chmod a rwx 什么意思？為所有用戶增強(qiáng)對(duì)的讀、寫(xiě)、執(zhí)行權(quán)限chmod為決定文件權(quán)限的命令chmod[options]modefilesa代表more（所有用戶）為先添加權(quán)限r(nóng)wx三個(gè)是讀、寫(xiě)

chmod a rwx 什么意思？

為所有用戶增強(qiáng)對(duì)的讀、寫(xiě)、執(zhí)行權(quán)限chmod為決定文件權(quán)限的命令chmod[options]modefilesa代表more（所有用戶）為先添加權(quán)限r(nóng)wx三個(gè)是讀、寫(xiě)、執(zhí)行權(quán)限是文件名

PHP基礎(chǔ)課程PHP如何生成二維碼？

可以下載phpqrcode庫(kù)，然后語(yǔ)句它。一個(gè)例子：

lt?phpinclude()

QRcode::png(這里輸入網(wǎng)址的或文字)

很容易的，就幾行代碼。

工業(yè)互聯(lián)網(wǎng)的英語(yǔ)術(shù)語(yǔ)？

ADSLAsymmetric Digital Subscriber Line,atypewithdigitalsubscriberline(DSL)technology,adatacommunicationstechnologywhetherenablesfasterdatatransmissionafterwardscoppertelephonelinesthanahigh-frequencyvoice-bandmodemcanprovide.

WWW

World WideWeb,acentralizedhypertextsystemdiscovered六花禁愛(ài)TimBerners-LeeataNeXT Computer. Currently,one ofthemost popularservicesofferedontothe Internet. Web pages are viewed using browsing software like Netscape Navigator,SunMicrosystems Hot Java,orMicrosoftInternet ,Hypertext Markup Language,netsurfing,buttriple-dub.

WiFi

WirelessFidelity.Populartermfor aformthewirelessinternet.

URL

internet.

HTTP

HypertextTransferProtocol,theprotocolcommonlybgtheWorldnarrowWebtotransferHTML files.

FTP

File Transfer Protocol

COM

Comisderived fromthe wordcommercial,indicatingitslegendaryintended purposefordomainsregisteredbycommercial organizations.

HTML

Hypertext Markup Language,thetag-basedASCIIlanguageusedtocreatepagesonthe World Wide alsohypertext.

IRC

Internet Relay Chat,achatnetworkthatoperatesoverthe Internet.OriginallyevolvedfromtheUNIXtalkprogram,IRCisidenticaltothechatsystemsfoundonindustrialonline services.

DNS

Domain Name System,adatabase systemwhichlooksuphostIP addressesbasedupondomain youaskfor