +%s | sha256sum | base64 | head -c 32 ; echo 2. Use urandom to filter out other characters, leaving only letters and numbers, and the

Memcache uses the libevent library for socket processing, so you also need to install libevent, the latest version of libevent is the libevent-1.3. (If your system has already installed libevent, you do not need to install it)  Use the wget command

Basic Process Server Declare the handle FD and network address sockaddr_in If sockaddr_in is assigned as the server port and inaddr_any, it indicates listening to any connection. Call the socket function to create a socket and

Author: Yili Xie yili.xie@gmail.com Date: 2010-1-13 You are welcome to reprint it. Please indicate the source     A new driver management and registration mechanism has been introduced since Linux 2.6: platform_device and platform_driver. Most

Path for Linux Device Driver engineers-Linux memory management mechanism and MMAP Method K-Style Reprinted please indicate from Hengyang Normal University 08 electric 2 Y-Kee http://blog.csdn.net/ayangke,QQ:843308498   I. Key knowledge   1. Linux

After you fail to use the official installation package of QT, Linux cannot be started. "/Dev/sda11 unexpected inconsistency, run fsck manually" If the sda11 partition is inconsistent, run fsck manually. Baidu Knows That fsck is a command to fix

Path to Linux driver engineers-hardware access and Hybrid device LED driver K-Style Reprinted please indicate from Hengyang Normal College 08 electric 2 K-Style http://blog.csdn.net/ayangke,QQ:843308498 mailbox: yangkeemail@qq.com   I. Important

Path for Linux Device Driver engineers-advanced character device drivers K-Style Reprinted please indicate from Hengyang Normal College 08 electric 2 K-Style http://blog.csdn.net/ayangke,QQ:843308498 mailbox: yangkeemail@qq.com   The advanced

Document directory 2. interrupt handling Ii. driver code PLATFORM Device PLATFORM driver Path for Linux Device Driver engineer-platform key driver Y-kee Reprinted please indicate from Hengyang Normal University 08 electric 2 Y-Kee

The system crashes once and many files are lost. Fortunately, the lost files are not very important. After learning this lesson, you must write blogs frequently. No matter how cool things are, once you have used them, and forget to use them one day,