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similar to. Such as‘The best things in life are free‘.match(/e/); //["e"]Meta-characters in regular Metacharacters in regular expressions is a special character used to replace a class of characters with the same attributes, which can also be called a character class (character Class). . Finds a single character, in addition to line breaks and line terminators. \w Find Word characters (letters, numbers, and underscores "_"). \w Find non-word characters. \d fi

Const ReadLine = require (' Readline-sync ')//reference Readline-syncLet S = number of 2;//errorsfor (Let i = 0; i Console.log (' Please enter the name: (composed of English) ');Let user = Readline.question ();Console.log (' Please enter password: (composed of numbers) ');Let password = readline.question ();Let arr = [' Yang ', ' 123456 '];if (user = = Arr[0] Password = = arr[1]) {Console.log (' Welcome, landing success ');for (Let Yewu = 1; yewu >= 1; yewu++) {Console.log (' Please select busi

address#sudo ifconfig eth0 down network card#sudo ifconfig eth0 hw ether 00:aa:bb:cc:dd:ee and change the address.#sudo ifconfig eth0 up and then start the NICCount the number of current IP connections#netstat-na|grep Established|awk ' {print $} ' |awk-f: ' {print '} ' |sort|uniq-c|sort-r-n#netstat-na|grep Syn|awk ' {print $} ' |awk-f: ' {print '} ' |sort|uniq-c|sort-r-nTo count the IP addresses in the current 20,000 IP packets that are larger than 1

Experimental environmentthe company originally installed The RHEL 6 server employs an automatic partitioning scheme, and as the number of system users using the server continues to grow, the root partition often suffers from disk space exhaustion, occasionally causing the system to fail to boot. To address these issues, you now need to add a new SCSI hard disk to the server and migrate the data from the user directory "/Home" to the hard disk, requiring that the partition not be automatically mo

($commands)){echo "Yii command Runner (based on Yii V"). Yii::getversion (). ") \ n ";echo "Usage:". $runner->getscriptname (). "echo "\nthe following commands is available:\n";$commandNames =array_keys ($commands);Sort ($commandNames);Echo '-'. Implode ("\ n-", $commandNames);echo "\n\nto see individual command help, use the following:\n";echo "". $runner->getscriptname (). "Help }else{echo "No available commands.\n";echo "Please define them under t

to view and purge a save rule:Viewing native iptables settings: iptables-l-NTo clear all rules in a preset table filter: Iptables-fTo clear a preset table the rule in the user-defined chain in the filter: Iptables-xSave the current configuration:/etc/rc.d/init.d/iptables SaveRestart Iptables function: Service iptables restartset preset rules:Iptables-p INPUT DROPIptables-p OUTPUT ACCEPTIptables-p FORWARD DROPThe above means that when the two chain rul

Handlermethod Handlermethod Newhand Lermethod = Createhandlermethod (handler, method); Handlermethod Oldhandlermethod = handlermethods.get (mapping); Check if the configuration is ambiguous if (oldhandlermethod! = null !oldhandlermethod.equals (Newhandlermethod)) {throw new Illegalsta Teexception ("Ambiguous mapping found. Cannot map ' + Newhandlermethod.getbean () + "Bean method \ n" + Newhandlermethod + "\nto" + mapping + ": there I S already '

) Replace: The string matches the regular, and the matching successful character is replaced with the new string.split: Splits a string into an array of strings.Metacharacters ( [ { \ ^ | * + Metacharacters are part of a regular expression and must be escaped when we want to match the regular expression itself . Pre-defined Classes. finds a single character, in addition to line breaks and line terminators. (decimal point) matches any single character except for the begi

to ensure that the changes in the page numbers are the same as the changes in the two-dimensional numbers. Add a nto the class of div with a value of * , and clear the class attribute of the div itself →n* the specific background color of the corresponding number in the CSS class //fill in the corresponding div of the page with each element in dataUpdateview ();functionUpdataview () {//Traverse Data for(varr=0;r This. rn;r++){ for(v

that has a special meaning:Metacharacters description. Finds a single character, in addition to line breaks and line terminators.\w find word characters.\w Find non-word characters.\d find numbers.\d to find non-numeric characters.\s Find white space characters.\s find non-whitespace characters.\b matches the word boundary.\b Matches a non-word boundary.To find the NULL character.\ nto find newline characters.\f Find a page break.\ r to find the carr

An error was encountered while starting the HTTP service.1, did not close the selinux caused.[[email protected] etc]#/usr/local/apache2/bin/apachectl startHttpd:syntax error on line of/usr/local/apache2/conf/httpd.conf:cannot load/usr/local/apache2/modules/libphp5.so I Nto server:/usr/local/mysql/lib/libmysqlclient.so.16:cannot Restore segment prot after Reloc:permission deniedResolution: Setenforce 0[Email protected] etc]# Setenforce 0[Email protecte

