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Python network programming test-host response

On the last day of the May Day holiday, write the code at will. First, the last small server responds to the UDP request. Because I only have one machine, I use the lo0 port and set the socket to SO_REUSEADDR. Server:[Python] # test of hostImport sys, socket, traceback, timeHost =''Xport = sys. argv [1]Try:Port = int (xport)Failed t ValueError:Port = socket. getservbyname (

PHP Socket,server,cient, Analog post

. . ----------------------------Stream_socket Client--------------------------- /** * @name test.php * @date Sun 00:49:00 CST 2008 * @copyright Mayong (myz) * @author Mayong (myz) * @link http://blog.111cn.net/mayongzhan/ */ $xport = "TCP"; $port = "8001"; $ip = "127.0.0.1"; $address = "{$xport}://{$ip}:{$port}"; $fp = Stream_socket

Linux through caching DNS resolution to improve the response speed of the internet! __linux

After a few days of hard and careful, found in the browser Web page with Firefox, the beginning will always see the lower left corner of a line of hints: "Resolving Host XXX ..." Appears to be waiting for DNS server to resolve domain names, idle, and decided to do a DNS cache to improve the speed of the Internet. Looking for, found a software to meet the requirements: [Xport@ubuntu ~] $ apt-cache Search "DNS" | Fgrep "Cach"DNSMASQ-A S

Let vmware workstation 5.5.3 run normally in Ubuntu 7.04 (feisty Fawn!

Today, I checked Linux Kernel modules and suddenly found that there is an old Kernel directory under/lib/modules. I went in with curiosity and found that there were some residual configurations in the result, from the perspective of name, it should be related to VMWare. Isn't it difficult to say that some shared libraries in the installer are in the kernel modules directory during the initial installation? Look at the module Directory of the new kernel. There is nothing: [

In Linux, cache DNS resolution is used to speed up online response!

These days I have been very careful and found that when I browsed the web page using Firefox, I always saw a prompt in the lower left corner at the beginning: "Parsing host xxx ..." It seems that it is waiting for the DNS server to resolve the domain name. It is idle, so I decided to make a DNS Cache to speed up the Internet! I found a software that meets the requirements: [Xport @ ubuntu ~] $ Apt-cache search "dns" | fgrep "cach"Dnsmasq-A

Test on Python network programming-socket

Because the project requires a lot of data, even though databases released by some research centers on the Internet are charged, it is a luxury for me to have three employees. (A human face recognition database requires 1000 million USD! WTF !) Try to develop a search tool by yourself... First test a small socket function (very small, the experts will pass ...) [Python] # testint of sending infomation to www.2cto.comImport sys, socket, timeHost = sys. argv [1]

In Linux, cache DNS resolution is used to increase the speed of online response.

In Linux, cache DNS resolution is used to speed up the response to the Internet-Linux Enterprise Application-Linux server application information. The following is a detailed description. When you use Firefox to browse a webpage, you will always see a prompt in the lower left corner at the beginning: "Parsing host xxx ..." It seems that the DNS server is waiting for domain name resolution, so it is idle and decides to make a DNS Cache to increase the speed! I found one: [

Today, I know that I am a person who has been poisoned by Red Hat!

The story is about whether to set MySQL to run automatically after it is installed in Ubuntu... 1. My Ubuntu version: [Xport @ ubuntu ~] $ Uname-Linux ubuntu 2.6.17-10-generic #2 SMP Tue Dec 5 22:28:26 UTC 2006 i686 GNU/Linux 2. Set the MySQL service to automatic and then cancel Automatic operation. Sample/etc/rc ?. D directory changes: /* Set the MySQL service to run automatically */[Xpor

Cacti Configuring traffic summarization

86400 604800 2678400 33053184 2. Modify the Data indexConsole-management->templates->data Templates(1) Add the 5 rrd templates just created in associated RRA ' s(2. Set Step to 60 (draw once every 60 seconds)(3, set the heartbeat to 120 (120 is the time-out)3. Modify Crontab Task*/5 * * * */usr/bin/php/var/www/cacti/poller.php >/dev/null 2>1Revision changed to*/1 * * * */usr/bin/php/var/www/cacti/poller.php >/dev/null 2>14, rows default storage data Maximum value is

History (historical) command Usage 15 cases

# pwd# service httpd stop# History | tail-338 pwd39 service httpd stop40 History | tail-3# ls-ltr# service httpd stop# | tail-635 E Xport histcontrol=erasedups36 pwd37 History | tail-338 ls-ltr39 service httpd stop[note Previous service httpd stop after pwd got erased]40 | tail-6use Histcontrol to force history to not remember specific commandsSet Histcontrol to Ignorespace and enter a space before the command that you do not want to remember

