Linux

I. Synchronous vs. asynchronousEarlier in the discussion of threads mentioned a thread to the critical resource access of a synchronous and mutually exclusive relationship, here to emphasize that in the IO Model synchronization and asynchronous and

Guide The Linux kernel itself implements a doubly linked list, which can be found in include/linux/list.h. We will begin by introducing the data structure in the kernel from a doubly linked list structure. Why? Because it is used extensively in

First, the experimental environmentVirtual machines: VMware Workstation 12.0;Operating system: ubuntu16.04 (32-bit);Current kernel version: 4.4.0-21-genericSecond, the Knowledge reserveNow, let's take a look at what a kernel module is:A module is a

First of all, VC6 naturally can not directly develop the Linux program, mainly using its editing environment, but as a developer who has been using VC6 on Windows, not to VC6 as the core of development is how not accustomed to ah. It is also stated

The Paramiko is a Python ssh library that you can use to connect to a remote Linux host and then execute a Linux command or transfer files via SFTP.about using Paramiko to execute remote host commands you can find a lot of references, this article

Transferred from: http://blog.sina.com.cn/s/blog_6fc583e70100n6rm.htmlTest environment: CentOS 5.51, add the user, first with the AddUser command to add a normal user, the command is as follows:Add a user named Tommy #passwd Tommy //Change

JDK InstallationFirst, use the Yum list |grep JDK command to detect if the system has its own installed RPM package.[email protected] ~]# Yum List | grep JDKFile:///mnt/cdrom/repodata/repomd.xml: [Errno] Could not open/read

Introduction of environment variable fileTransferred from: http://blog.csdn.net/cscmaker/article/details/7261921Environment variables in Linux include system-level and user-level, system-level environment variables are system variables to be read by

[Linux operations] common scenario simulation-CPU usage simulationFrom http://www.cnblogs.com/zk47/p/4771105.html1 Single Core 100%: Codekill_cpu.c #include int main(){ while(1); return 0;} Run out kill_cpu.c$ ./out

? SVN server Setup under LinuxIn view of the construction, the reference online a lot of information, online information in useful, but also pit a lot of peopleThe purpose of this article is to let the successor in the build SVN server no longer

The development environment of LDD3 recommended is 2.6.10, installed RHEL4-UPDATE4, its kernel version is 2.6.9.42, compiling the mmap program times wrong: Unknown symbol Remap_pfn_rangeOn the Internet, the above error should be changed to

The socket programming under Linux basically includes TCP socket, UDP socket that is raw socket three kinds, where the TCP and UDP socket programming is used to write the application layer of the socket program, we use more, and raw Sockets are used

1. Function: Unzip zip file2. Location:/usr/bin/unzip3. Format usage:unzip [-z] [-opts[modifiers]] file[.zip] [list] [-X xlist] [-D Exdir]4. Main parameters -C Display the extracted results to the screen and convert the characters

The Linux compression/decompression command uses the method compress command [[[email protected] ~]# compress [-DCR] file or directory parameter:-D: The parameter to decompress-R: can also be given simultaneously with the file in the directory [

Linux Driver Development VI (instruments for hardware knowledge that must be understood) First, prefaceIn the previous article, Lao Xie has shared a lot of knowledge about the hardware that must be learned in the development process of embedded

Today we will introduce a good flowchart making tool--graphvizThe installation method is many, can be installed through the Deb package, the source code, as well as the commandI use the source code installation, here to download its source package,

find is a very common Linux command, but what we generally find out is not just to look at it, there will be further operations, this time the role of exec is revealed. e xec Explanation:The-exec parameter is followed by command, which terminates

Linux Shell series (3) Shell variable, linuxshell This article is part 3 of the Linux Shell series. For more shell tutorials, see the Linux Shell series tutorials.As an advanced script language, Shell also supports custom variables. Today, we will

Automated Integrated deployment udeployer one-key batch installation deployment and udeployer one-keyBuild a project through jenkins; version Control; udployer automated integration; ucop business inspection to achieve efficient and highly available

Svn log version rollback, svn log version [root@v01 online]# svn diff -r 9:8Index: index.html===================================================================--- index.html(revision 9)+++ index.html(revision 8)@@ -10,4 +10,3 @@ kkkkkkkkkkk