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1、七个问题让你了解专有软件，开源软件和自由软件的区别Thesevenproblemletsyouunderstandthedifferencebetweenproprietarysoftware,opensourcesoftware,andfreesoftwareA:whatisopensourcesoftware?Whatisfreesoftware?They，refreesoftware?Manypeopleoftenuseopensourceandfreesoftwareareoftenconfused,peoplecombinethesetwoconceptsofo
2、pensourcesoftwareandfreesoftwaremixedtogether,infact,whenIfirststoodonthepodiumatHUSA,hisunderstandingofopensource,onlynarrowpositioningisfree,opensourcecode・Nowonderyou'rebeinglaughedatbyanexpertbelow.Yourunderstandingofopensourceistooshallow.Well,let'sdefinetheirdefinitionsfirstandthenf
3、indoutthedifferencebetweentheminthedefinition.Opensourcesoftwaremeansthatwhenasoftwareisreleased,thesourcecodeofthesoftwareisattachedandsuthorizedtoallowuserstochange/freelyredistribute/derivebooks,andopensourcedoesnotresistcommercialcharges・Freesoftwareisprovidedfreeofchargetotheusertous
4、ethesoftware,butwhenitisfree,thereareusuallyotherrestrictions,suchasthesourcecodeisnotnecessarilyopen,andtheuserdoesnotuse,copy,modifyandredistributeresearch,right・Freesoftwareisanideologicalmovement,emphasizingthefreedomoftheusertousethesoftware.Thatis(1)itcanrunfreely;(2)copyfreely;(3)c
5、anbemodifiedfreely;(4)freelyreissued・Thefreedomhereisnotpricefree・It'snotabouttheprice,buttheuseofthesoftwaretobefreetoallusers・(inEnglish,FREEmeansfreeandfree,suchasfreespeech,freenightsnack)(opensourcesoftware,or,freesoftware)VSfreesoftwareFreesoftwareisonlyavailablefreeofchargetousersa
6、nddoesnotcontaincontentthatexposesitssourcecode・Inthecaseoffreesoftware,thepurposeoffreeisonlyfromthefollowingthree:whentheusermore,freesoftware,andthentakesomeothervalue-addedservicesandothermeanstocollectfees.Isaidthis,whatwethink:?That'sright・3Q‘stwobigbrothersareallofthistype・IfTXopen
7、sourceQQ,weknowthatthecommunicationprotocol,mighthavedone・Similarly,opensourcesoftwaresimplyattachessoftwaresourcecodetosoftwarereleasesandallowsuserstochange/freelyredistribute/derivework・Commercialsoftwaredoesnotresistbusinesscharges,soopensourcesoftwareisnotneces
