Cloud Applications

Linux server maintenance count connections view some statistics on external IP server: 1) Count port 80 connections netstat-nat | grep-I & quot; 80 & quot; | wc-l12) count httpd protocol connections ps-ef | grephttpd | wc-l... linux server

Linux: Command for accessing a CD. when using a CD, floppy disk, or USB flash disk, the Linux system must first execute the mount command. The Mount command will specify these storage media as a directory in the system, and then directly access the

Related configuration optimization after LNMP is installed in Linux: 1. enable Nginx + PHPvim/etc/rc upon startup. local/home/mysql/mysqlstartulimit-SHn65535/usr/local/webserver/php/sbin/php-fpmstart/usr/local/webserver/n... related configuration

Only one source file can be used to package and decompress inux compression commands in linux. This means that before compression, you have to package all the files to be compressed into one package, and then compress the package, to compress

For more information about the importance and usage of top commands, see how to save the output information of top commands. The method for saving the output of the top command to a file is: top-n1b>topinfo.txt. this is not curious, but the

Linux/etc/services File function 1) The/etc/services file records the network service names and their corresponding port numbers and protocols. 2) Each row in a format file corresponds to a service. it consists of four fields separated by tabs or

For example, if you want to move all files in the current directory to a subdirectory, you must first create the directory mkdirmyfolder and then use the mv to move all the files. Wait. I don't want to move myfolder to myfolder. (in fact, this doesn'

[ZZ] Linux redirection file/dev/null indicates an empty device file & gt; indicates the redirection location, for example, echo & quot; 123 & quot; & gt; /home/123.txt 1 indicates stdout standard output. the default value is 1, so & quot; &

SUSELinuxHA dual-host Construction 1. preparations 1. server network planning l the host must have at least two NICs available (one Nic is used as the heartbeat Nic ); l connect the two hosts directly with a network cable (note that the location of

Step: Delete a vi Section delete a section is a common operation for editing and analyzing lengthy configuration files or log files. Briefly describe the key points for deleting the vi section. The vi overview citation does not list the last row

Deep understanding of Linux kernel -- skbuff1, skb-& gt; users and skb-& gt; dataref differences skb-& gt; users: when the number of references increases, this value and skb-& gt; dataref will both add skb-& gt; dataref: when skb is cloned, only skb-

Tcptump and wireshark work together with packet capture to check the network package. some time ago, they have been debugging the MMS program of the telecom isag, causing many problems. Therefore, you need to capture packets and check the problem

Vim script-vertical bars & amp; #39; | & amp; #39; and backslash & amp; #39 ;\& amp; #39; Directory: [-] meaning an example means that a vertical line is used to link multiple commands into a single command, which is like a semicolon in shell. Note

The solution of Ubuntu12.10 with no sound was found today that Ubuntu12.10 was installed for more than a month. I should have been so numb .. _ Not much nonsense. my situation is like this. The system can identify the sound card model. The reason

It is very convenient to find the yum package to be downloaded from yum. However, some packages are relatively large. after the installation, you can back up the package and install it locally next time. The default path is here:/var/cache/yum/open

Batch kill processes and semaphores 1. killing process ps-ef | grepprocessname | grepusername | grep-vgrep | awk {& amp; #39; print $2 & amp; #39 ;} | xargskill-9 or kill-9 'pgrepprocessname' 2. kill semaphores ipcs-s... batch kill processes and

The script that displays the file information is used to help you better understand the file content. the script aims to display the content of the file, A few more rows are summarized. 01 #! /Bin/sh0203 # showfile. sh -- display the... of a file...

Install Flash Player plug-in 1 in ubuntu. If firefox in ubuntu does not have the Flash Player plug-in, you need to install it. it is best to use either of the following methods:. Click "B" to install the missing plug-in firefox. We do not recommend

Avoid undesired echo methods. most popular Unix and Linux versions have an echo command. It contains the-n option to disable line breaks, but not all versions are the same. Some versions of echo commands use \ c as a special embedded character to

Linux ifconfig, route, and ip commands I: Instructions for Use of the three commands; 1: ifconfig can enable/disable NIC interfaces; set subnet mask and broadcast address; set the network interface mtu; 2: route to View routes; add routes; modify