网站为什么使用不同类型的机器人 txt？
Different type of robots txt used in website why?
大家好，我浏览了很多网站，但我发现了一种不同类型的机器人 txt 任何人都可以帮助我知道为什么使用这种类型的机器人 txt
这个的优点和缺点是什么....
User-Agent: Googlebot-Images
Disallow:
User-agent: OmniExplorer_Bot
Disallow:
User-agent: FreeFind
Disallow:
User-agent: BecomeBot
Disallow:
User-agent: Nutch
Disallow:
User-agent: Jetbot/1.0
Disallow:
User-agent: Jetbot
Disallow:
User-agent: WebVac
Disallow:
User-agent: Stanford
Disallow:
User-agent: naver
Disallow:
User-agent: dumbot
Disallow:
User-agent: Hatena Antenna
Disallow:
User-agent: grub-client
Disallow:
User-agent: grub
Disallow:
User-agent: looksmart
Disallow:
User-agent: WebZip
Disallow:
User-agent: larbin
Disallow:
User-agent: b2w/0.1
Disallow:
User-agent: Copernic
Disallow:
User-agent: psbot
Disallow:
User-agent: Python-urllib
Disallow:
User-agent: NetMechanic
Disallow:
User-agent: URL_Spider_Pro
Disallow:
User-agent: CherryPicker
Disallow:
User-agent: EmailCollector
Disallow:
User-agent: EmailSiphon
Disallow:
User-agent: WebBandit
Disallow:
User-agent: EmailWolf
Disallow:
User-agent: ExtractorPro
Disallow:
User-agent: CopyRightCheck
Disallow:
User-agent: Crescent
Disallow:
User-agent: SiteSnagger
Disallow:
User-agent: ProWebWalker
Disallow:
User-agent: CheeseBot
Disallow:
User-agent: LNSpiderguy
Disallow:
User-agent: Mozilla
Disallow:
User-agent: mozilla
Disallow:
User-agent: mozilla/3
Disallow:
User-agent: mozilla/4
Disallow:
User-agent: mozilla/5
Disallow:
User-agent: Mozilla/4.0 (compatible; MSIE 4.0; Windows NT)
Disallow:
User-agent: Mozilla/4.0 (compatible; MSIE 4.0; Windows 95)
Disallow:
User-agent: Mozilla/4.0 (compatible; MSIE 4.0; Windows 98)
Disallow:
User-agent: Mozilla/4.0 (compatible; MSIE 4.0; Windows XP)
Disallow:
User-agent: Mozilla/4.0 (compatible; MSIE 4.0; Windows 2000)
Disallow:
User-agent: ia_archiver
Disallow:
User-agent: ia_archiver/1.6
Disallow:
User-agent: Alexibot
Disallow:
User-agent: Teleport
Disallow:
User-agent: TeleportPro
Disallow:
User-agent: Stanford Comp Sci
Disallow:
User-agent: MIIxpc
Disallow:
User-agent: Telesoft
Disallow:
User-agent: Website Quester
Disallow:
User-agent: moget/2.1
Disallow:
User-agent: WebZip/4.0
Disallow:
User-agent: WebStripper
Disallow:
User-agent: WebSauger
Disallow:
User-agent: WebCopier
Disallow:
User-agent: NetAnts
Disallow:
User-agent: Mister PiX
Disallow:
User-agent: WebAuto
Disallow:
User-agent: TheNomad
Disallow:
User-agent: WWW-Collector-E
Disallow:
User-agent: RMA
Disallow:
User-agent: libWeb/clsHTTP
Disallow:
User-agent: asterias
Disallow:
User-agent: httplib
Disallow:
User-agent: turingos
Disallow:
User-agent: spanner
Disallow:
User-agent: InfoNaviRobot
Disallow:
User-agent: Harvest/1.5
Disallow:
User-agent: Bullseye/1.0
Disallow:
User-agent: Mozilla/4.0 (compatible; BullsEye; Windows 95)
Disallow:
User-agent: Crescent Internet ToolPak HTTP OLE Control v.1.0
Disallow:
User-agent: CherryPickerSE/1.0
Disallow:
User-agent: CherryPickerElite/1.0
Disallow:
User-agent: WebBandit/3.50
Disallow:
User-agent: NICErsPRO
Disallow:
User-agent: Microsoft URL Control - 5.01.4511
Disallow:
User-agent: DittoSpyder
Disallow:
