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mode? : $ Mode = '/a = (\ d +) B = (? : \ D +) c = (\ d + )/'; In this way, the matching result will become: array (size=3)=> string 'a=4b=98c=56' (length=11)=> string '4' (length=1)=> string '56' (length=2) Of course, we can also give it a unique name inside the brackets. The naming sub-group is acceptable (? For example: $ mode = '/a = (\ d +) B = (? P The result is as follows: array (size=5)=> string 'a=4b=98c=56' (length=11)=> string '4' (length=1) 'sec' => string '98' (length=2)=> string

new application in the new window. You can modify the name of your current window. In the current example, the top program I run, so top is the name of the window. If you want to rename, you only need to press: CTRL-B The status bar changes. You can rename the current window. Once multiple windows are created in one session, we need to move them between these windows. Windows are organized together like arrays. Each window is marked with numbers starting from 0 and you want to quickly jump to

Vi/Vim Picture copyright: lampbrother Note: After Entering Vim/Vi, the command mode is used by default. 1) Basic commands AAdd text behind the cursor IInsert text before the cursor : WqSave changes and exit ZZShortcut Key, save the modification and exit : Q!Exit Without saving changes : WSave changes 2) basic operations UCancel the previous operation Ctrl + r Restore the Undo operation in the previous step : Set nuSet row number : Set nonuCancel row number GgTo the f

Project structure:Database:/*sqlyog Ultimate v12.09 (+ bit) mysql-5.5.53:database-hibernate01************************************************ *!40101 set NAMES UTF8 */;/*!40101 set sql_mode= ' */;/*!40014 set @[emailprotected]@ Unique_checks, unique_checks=0 */;/*!40014 SET @[emailprotected] @FOREIGN_KEY_CHECKS, foreign_key_checks=0 */;/ *!40101 set @[emailprotected] @SQL_MODE, sql_mode= ' No_auto_value_on_zero ' */;/*!40111 set @[email Protected] @SQL_NOTES, sql_notes=0 */; CREATE DATABASE/*!32

user's directory -V Show instruction execution Process -T Treat a linked file as a normal file Mv[ function Description ]Move and rename files#mv can manipulate files, rename directories, and move them[ syntax Format ]mv[ parameters [ source files ] [ target files ][ option parameter ] Parameters Description -B If you need to overwrite the file, back up before overwriting -I. Interactive oper

character\ nto find line breaksrepeating character matching{N,m} matches the previous item at least n times, but cannot exceed m times{N,} matches the previous item n or more times{n} matches the previous item n timesN? Matches the previous item 0 or 1 times, which means the previous item is optional, equivalent to {0,1}n+ matches the previous item 1 or more times, equivalent to {1,}n matches the previous item 0 or more times, equivalent to {0,}n$ ma

Androidmanifest.xml file, and the Project.Properties file contains the string android.library=true .3) providing additional Android Assets and resourcesIf you need to add Assets to your Unity application that should being copied unchanged into the output package, import them I Nto the assets/plugins/android/assets directory. They appear in the assets/directory of your APK, and is accessed by using the Getassets () Android API from your Java cod E.2.

(Beanname, This. Getapplicationcontext (), method);6}Else {7Handlermethod =NewHandlermethod (handler, method);8 }9 TenHandlermethod Oldhandlermethod = (handlermethod) This. Handlermethods.Get(mapping); One if(Oldhandlermethod! =NULL!oldhandlermethod.equals (Handlermethod)) {//does not allow one mapping to correspond to multiple Handlermethod A Throw NewIllegalStateException ("ambiguous mapping found. Cannot map '"+ Handlermethod.getbean () +"' Bean method \ n"+ Handl

external hosts, track and isolate hardware and software issues, and test, evaluate, and manage networks. ping -b 192.168.1.1, Ping the Gateway ping -c 10 192.168.1.2, ping specified number of times ping -c 10 -i 0.5 192.168.1.2, interval and number of times limit the ping ping -c 5 www.baidu.com, Ping the site through the domain name on the public website NetstatNetstat [-accefghilmnnoprstuvvwx][-aUsed to display statistics related to IP, TCP, UDP, and ICMP protocols,

] [host name or IP address]Determine the status of networks and external hosts, track and isolate hardware and software issues, and test, evaluate, and manage networks. ping -b 192.168.1.1, Ping the Gateway ping -c 10 192.168.1.2, ping specified number of times ping -c 10 -i 0.5 192.168.1.2, interval and number of times limit the ping ping -c 5 www.baidu.com, Ping the site through the domain name on the public website NetstatNetstat [-accefghilmnnoprstuvvwx][-aUsed to d

192.168.0.0 netmask 255.255.255.0 GW 172.16.0.1How to modify the network card MAC 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