Linux Programming-Database (chapter seventh)

7.3 Database This is the DBM database for Linux, and the code is downloaded in dbm database code. You can use files to store data, why do you need a database? Because in some cases, the characteristics of the database provide a better way to solve

The problem summary of the LCD 10-minute auto-shutdown under Linux

LCD driver under Linux will automatically turn off the screen after 10 minutes, we can modify the code so that it does not automatically turn off the screenThere is a drivers/char/vt.c file in which there is a variable (blankinterval) that can be

Linux system add root certificate Linux certificate trust list

1.linux access to HTTPS certificate issues [[Email protected] ~]# curl -v https://mobile.mycard520.com.tw* about to  connect ()  to mobile.mycard520.com.tw port 443  (#0) *   trying  220.130.127.122... connected* Connected to mobile.mycard520.com.tw 

Linux Performance monitoring: Tools

A fully running Linux system consists of many subsystems (introduction, Cpu,memory,io,network, ...). ), monitoring and evaluating these subsystems is part of the performance monitoring. We often need macroscopic view of the whole system state, also

Linux Performance monitoring: CPU

CPU usage depends primarily on what kind of resources are running on the CPU, such as copying a file that typically consumes less CPU, because most of the work is done by DMA (Direct Memory Access), but after the copy is complete, the CPU knows that

Linux installs Maven and Nexus Agent repositories

1 description 2 Installation Steps 2.1 2.2 Maven Installation Steps 2.2.1 Unpacking the MAVEN installation package 2.2.2 Configuring environment variables 2.3 Sonatype Nexus Installation Steps 1 descriptionEnvironment:

Please try to answer a question about unix/linux automatic expansion stack

Have the ability to come out, do not have the ability to be a turtle!If let me answer about the process stack, line stacks problem, as long as the problem is not general, as long as the problem is clear, I will lay it on to answer, the correct rate

Brief description of RAID type and implementation of soft raid on level Linux system

Early due to raid is often used to combine some inexpensive SATA interface hard disk devices to complete redundancy.So the early full name is: redundantarray of independent Disks (independent redundant disk array). The primary function of RAID is

How to install YAF in a Linux environment

My native Environment configurationlinuxMint17.1php5.5nginx1.4.6Start installation belowDownload the latest YAF packageHttp://pecl.php.net/package/yafThe latest version I downloaded is 2.3.3Extract$PHP _bin/phpize . /configure--with-php-config=

Common commands for working with directories in Linux

let's look at a few common commands for working with directories:LS: List directoryCD: Switch directoriespwd: Displays the current directorymkdir: Create a new directoryRmDir: Delete an empty directoryCP: Copying Files or directoriesRM: Remove files

Interactively add user scripts under Linux (four examples)

Recently need to use the Linux script Interactive way to add users, their own three scripts to share and record, easy to follow-up, but also share, I hope to help the same shell script rookie.Example one: Add users in an elegant wayFollow the

"Linux" Classic Linux system engineer face Test (reprint)

1. How to forward the local 80 port request to 8080 port, the current host IP is 192.168.16.1, where the local NIC eth0:For:# iptables -t nat -A PREROUTING -d 192.168.16.1 -p tcp --dport 80 -j DNAT --to 192.168.16.1:8080Or# iptables -t nat -A

Use of Linux development tools

1. Use of Linux development tools Use of VIM compilation Use of GDB Debugging tools The writing of Makefile Linux Trace debugging Use of SSH Use of subversion 1. Use of the Linux development tool

Linux Service Erection--traceroute command

Role:A router, gateway that looks at which IP addresses the packet passed through during transmission.Working principle:First send a TTL of 1 UDP packets to the remote host, according to the protocol, the router receives the packet, the TTL value

Common compression decompression commands under Linux

Inux Zip commandZip-r myfile.zip./*All files and folders under the current directory are compressed into myfile.zip files, and-R indicates that all files in the subdirectory are compressed recursively.2.unzipUnzip-o-d/home/sunny Myfile.zipUnzip the

Linux route command Details: View and manipulate IP routing table

The route command for the Linux system is used to display and manipulate the IP routing table (show/manipulate the IP routing table). To achieve communication between two different subnets, you need a router that is connected to two networks, or a

Install and configure pptp on the CentOS Server

Install and configure pptp on the CentOS Server Note:Server Operating System: 64-bit CentOSServer IP Address: 192.168.1.100Purpose: To install and configure pptp on the server and provide the vpn dialing service externally Specific operations:(1)

Ubuntu Gnome and Fedora 22 Gnome Desktop use extensions to implement global menus

Ubuntu Gnome and Fedora 22 Gnome Desktop use extensions to implement global menus Ubuntu Gnome and Fedora 22 Gnome Desktop use extensions to implement global menus First Extensions used My topic (Installationsudo dnf copr enable

Build an ftp server on CentOS 7

Build an ftp server on CentOS 7 This article uses the latest CentOS 7 to learn how to build various Linux servers. Today we are sharing the idea of building an ftp server (ps: we do not recommend using the latest system for learning because the

Set up rsyslog log server using centos

Set up rsyslog log server using centos The system is centos 6.5x64 Server Yum install-y rsyslog Mkdir/data/log Vi/etc/sysconfig/rsyslog # SYSLOGD_OPTIONS = "-c 5" # R indicates that receiving is allowed, x indicates that DNS resolution is not

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