Questions tagged [file-extensions]
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71 questions
1 vote
0 answers
204 views
How can I tell Gatekeeper not to check (downloaded) files with a specific extension?
Since the upgrade to macOS 15.4, I've noticed that every time I try to open a Lilypond file, Gatekeeper blocks me from doing so: Apple could not verify "EL 38 1.ly" is free of malware that ...
- 4,248
0 votes
0 answers
61 views
File extension cannot be hidden when the file name ends with a string which exists as an extension
I have one specific file whose extension cannot be hidden: (the bottom-right file in this screenshot). If I press ⌘I, the hide extension option is ticked and greyed out: I can press RETURN, which ...
- 523
2 votes
0 answers
519 views
How can I disable file extension correction on macOS Sequoia?
I'm on Sequoia 15.1 beta version. Whenever I try to save a file with a e.g. a text editor, and it uses the standard macOS file saving dialog, it autocorrects my file endings without asking me. For ...
- 169
0 votes
0 answers
34 views
Desktop > Clean Up By > Size : The resulting arrangement makes no sense. Am I missing something?
If I run the action: Desktop > Clean Up By > Size : The resulting arrangement makes no discernible sense. Am I missing something? I have had this problem persist through many macOS updates. I do ...
- 1
0 votes
0 answers
125 views
How can one see the file extensions of images and videos on iPhone?
I have taken a few pictures and videos with an iPhone 12, which runs iOS 15. How can one see the file extensions of these images and videos on the iPhone? I don't see file extensions in the native ...
- 3,642
0 votes
0 answers
52 views
Open files with prefixed with a pattern at the beginning of file name
I have several files with names c.XXXX and fort.XXXX, where XXXX are arbitrary characters. I want these file types to open by default in Emacs or TextEdit. How to do it?
- 1
6 votes
3 answers
1k views
File with no extension will be opened by TextEdit by default. How do I change that?
File with no extension will be opened by TextEdit by default. For example, in terminal run open ~/.ssh/known_hosts will open TextEdit to edit known_hosts These files are normally just text file so I ...
- 879
2 votes
1 answer
104 views
Hide specific file extension
I have just started using Sublime Text and their workspace files have the horrible long extension ".sublime-workspace", so I want to hide that and only that extension. When I do "Cmd+I &...
- 121
1 vote
0 answers
664 views
How to locate extensions in list of macOS system settings?
I am working on a macOS file provider extension. Sometimes it cannot register itself (or more precisely its file provider domains) correctly due to some XPC issues with the NSFileProviderManager. Then ...
- 140
0 votes
1 answer
273 views
Disable macOS Finder confirmation: "Are you sure you want to add the extension to the end of the name?" [duplicate]
When I add a file extension to the end of a file name, macOS annoyingly nags me with a confirmation prompt: Are you sure you want to add the extension ".md" to the end of the name? If you ...
- 9,753
2 votes
1 answer
1k views
macOS keeps trying to open .yml files with Xcode after being told to use Atom
I use the Atom text editor, and I want to use that to open .yml files. I do the usual thing: right-click on the file Hover over 'Open with' and then choose the 'Other' option, which opens a dialog ...
- 215
2 votes
1 answer
345 views
The screen flickered for a second, now files without an extension have a folder icon instead of the usual plain paper icon
For example, touch Test would normally create a Test file without an extension that should have the usual plain paper white icon. Now it's always set to a blue folder icon. The system "knows"...
- 21
0 votes
1 answer
848 views
Keyboard shortcut to hide the extension of selected files in Finder
How can I set up a keyboard shortcut to hide the file extension of each selected file in Finder? For example, if ⇧⌘E were such a shortcut, I could conveniently press ⌘A to select all files in the ...
- 543
1 vote
0 answers
119 views
Xcode extensions disappears after system restart
I'm using the excellent SwiftFormat extension to format source code in Xcode. However every time I restart the machine the extension is not available in Xcode and when I look in System Preferences - ...
- 361
1 vote
1 answer
484 views
File extension association to LibreOffice calc in macOS
I'm using macOS Big Sur 11.5.2 and LibreOffice 7.2.0.4. I want to associate a file extension (unknown to LibreOffice, eg ".myfileExtension") to a specific LibreOffice program. In my ...