User-agent: Foobot
Disallow:
User-agent: WebmasterWorldForumBot
Disallow:
User-agent: SpankBot
Disallow:
User-agent: BotALot
Disallow:
User-agent: lwp-trivial/1.34
Disallow:
User-agent: lwp-trivial
Disallow:
User-agent: http://www.WebmasterWorld.com bot
Disallow:
User-agent: BunnySlippers
Disallow:
User-agent: Microsoft URL Control - 6.00.8169
Disallow:
User-agent: URLy Warning
Disallow:
User-agent: Wget/1.6
Disallow:
User-agent: Wget/1.5.3
Disallow:
User-agent: Wget
Disallow:
User-agent: LinkWalker
Disallow:
User-agent: cosmos
Disallow:
User-agent: moget
Disallow:
User-agent: hloader
Disallow:
User-agent: humanlinks
Disallow:
User-agent: LinkextractorPro
Disallow:
User-agent: Offline Explorer
Disallow:
User-agent: Mata Hari
Disallow:
User-agent: LexiBot
Disallow:
User-agent: Web Image Collector
Disallow:
User-agent: The Intraformant
Disallow:
User-agent: True_Robot/1.0
Disallow:
User-agent: True_Robot
Disallow:
User-agent: BlowFish/1.0
Disallow:
User-agent: http://www.SearchEngineWorld.com bot
Disallow:
User-agent: http://www.WebmasterWorld.com bot
Disallow:
User-agent: JennyBot
Disallow:
User-agent: MIIxpc/4.2
Disallow:
User-agent: BuiltBotTough
Disallow:
User-agent: ProPowerBot/2.14
Disallow:
User-agent: BackDoorBot/1.0
Disallow:
User-agent: toCrawl/UrlDispatcher
Disallow:
User-agent: WebEnhancer
Disallow:
User-agent: suzuran
Disallow:
User-agent: VCI WebViewer VCI WebViewer Win32
Disallow:
User-agent: VCI
Disallow:
User-agent: Szukacz/1.4
Disallow:
User-agent: QueryN Metasearch
Disallow:
User-agent: Openfind data gathere
Disallow:
User-agent: Openfind
Disallow:
User-agent: Xenu's Link Sleuth 1.1c
Disallow:
User-agent: Xenu's
Disallow:
User-agent: Zeus
Disallow:
User-agent: RepoMonkey Bait & Tackle/v1.01
Disallow:
User-agent: RepoMonkey
Disallow:
User-agent: Microsoft URL Control
Disallow:
User-agent: Openbot
Disallow:
User-agent: URL Control
Disallow:
User-agent: Zeus Link Scout
Disallow:
User-agent: Zeus 32297 Webster Pro V2.9 Win32
Disallow:
User-agent: Webster Pro
Disallow:
User-agent: EroCrawler
Disallow:
User-agent: LinkScan/8.1a Unix
Disallow:
User-agent: Keyword Density/0.9
Disallow:
User-agent: Kenjin Spider
Disallow:
User-agent: Iron33/1.0.2
Disallow:
User-agent: Bookmark search tool
Disallow:
User-agent: GetRight/4.2
Disallow:
User-agent: FairAd Client
Disallow:
User-agent: Gaisbot
Disallow:
User-agent: Aqua_Products
Disallow:
User-agent: Radiation Retriever 1.1
Disallow:
User-agent: WebmasterWorld Extractor
Disallow:
User-agent: Flaming AttackBot
Disallow:
User-agent: Oracle Ultra Search
Disallow:
User-agent: MSIECrawler
Disallow:
User-agent: PerMan
Disallow:
User-agent: searchpreview
Disallow:
User-agent: sootle
Disallow:
User-agent: es
Disallow:
User-agent: Enterprise_Search/1.0
Disallow:
User-agent: Enterprise_Search
Disallow:
就目前而言，该文件根本没有做任何有用的事情。它实际上与以下内容完全相同：
User-agent: *
Disallow:
空 Disallow: 表示 "allow everything"，因此您也可以通过使用空 robots.txt 文件或不包含任何 robots.txt 文件来获得相同的效果全部。如果您计划允许所有人抓取所有内容，则无需列出单独的用户代理。
我只能推测这个文件存在的原因。也许它最初有：
User-agent: *
Disallow: /
作为最后两行，（以阻止上面未明确列出的任何爬虫）然后有人删除了这两行以允许一切。或者写文件的人可能误以为 Disallow: 意味着 "block everything".
