Prompt, read from STDIN, read from the keyboard in Perl

IO::Prompter. This was a very simple solution using only the core language and providing a very simple way to prompt for some input. For more ... Togglenavigation PerlMaven PerlTutorial Pro Login Register Books Typekeyword: Archive About Perltutorial Introduction InstallingandgettingstartedwithPerl TheHash-bangline,orhowtomakeaPerlscriptsexecutableonLinux PerlEditor HowtogetHelpforPerl? 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Haveexceededthemaximumnumberofattempts(1000)toopentempfile/dir Useofimplicitsplitto@_isdeprecated... Other MultidimensionalarraysinPerl MultidimensionalhashesinPerl MinimalrequirementtobuildasaneCPANpackage Statementmodifiers:reversedifstatements Whatisautovivification? FormattedprintinginPerlusingprintfandsprintf Prompt,readfromSTDIN,readfromthekeyboardinPerl STDIN chomp IO::Prompter Prev Next WhengettingstartedwithPerloneofthefirstthingsyouneedto knowishowtointeractwiththeuseronthecommandline.Inotherwordsyouneedtobeableto handlebasicInputOutput(I/O). examples/prompt.pl usestrict; usewarnings; print"Yournameplease:"; my$name=; chomp$name; print"Yournameis'$name'\n"; Afterincludingthesafetynet intheformofusestrict;usewarnings; wecalltheprintfunctionthatwilldisplaythetextafteritonthescreen. Aswehavenotincluded\n(thesignrepresentingthenewline)inourstringthe blinkingcursorwillbeshownonthesamelinewherethetextwasprinted. Whenwerunthescriptatthispointitwillwaitfortheusertotypeinsomestuff andpressENTER. Oncetheuserhasdonethisthecodewillcontinuetorunandhestufftheusertypedin, includingthecharacterrepresentingtheENTERwillbeassignedtothe$name variableonthelefthandsideofthe=assignmentoperator. Themyoperatoratthebeginningofthelinedeclaresthisvariable. ThisisthewaywetellPerlthatwouldliketousethisvariablecalled$name. Oncewehavetheinputin$namewecallthechomp functionwhichhasthesolepurposeofremovingthetrailingnewline(theENTER) fromthegivenstring. Finally,justtogivesomefeedback,wecallprintagaindisplayingthecontent theuserhastypedin. IO::Prompter Thiswasaverysimplesolutionusingonlythecorelanguageandproviding averysimplewaytopromptforsomeinput.Formorecomplexandrobustsolution checkoutoneofthemodulesonCPAN. ForexampleIO::Prompter. Secureinput Youcanalso promptforapassword withouttheuser,orsomeonebehindtheirshoulders,seeingwhatisbeingtyped. Prev Next Writtenby GaborSzabo Publishedon2016-05-12 Ifyouhaveanycommentsorquestions,feelfreetopostthemonthesourceofthispageinGitHub.SourceonGitHub. Commentonthispost Author:GaborSzabo GaborwhorunsthePerlMavensitehelpscompaniessetuptestautomation,CI/CD ContinuousIntegrationandContinuousDeploymentandotherDevOpsrelated systems. GaborcanhelprefactoryouroldPerlcode-base. HerunsthePerlWeeklynewsletter. ContactGaborifyou'dliketohirehisservice. BuyhiseBooksorifyoujustwouldliketosupporthim,doitviaPatreon. Alwaysusestrictandusewarningsinyourperlcode! Chompand$/,theInputRecordSeparator Howtoreadapasswordonthecommandline? InstallingandgettingstartedwithPerl PromptforuserinputusingIO::Prompter