How to open .CAT files on Linux
To open .CAT files on Linux, open the .cat file from your file manager with open with..
Step-by-step instructions
- Open the .CAT file from your file manager with Open With.
- Choose an installed Linux app that supports this format.
Recommended software
- VS Code
- Notepad++/TextEdit
- jq (CLI)
Alternative methods
- Open .CAT in a browser-based viewer if desktop apps fail.
- Try opening .CAT on Linux with a secondary app to rule out app-specific issues.
- Convert .CAT only with trusted tools when direct opening is not possible.
Common issues
.CAT file does not open
This usually means the required app is missing or the .CAT file is incomplete.
- Install or update a compatible application.
- Verify the file came from a trusted source and was fully downloaded.
- Try opening the file in an alternative app on another platform.
Security note
Only open .CAT files from trusted senders.