大家好，我浏览了很多网站，但我发现了一种不同类型的机器人 txt 任何人都可以帮助我知道为什么使用这种类型的机器人 txt
这个的优点和缺点是什么....
User-Agent: Googlebot-Images
Disallow:
User-agent: OmniExplorer_Bot
Disallow:
User-agent: FreeFind
Disallow:
User-agent: BecomeBot
Disallow:
User-agent: Nutch
Disallow:
User-agent: Jetbot/1.0
Disallow:
User-agent: Jetbot
Disallow:
User-agent: WebVac
Disallow:
User-agent: Stanford
Disallow:
User-agent: naver
Disallow:
User-agent: dumbot
Disallow:
User-agent: Hatena Antenna
Disallow:
User-agent: grub-client
Disallow:
User-agent: grub
Disallow:
User-agent: looksmart
Disallow:
User-agent: WebZip
Disallow:
User-agent: larbin
Disallow:
User-agent: b2w/0.1
Disallow:
User-agent: Copernic
Disallow:
User-agent: psbot
Disallow:
User-agent: Python-urllib
Disallow:
User-agent: NetMechanic
Disallow:
User-agent: URL_Spider_Pro
Disallow:
User-agent: CherryPicker
Disallow:
User-agent: EmailCollector
Disallow:
User-agent: EmailSiphon
Disallow:
User-agent: WebBandit
Disallow:
User-agent: EmailWolf
Disallow:
User-agent: ExtractorPro
Disallow:
User-agent: CopyRightCheck
Disallow:
User-agent: Crescent
Disallow:
User-agent: SiteSnagger
Disallow:
User-agent: ProWebWalker
Disallow:
User-agent: CheeseBot
Disallow:
User-agent: LNSpiderguy
Disallow:
User-agent: Mozilla
Disallow:
User-agent: mozilla
Disallow:
User-agent: mozilla/3
Disallow:
User-agent: mozilla/4
Disallow:
User-agent: mozilla/5
Disallow:
User-agent: Mozilla/4.0 (compatible; MSIE 4.0; Windows NT)
Disallow:
User-agent: Mozilla/4.0 (compatible; MSIE 4.0; Windows 95)
Disallow:
User-agent: Mozilla/4.0 (compatible; MSIE 4.0; Windows 98)
Disallow:
User-agent: Mozilla/4.0 (compatible; MSIE 4.0; Windows XP)
Disallow:
User-agent: Mozilla/4.0 (compatible; MSIE 4.0; Windows 2000)
Disallow:
User-agent: ia_archiver
Disallow:
User-agent: ia_archiver/1.6
Disallow:
User-agent: Alexibot
Disallow:
User-agent: Teleport
Disallow:
User-agent: TeleportPro
Disallow:
User-agent: Stanford Comp Sci
Disallow:
User-agent: MIIxpc
Disallow:
User-agent: Telesoft
Disallow:
User-agent: Website Quester
Disallow:
User-agent: moget/2.1
Disallow:
User-agent: WebZip/4.0
Disallow:
User-agent: WebStripper
Disallow:
User-agent: WebSauger
Disallow:
User-agent: WebCopier
Disallow:
User-agent: NetAnts
Disallow:
User-agent: Mister PiX
Disallow:
User-agent: WebAuto
Disallow:
User-agent: TheNomad
Disallow:
User-agent: WWW-Collector-E
Disallow:
User-agent: RMA
Disallow:
User-agent: libWeb/clsHTTP
Disallow:
User-agent: asterias
Disallow:
User-agent: httplib
Disallow:
User-agent: turingos
Disallow:
User-agent: spanner
Disallow:
User-agent: InfoNaviRobot
Disallow:
User-agent: Harvest/1.5
Disallow:
User-agent: Bullseye/1.0
Disallow:
User-agent: Mozilla/4.0 (compatible; BullsEye; Windows 95)
Disallow:
User-agent: Crescent Internet ToolPak HTTP OLE Control v.1.0
Disallow:
User-agent: CherryPickerSE/1.0
Disallow:
User-agent: CherryPickerElite/1.0
Disallow:
User-agent: WebBandit/3.50
Disallow:
User-agent: NICErsPRO
Disallow:
User-agent: Microsoft URL Control - 5.01.4511
Disallow:
User-agent: DittoSpyder
Disallow:
User-agent: Foobot
Disallow:
