Linux

View GDB's version number (1) rpm-q gdb will show if GDB is installed and the version number (2) GDB--version can also Breakpoint b Main; b 20; Set breakpoints Breakpoint If Break function name, number if

1. IntroductionLinux framebuffer is a hardware-independent abstraction layer for displaying images on a monitor, meaning a piece of memory area containing the current video frame Framebuffer as an image of the display memory, mapped to the process

Reprinted from: http://my.oschina.net/renhc/blog/53580LinuxTry to avoid using system. Once, it was tortured by the system () function, because the system () function was not well understood. Simply knowing that using this function to execute a

1. Command format:diff[parameter [file 1 or directory 1][file 2 or directory 2]2. Command function:The diff command can compare individual files or directory contents. If you specify that the comparison is a file, it is only valid if the input is a

Sdio CardSdio card is in the SD memory card interface developed on the basis of the interface, SDIO interface compatible with the previous SD memory card, and can be connected to the Sdio interface device, currently based on the SDIO protocol

First, the Linux basic Practice 1.11. Master The maintenance method of the software source, configure the system to use the software source image. Master the method of finding, installing, uninstalling and updating software through the software

System version: CentOS 6.5 software version: zabbix-2.4.6.tar.gzZabbix is an enterprise-class open source solution that provides distributed system monitoring and network monitoring capabilities based on a web interfaceZabbix can monitor various

1. Device TypeLinux is comprised of 3 types of devices, namely: Device type Represents a Device Characteristics Access mode Block devices Hard disk, CD Random access to content in the device

1. User Management Commands(1) User add command Useraddcommand format:useradd [options] Username option:-u UID: Manually specify the UID number of the user-D home directory: Manually specify the user's home directory-C user description: Manually

Look at the next day, or to learn the operating system related, for the behind write driver preparation.Process process is the basic concept in any multi-channel program designed operating system. A process is typically defined as an instance of

Time delayHow to measure the time difference, compare timesHow to get the current timeHow to defer an operation for a specified period of timeHow to schedule an asynchronous function to execute after a specified timeMeasure time DifferenceThe kernel

   in Linux, many people will use the mail alarm, and this aspect of the software is also numerous, common like sendmail, sendemail, postfix, and so on, their advantages and disadvantages I do not say, the use of each their own. Today I would like

There are two times in a Linux system, hardware clock and system time, the hardware clock refers to the clock device on the motherboard, which is usually the clock that can be set on the BIOS screen. The system clock refers to the clock in the

The definition format of the 1:bash function [Function] funname [()]{action; [return int;]}Description1: Can be defined with function fun () or directly fun (), without any parameters.2: The function returns a value that can be returned with a

RPM: Linux standard input and outputA file descriptor is a simple positive integer that identifies each file and socket that is opened by the process.The first three file descriptors (0,1,2) correspond to standard input (stdin), standard output

Well-known kernel threads in Linux (1) -- ksoftirqd and events Well-known kernel threads in Linux (1) -- ksoftirqd and events-- Lvyilong316 We know that there are many kernel threads created by the linux system, which guarantee the normal operation

[Linux] Linux system (login, exit, password repair), linux Password To log on to linux, enter the user name and password and press Enter.   Change Password Use the passwd command to enter a new password and confirm the password. The password

Install PHP 5.6 in CentOS7.0 Because the server environment is migrated from CentOS6.5 to CentOS7.0, and Apache is changed to Nginx. Here we will briefly introduce how to install PHP 5.6 in centos. After PHP5.6 is installed, you no longer need to

Automatically generate and publish GitBook (Nginx) using GitLab + Jenkins in the LAN) GitBook is installed on the Intranet, so you cannot use the GitBook webpage. Gitbook serve can only show one book, and it is not conducive to long-term maintenance.

Monitor Zabbix User-Defined OID Monitor Zabbix User-Defined OID 1. Write the Monitoring Service script [Root @ db02 ~] # Cat mysqlstat. sh#! /Bin/bashMysqlstat = 'ps aux | grep mysql | wc-l'Echo $ mysqlstat[Root @ db02 ~] #./Mysqlstat. sh3 [Root @