, Otroslogviewer can automatically detect when the log is opened. The default log4j log mode is%D{YYYY-MM-DDHH:MM:SS,SSS}%-5p [%t]%m%nI use JBoss as 7.1 (from the JBoss profile Standalone.xml or the Web management interface to see the default log processor mode as%d{hh:mm:ss,sss}%-5p [%c] (%t)%s%e%nTo parse such a log, you can call tools---Show log4j Pattern Parser Editor in the menu.Change the associated initial configuration toPattern=timestamp leve

image >>> from PIL import Image >>> test_image = Image.open (' DATA/TEST_IMAGE.J PG ') # The image is a RGB image with a size of 8x8 pixels. >>> print ' Image Mode:%s '% test_image.mode Image mode:rgb >>> print ' Width:%s px, Height:%s px '% ( Test_image.size[0], test_image.size[1]) width:4 px, height:4 px # get the pixel values from the image and print them I Nto rows based on # The image ' s width. >>> width, height = test_image.size >>> pi

] Crawldb update:additions allowed:t Rue Crawldb update:url normalizing:true crawldb update:url filtering:true crawldb update:merging data into DB . Crawldb update:done generator:selecting best-scoring URLs due for fetch. Generator:starting generator:segment:storedir/segments/20101004092711 Generator:filtering:true generator:topn:50 G Enerator:partitioning selected URLs by host, for politeness. Generator:done. Fetcher:your ' http.agent.name ' value should be listed the ' http.robots.agents ' pro

[0]. "; return $limitStr; } To Public Function Parselimit ($limit) {return '; } After this change, you can basically meet your normal SQL requirements, but you can't use limit, because the limit method for MSSQL 2000 is the top NTo achieve this; If you feel trouble, then combine the Adodb class library, this to the MSSQL support relatively good many. To combine the Adodb class library My methods are as follows: First

| | (iptables-i input-s $black _ip-j DROP echo "$black _ip ' date +%y-%m-%h:%m:%s '" >>./deny.log Echo 1 > ./sendmail)FiDone#存在并发超过阈值的单IP就发送邮件if [[' Cat./sendmail ' = 1]];then sendmsg;fiFi}#发邮件函数function sendmsg () {NETSTAT-NUTLP | grep "SendMail" >/dev/null 2>1 | | /etc/init.d/sendmail Start >/dev/null 2>1Echo-e "From: Email address @qq.com\nto: Email address @qq.com\nsubject:someone attacking your system!! \nits Ip is ">./messageCat./black_ip.txt

install After installation, use the following command to start Apache/usr/local/apache2/bin/apachectl start Installing PHP Tar zxvf php-5.2.6.tar.gz CD php-5-2.6 ./configure--prefix=/usr/local/php--with-apxs2=/usr/local/apache2/bin/apxs--with-mysql=/usr/local/mysql-- With-config-file-path=/usr/local/php/etc--with-jpeg-dir=/usr/local/jpeg6/--with-png-dir=/usr/local/libpng/-- with-gd=/usr/local/gd2/--with-freetype-dir=/usr/local/freetype/--enable-trace-vars--with-zlib-dir=/usr/local/ zlib2/ Make

interrupt * thread. * * nested = Irq_settings_is_nested_thread (DESC); if (nested) {if (!NEW-GT;THREAD_FN) {ret =-einval; Goto Out_mput; } * * Replace the primary handler which is provided from * Driver for non nested Handling by the * dummy function which warns when called. * * New->handler = Irq_nested_primary_handler; else {if (Irq_settings_can_thread (desc)) {ret = irq_setup_forced_threading (new); if (ret) goto out_mput; } * * Create a handl

This article describes a python to find Webshell script code, in addition to looking for the Webshell function also has a whitelist function, as well as the discovery of malicious code to send e-mail alerts and other functions, interested friends can test their own to see the effect. The specific functional code is as follows: #!/usr/bin/env python #-*-coding:utf-8-*-import OS import sys import re import smtplib #设定邮件 fromaddr = "smtp.qq.co M "Toaddrs = [" voilet@qq.com "] username =" Voi

//ethgettransactionreceipt send = web3jclient.getweb3j (). Ethgettransactionreceipt (Txhash). Send ( ); Ethtransaction send1 = web3jclient.getweb3j (). Ethgettransactionbyhash (Txhash). Send (); BigInteger transactionreceipt = Send1.gettransaction (). Get (). Getgasprice (); BigInteger gasused = Send.gettransactionreceipt (). Get (). getgasused (); public void Parseinput () {String inputdata = "0xa9059cbb0000000000000000000000006a2972e43f38f0b8217c119394d9b5a4c d116e9c0000000000000000