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Re: Origin Of Filename Extension Dot Separator

From John Levine <johnl@taugh.com>
Newsgroups alt.folklore.computers
Subject Re: Origin Of Filename Extension Dot Separator
Date 2026-08-18 00:07 +0000
Organization Taughannock Networks
Message-ID <11607nk$1u4d$1@gal.iecc.com> (permalink)
References <v8p8g6$ai44$1@dont-email.me> <87se4c5s1d.fsf@hyperbola.mail-host-address-is-not-set>

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According to  <anthk@not.dev.null>:
>
>Under ITS I think they were just separated by a space 

It was a dot on the DEC PDP-6 monitor that evolved into TOPS-10. I
believe TOPS-10 is where both CP/M and MS-DOS got their filename
syntax.


-- 
Regards,
John Levine, johnl@taugh.com, Primary Perpetrator of "The Internet for Dummies",
Please consider the environment before reading this e-mail. https://jl.ly

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Thread

Re: Origin Of Filename Extension Dot Separator anthk@not.dev.null - 2026-08-17 23:57 +0200
  Re: Origin Of Filename Extension Dot Separator John Levine <johnl@taugh.com> - 2026-08-18 00:07 +0000
    Re: Origin Of Filename Extension Dot Separator Bob Eager <throwaway0008@eager.cx> - 2026-08-18 11:51 +0000
      Re: Origin Of Filename Extension Dot Separator Rich Alderson <news@alderson.users.panix.com> - 2026-08-18 22:15 -0400
    Re: Origin Of Filename Extension Dot Separator Rich Alderson <news@alderson.users.panix.com> - 2026-08-18 22:13 -0400

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