The File Extensions Database

.$01 File Extension

What is an .$01 file?

.$01 is DOS Pipe File

Text file that contains output "piped" to it by a DOS program; often used for debugging programs; can be viewed in a text editor.

The ".$01" extension may be a dollar sign followed by other numbers as well. I.e. ".$02," ".$03," etc.

How to solve problems with $01 files

  • Associate the $01 file extension with the correct application. On :
    Windows: Right click on any $01 file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.$01 files". Mac: Right click (or Ctrl-click) the $01 file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .$01 is DOS Pipe File. Because only the current version supports the latest $01 file format. Search, therefore, e.g. on the Microsoft manufacturer website after an available .$01 is DOS Pipe File update.
  • To make sure that your $01 file is not corrupted or virus-infected, get the file again and scan it with antivirus software.
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