Now files with no file extension will be opened in the TextEdit as a simple text files. Scroll down the UTIs list and find public.unix-executable key and change Default Application to for example TextEdit.app. Uniform Type Identifiers are used by OS X to identify common system objects, like documents, image file types, folders etc.
Open System Preferences → Section Other → Click on Default Apps icon.Ĭlick on UTIs (Uniform Type Identifiers) tab. RCDefaultApp is free file association management tool for Mac that is installed as Preference Pane to System Preferences.ĭownload RCDefaultApp → Open the DMG archive → double click on RCDefaultApp.prefPane file. Use RCDefaultApp to change default software for files without file extension However, there is a way how you can change default app for all files with no file extension found on your Mac. If you want to change default application with Finder → Get Info option, you will only change the app for the current file. Mac OS X tries to open files without extension with the Terminal app, which often causes an error message that the file doesn't contain any executable data. and called like README, READ-ME, INFO, SETTINGS, OPTIONS etc. But often these can also be found as simple text files with instructions, version history, frequently asked questions, settings etc. By default, the Mac OS X identifies files without file extension as Unix Executable File.
