How many filename extension do you know?

filename extensions

A filename extension is a suffix to the name of a computer file applied to indicate the encoding convention (file format) of its contents. In some operating systems (for example Unix) it is optional, while in some others (such as Windows) it is a requirement. Some operating systems limit the length of the extension (such as DOS and OS/2, to three characters) while others (such as Unix) do not. Some operating systems (for example RISC OS) do not use file extensions.

Here you have most popular extensions:

.$$$ Temporary file
.$$A OS/2 program file
.$$F OS/2 database file
.$$S OS/2 spreadsheet file
.$D$ OS/2 planner file
.$DB DBASE IV temporary file
.$ED Microsoft C temporary editor file.
.$VM Microsoft Windows temporary file for virtual managers.


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Opera 9.5 beta – work in progress


Known issues:

  • GMail top menu bar broken
  • Wrong cursor on form buttons and labels
  • Plugins on UNIX might be even more broken – big changes coming up… (Do not bother filing plugin bugs on UNIX)
  • Still no sparc builds 🙁
  • [BUG 296670] Animated gif images get corrupted on Windows
  • [BUG 267632] Images don’t display when printing
  • [BUG 213115] Queued mail is sent at the next check, instead of waiting for manual action
  • [BUG 295195] Web archives are broken if you ever have changed the default action of a file type in Preferences
  • By csant

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