Linux

As a tester we do not need to be like operations engineers, database administrators, network engineers, such as the operating system, database, network and so deep understanding, but the common basic operations must be understood.    Here is the

USB devices is anywhere nowadays, even many embedded devices replace the traditional serial devices with USB devices. However, I experienced that USB devices-to-time. In most cases, a manual unplug and replug would solve the issue. Actually, USB

Introduction to Linux applications and developmentLinux has been learning for some time, but also a deeper understanding of the Linux system, today to summarize what is the Linux system, as well as a brief introduction of the Linux system history

1./proc directoryThe Linux kernel provides a machine that accesses kernel internal data structures and changes kernel settings through the/proc file system at run time.System. The proc file system is a pseudo-file system that only exists in memory

We often find a file in Linux, but do not know where to put it, you can use some of the following commands to search:Which view the location of the executable file.Whereis View the location of the file.Locate to view the file location with the

RTC Introduction RTC (Real-time clock) abbreviation real-time clock, the main function is to remember when, produce alarm clock and so on. RTC has a backup battery, so even if the computer shuts down, it will not affect the RTC memory. The

Help commandsCommand name: manCommand English original meaning: manualCommand path:/usr/bin/manExecute Permissions: All UsersSyntax: Man [command or configuration file]Function Description: Get help information example: Man ls to view the help

1, the Replication/etc/skel directory is/home/tuser1, requires/home/tuser1 and its internal files belong to the group and other users do not have any access rights.[Email protected] home]# cp-r/etc/skel//home/tuser1[Email protected] home]# chmod-r u-

Linux Course notes (operating system Basics)-20160822Layer Fourth: Application (1, run through kernel call,2, call library run)The third layer:library:API(Application programming Interface) libraries can only be executed when other programs call,

1. Locking system Important filesThe system operator may sometimes encounter situations where a file cannot be modified or deleted by the root user, most likely because the file is locked. The command to lock a file under Linux is Chattr, which

Gprof How to workWhen you specify the-PG option when using GCC compilation, the compiler inserts the performance test code into the user code. Gprof Simple Application ExampleMain.c #include #include "lib.h" int main (void) {func1 (FUNC2);

Server side is mainly installed Memcache server side.Download: http://www.danga.com/memcached/dist/memcached-1.2.2.tar.gzIn addition, Memcache used the libevent this library for socket processing, so you also need to install the latest version of

1. The applicable order and scheme are as follows:"Remote Connect and Execute command"SSH-P22 [email protected]SSH-P22 [email protected] /sbin/ifconfig"Remote copy: Push and Pull"Scp-p22-r-p/etc [email protected]:/tmp/Scp-p22-r-P [email

Content of this week's job:1. List the user name of all logged-in users on the current system, note: The same user logged in multiple times, only once.[email protected] ~]$ who | Sort |cut-d ""-f1 |uniq-c2. Remove the information about the user who

If you are a Linux operation, then the Linux Server system security issues, you may want to consider, and the system login method has two kinds, passwords and keys. Which one is more secure? Undoubtedly the latter! Here I share with you the way to

Install and debug freeradius on centos1. Use yum to install freeradius2 instead of 1. If freeradius is used again, uninstall it first.Yum remove freeradiusInstallYum install freeradius2Yum install freeradius2-utils // This includes radtest, user

Go to the Linux subsystem in Windows 10GuideAt Build 2016 this year, Microsoft introduced to the world that they are still in Beta stage.Linux subsystem in Windows(WSL), which allows developers to run the native Ubuntu user-state binary program in

Red Hat, an open-source subsidiary established by Microsoft, is cautiously optimisticGuideRed Hat, a Linux leader, said today that he welcomed Microsoft's establishment of an open technology subsidiary, but Red Hat also took a wait-and-see attitude

Linux desktop market share exceeds 2% Statistics from W3Counter and NetMarketShare show that the Linux desktop market share has exceeded 2%. According to NetMarketShare, the market share of Windows desktop fell below 89.79%, accounting for 8.19%,

CURL command details, curl command The curl command is a powerful network tool that can download and upload files through http or ftp. Among them, curl is far more than these functions. You can read the manual to get more information. Similar Tools