Multiple paths for storing literacy

taken to mount.Iv. Solaris-to-multipath solutionsIn general, home host + Home Magnetic array, configuration is very simple. Under the solaris10+2540m2 magnetic Array, a single command can handle Multipath:#stmsboot-D fp-eThis command will allow you to indent multiple paths to 1V. About LUN31After configuring our own LUNs with the management software of the magnetic array, we will find a LUN31, corresponding to the following dm-2, this is called Universal Xp

ZendStudio5.0 cannot be installed in linux

directory Basename: error while loading shared libraries: libc. so.6: cannot open shared object file: No such file or directory Hostname: error while loading shared libraries: libc. so.6: cannot open shared object file: No such file or directory Launching installer... The reason is: Zend Studio's built-in JRE conflicts with some class libraries in the system. Run the following command before installation: Copy content to clipboard Sudo cat ZendStudio-5_2_0.bin.bak | sed "s/export LD_ASSUME

Integrates with the centreon monitoring platform to perform secondary analysis and highchart presentation on rrdtool data

I don't know, is it true that all companies are very hardworking every week to collect statistics on the company's IDC load. To meet this requirement, you can use the monitoring platforms such as cacti or centreon to manually select the service usage at a specific time, such as load and memory. The most recent requirement is to count the maximum and minimum network traffic values for six time periods a day and register them into the book. The general method is to log on to the monitoring platfor

In Linux, it is set to allow Firefox to run Java programs, and then Dad can play chess with "Xiao Bai" at home!

Dad is fond of playing chess and has never had the opportunity to practice after he came to Suzhou. However, I was a skey, And I was overwhelmed again. On that day, I suddenly thought that I could let the "little white" play on behalf of me, Let's see if we can compete with Dad! After finding this information, I finally found it: http://www.nchess.com/. although it is not elegant, the function is also straightforward. However, because the game was developed in Java and released in the form of

Linux-basic (13) Learning Shell Script__linux

/local/bin:/usr/local/sbin:~/bin E Xport PATH # 1. Inform the user of the purpose of the program, and tell them how to enter the date format. echo "This program would try to calculate:" echo "How many days before your demobilization date ..." read-p "please input Your demobilization date (YYYYMMDD ex>20090401): "Date2 # 2. Test to see if the input is correct. Use the formal expression of Faroese ~ date_d=$ (echo $date 2 |grep ' [0-9]\{8\} ') # to see

Solaris saves ZFS data under LiveCD

need to force it into the current storage pool//However, in our case, Direct force import will cause the original pool directory and// Some of the key directory conflicts in the existing file system are not imported, so we//need to replace the root path in this pool to avoid these conflicts. lab@opensolaris:~# zpool import-f-r/mnt rpool lab@opensolaris:~# zfs list NAME USED avail refer mountpoint rpool 84.3G 49.6G 35.5k/mnt/rpool rpool/root 24.3G 49.6G 18K legacy rpool/root/s10x_u6wos_07b 24.3G

Alex's Novice Hadoop Tutorial: Lesson 9th Sqoop1 Exporting MySQL from hbase or hive

,peter2,2,paulSOURCE Hive table Import data to temp tableThe first step is to import the data from the H_employee (HBase-based external table) to the H_employee_export (Native hive table)hive> Insert Overwrite table h_employee_export select * from H_employee;Hive> SELECT * from H_employee_export;ok11peter22paultime taken:0.359 seconds, Fetched:2 row (s)Let's go see what the actual stored text file looks like.$ HDFs Dfs-cat/user/hive/warehouse/h_employee_export/000000_01,1,peter2,2,paulExport dat

Ask for help

For more information about common Linux technologies and applications, see the following. This error is reported by the small sun in the pnp command on the monitoring server. OK: Initalising OK: Using/usr/local/nagios/share/perfdata // OK: RRDTool/usr/local/rrdtool/bin/rrdtool found. ! : RRDTool/usr/local/rrdtool/bin/rrdtool not executable When I run rrdtool again -Bash: rrdtool: command not found But I will execute./rrdtool again in/usr/local/rrdtool/bin /. RRDtool 1.3.8 Copyright 1997-2009 b

Authorization detection XX talent Network

Author: Liuker Original: http://www.anying.org/thread-88-1-1.html reprint must be noted.0x1 Preface: I really don't know what to write. The current WEB penetration methods come and go. So I wrote an article using the latest project.0x2Because XX talent network was hacked, we asked our company for penetration testing. The vulnerability has been hacked several times, and the penetration is difficult.0x3Necessary information collectionIP: XXX. XX. XX. XPort

What is FTP

content of these NAT Gateway packets is scanned. After the PORT command is scanned, the IP address and port in the port mode are replaced. In this NAT gateway, the port method is no problem. However, these gateways only scan data packets on port 21. If the FTP server does not use the default port 21, the port method cannot be used. 2. The Intranet can use port to access other ftp. Why can't I use port to access my truehost FTP?The question to be discussed below is only to illustrate some princ

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