User-agent: WebmasterWorldForumBot
Disallow:
User-agent: SpankBot
Disallow:
User-agent: BotALot
Disallow:
User-agent: lwp-trivial/1.34
Disallow:
User-agent: lwp-trivial
Disallow:
User-agent: http://www.WebmasterWorld.com bot
Disallow:
User-agent: BunnySlippers
Disallow:
User-agent: Microsoft URL Control - 6.00.8169
Disallow:
User-agent: URLy Warning
Disallow:
User-agent: Wget/1.6
Disallow:
User-agent: Wget/1.5.3
Disallow:
User-agent: Wget
Disallow:
User-agent: LinkWalker
Disallow:
User-agent: cosmos
Disallow:
User-agent: moget
Disallow:
User-agent: hloader
Disallow:
User-agent: humanlinks
Disallow:
User-agent: LinkextractorPro
Disallow:
User-agent: Offline Explorer
Disallow:
User-agent: Mata Hari
Disallow:
User-agent: LexiBot
Disallow:
User-agent: Web Image Collector
Disallow:
User-agent: The Intraformant
Disallow:
User-agent: True_Robot/1.0
Disallow:
User-agent: True_Robot
Disallow:
User-agent: BlowFish/1.0
Disallow:
User-agent: http://www.SearchEngineWorld.com bot
Disallow:
User-agent: http://www.WebmasterWorld.com bot
Disallow:
User-agent: JennyBot
Disallow:
User-agent: MIIxpc/4.2
Disallow:
User-agent: BuiltBotTough
Disallow:
User-agent: ProPowerBot/2.14
Disallow:
User-agent: BackDoorBot/1.0
Disallow:
User-agent: toCrawl/UrlDispatcher
Disallow:
User-agent: WebEnhancer
Disallow:
User-agent: suzuran
Disallow:
User-agent: VCI WebViewer VCI WebViewer Win32
Disallow:
User-agent: VCI
Disallow:
User-agent: Szukacz/1.4
Disallow:
User-agent: QueryN Metasearch
Disallow:
User-agent: Openfind data gathere
Disallow:
User-agent: Openfind
Disallow:
User-agent: Xenu's Link Sleuth 1.1c
Disallow:
User-agent: Xenu's
Disallow:
User-agent: Zeus
Disallow:
User-agent: RepoMonkey Bait & Tackle/v1.01
Disallow:
User-agent: RepoMonkey
Disallow:
User-agent: Microsoft URL Control
Disallow:
User-agent: Openbot
Disallow:
User-agent: URL Control
Disallow:
User-agent: Zeus Link Scout
Disallow:
User-agent: Zeus 32297 Webster Pro V2.9 Win32
Disallow:
User-agent: Webster Pro
Disallow:
User-agent: EroCrawler
Disallow:
User-agent: LinkScan/8.1a Unix
Disallow:
User-agent: Keyword Density/0.9
Disallow:
User-agent: Kenjin Spider
Disallow:
User-agent: Iron33/1.0.2
Disallow:
User-agent: Bookmark search tool
Disallow:
User-agent: GetRight/4.2
Disallow:
User-agent: FairAd Client
Disallow:
User-agent: Gaisbot
Disallow:
User-agent: Aqua_Products
Disallow:
User-agent: Radiation Retriever 1.1
Disallow:
User-agent: WebmasterWorld Extractor
Disallow:
User-agent: Flaming AttackBot
Disallow:
User-agent: Oracle Ultra Search
Disallow:
User-agent: MSIECrawler
Disallow:
User-agent: PerMan
Disallow:
User-agent: searchpreview
Disallow:
User-agent: sootle
Disallow:
User-agent: es
Disallow:
User-agent: Enterprise_Search/1.0
Disallow:
User-agent: Enterprise_Search
Disallow:
就目前而言，该文件根本没有做任何有用的事情。它实际上与以下内容完全相同：
User-agent: *
Disallow:
空 Disallow: 表示 "allow everything"，因此您也可以通过使用空 robots.txt 文件或不包含任何 robots.txt 文件来获得相同的效果全部。如果您计划允许所有人抓取所有内容，则无需列出单独的用户代理。
我只能推测这个文件存在的原因。也许它最初有：
User-agent: *
Disallow: /
作为最后两行，（以阻止上面未明确列出的任何爬虫）然后有人删除了这两行以允许一切。或者写文件的人可能误以为 Disallow: 意味着 "block everything".