Cloud Applications

For more information about the destination IP address in network datagram (skb)-Linux general technology-Linux programming and kernel, see the following. I wrote a driver that runs in a kvm virtual machine. This driver can be disguised as a NIC to

Test the network connection status based on the running status of the daemon. This is far better than simply finding the network connection status parameters. The following uses a script to test the status of a specified process name and displays

#! /Bin/shwhilesleep30doSquidNum = 'ps-ef | grepsquid | grep-vgrep | wc-l' # HttpNum = 'netstat-an | grew.0.0.0: 80 | grep-vgrep | wc-l' #80 status if [$ SquidNum! = 3]; then/etc/rc3.duidstartad #! /Bin/sh While sleep 30 Do SquidNum = 'ps-ef | grep

Development is based on Node. js WEB applications are very convenient, but the service port is very painful. Because Linux kernel requires that common users only use port numbers greater than 1024, so common users can run Node. the js service cannot

Eclipse + libpcap network development engineering configuration problems-General Linux technology-Linux programming and kernel information, the following is a detailed description. I want to use eclipse + libpcap as a packet capture tool, so I first

Linux general technology-Linux programming and kernel information-linuxSD card driver. I transplanted the SD card driver on linux2.6.25. SD card plugging during board power-on can be properly identified (debugging information can be printed in the

In the past few days, the CentOS system memory has been rising. even if apache and mysql are disabled, the memory will not be released. you can use the following script to release the memory :#! /Bin/bash # release cache: In the past few days, the

1. get the Shell code for today's time $ date-d & quot; now & quot; + % Y-% m-% d2. get the Shell code for yesterday's time $ date-d & nb 1. obtain the current timeShell code $ Date-d "now" + % Y-% m-% d   2. take the time of yesterdayShell code

\ D: indicates the date in the format of weekdaymonthdate. for example, & quot; SunSep18 & quot; \ H: The Complete host name. For example, my machine name is redhat. in linux, the name is fc4.linux \ h: only the first name of the host. in the

How to install ipsectools in centos-Linux general technology-Linux technology and application information. After ipsectools is installed on centos6.2, configure the racoon. conf file. However, if you add the remote anonymous option, racoon cannot be

I. common shell tools linux shell tools are divided into two types: Image interface shell (GUI) and command line form (CLI. GUI tools include Xwindowmanger, CDE, GNOME, KDE, and XFCE2.CLI tools including bsh, csh, tcsh, ksh, bash, and zsh. Bash is

Because there are many hosts and many VLANs in the LAN, you can always know the number of online hosts and write scripts to check the online hosts. The result is that the host is displayed in green online and the host is displayed in red offline.

Share the second Chinese version of the classic BrianW. Kernighan C language programming-General Linux technology-Linux programming and kernel information. For more information, see the following. The computer industry has undergone a revolution

This script is used to analyze and count the secure log file. you can use iptables to block IP addresses with many ssh logon errors. #! /Bin/bash # Createdbyhaiyunnum = 10 # Upper limit foriin 'awk & #39;/Failed/{print $ (NF-3)} & #39;

I am speechless-General Linux technology-Linux technology and application information. The following is a detailed description. I used a USB flash drive as the boot disk of the red flag linux7, but it cannot be started. the boot interface is

Linux-General Linux technology-Linux programming and kernel information-the process of porting the MPC875 to linux. The following is a detailed description. Linux has been transplanted to the MPC875 using idle time recently. This Post records the

Code-reading2.1 study Notes-Linux general technology-Linux programming and kernel information, below is the details to read. Objective: to test the compiler's processing of undefined numbers The procedure is as follows: # Include Int main ()

Python2.6.3 -- Linux general technology-Linux programming and kernel information. The following is a detailed description. We are pleased to announce the release of Python BRL. 3, a bugfix release of Python 2.6.2, on October 2, 2009. Python 2.6 is

1. install hdparmyuminstallhdparm-y. 2. use the hdparm command to read the SSD hard disk. Hdparm-t/dev/sda1SSH can be used to evaluate the SSD read rate by executing the above commands. NOTE: & ldquo;/dev/sda1 & rdquo; indicates the drive number of

Hello everyone, I am a newbie. I have some questions to ask .... -- Linux general technology-Linux technology and application information. for details, refer to the following section. The hosts file cannot be directly executed. after decompression,