Linux

GDB Overview————GDB is a powerful UNIX program debugging tool released by the GNU Open source organization. Perhaps, you prefer that graphical interface, such as VC, BCB and other IDE debugging, but if you are in the UNIX platform to do software,

Linux Packet filtering firewall OverviewNetFilter, iptables can be called the Linux firewall, the difference is that the NetFilter is located in the Linux kernel packet filtering function system, called the Linux Firewall "kernel state", and

The function of the system call read is to read nbytes bytes of data from a file associated with the file descriptor files and place them in the data area buf. It returns the actual read-in character, which may be less than the requested number of

1. Close ApacheVersion one /etc/init.d/httpd stopVersion two /etc/init.d/apache2 stop2. View Port NETSTAT-ANP |GEP 80 Parameter Description:-P Process-A All-N Displays address and port numerically (otherwise ignoring virtual machine dynamic IP,127.0.

VI FileName: Opens or creates a new file and places the cursor at the beginning of the firstVI +n FileName: Opens the file and places the cursor at the beginning of nthVI + FileName: Opens the file and places the cursor at the beginning of the last

GetSystemMetrics (Sm_cxscreen) can be used under windows; GetSystemMetrics (Sm_cyscreen) gets.The xdisplaywidth can be used under Linux,xdisplayheight () gets.In QT? Online a lot of people say is qapplication::d esktop ()->width (); Qapplication::d

Install a software first, then use the Ddcprobe to see the current supported resolution and refresh rate#sudo Apt-get Install XresprobeRun#sudo Ddcprobewill get the following informationVbe:vesa 3.0 detected.Oem:intel (R) Cantiga Graphics Chip

Basic functionality of the source command under LinuxAuthor: faint de happinessSourceCommand usage:SOURCE FileNameRole:in the currentBashread and execute in the environmentFileNamecommands in the. Note: This command usually uses the command "."to

First build FTP.Note: This example is installed in the REDHAT6 64 system; Most Linux configurations are the sameOne. Installation1. Confirm that the Yum source "my yum source is directly used Redhat disk is relatively simple, while confirming that

During Linux configuration, use crontab and configure crontab in linux. In Linux, we all know how to use the crontab system function to configure scheduled tasks. However, sometimes we need to differentiate user execution. The following describes

CentOS Study Notes-Basic commands and centos Study Notes --Linux basic commands Linux servers do not have X-window installed, that is, there is no windows environment and only the text mode. Therefore, mastering some Linux commands is obviously

Configure a host-based Intrusion Detection System (IDS) on CentOS) One of the first security measures that system administrators want to deploy on their production servers is to detect file tampering-not only file content, but also their attributes.

Linuxgrep command usage and Regular Expression 1. Introduction to grep commands and Regular Expressions (1 ). grep (Global search REgular expression and Print out the line) is a powerful text search tool in Linux, it filters the target text based on

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How to install CentOS6.5 on a virtual machine In fact, it is quite simple to install a virtual machine through the VM, but there are some options that may lead to installation failure or self-perception after the installation is complete. Next I

CentOS7 user permission settings 1. Add sudo permissions, edit and modify the/etc/sudoers configuration file, and add the account with sudo permissions under root ALL = (ALL) ALL. 2. Modify the ssh remote Port: Edit vi/etc/ssh/sshd_config, locate #

Create and mount a shared scsi disk on centos 7 Lab device: Use a virtual machine to virtualize two centos6.3-64bit systems and configure yum IP settings: Scsi server: 10.1.1.222 Scsi client (Mount end): 10.1.1.1 Lab started: 1. Install software

Build a DNS service in linux I will not elaborate on the theoretical knowledge too much here. Need to Know: http://baike.baidu.com/subview/22276/15346050.htm? Fr = aladdin Go to build Software used: Vmware workstation 10 rhel6.3 (64-bit) Operating

Centos6.5 change 163 Source After CentOS6.5 is installed, you need to change the yum update source to avoid slow installation from a foreign site. The principle is very simple, that is, to change the update source in the yum configuration file.

Simple configuration and Optimization after CentOS6.3 system installation CentOS6.3 system installed with minimal package, used as a local Web server, now records the entire process of configuring Netease 163 yum Source 1. Download the repo File :