.old Backup file
Other formats
| MIME type | application/x-trash |
|---|---|
| Description | Backup file |
| Category | Other formats |
| Other extensions | .bak, .sik |
Frequently asked questions
What is a .old file?
A .old file is a “Backup file” (MIME type application/x-trash).
How do I open a .old file?
With the program that created the file. On Linux, xdg-mime query default with the MIME type shows the default application, and xdg-open opens the file with it.
How can you tell a genuine .old file?
No fixed signature at the start of the file is registered for this format; it is recognised mainly by its extension. On Linux and macOS, file --mime-type example.old shows the guessed type.
Which MIME type belongs to .old?
The MIME type is application/x-trash. In the Apache web server: AddType application/x-trash .old; in nginx: types { application/x-trash old; }.