How do I change extensions of different file types
87902
How do I change extensions of all files in a folder to one common extension when all the files have different extensions?
7044
How do I change the icon for a particular file type?
12582
How can I recursively delete all files of a specific extension in the current directory?
87893
Change File Extension Using C#
69744
How to change the list of file types which Safari will open immediately after download?
44610
How to create my own file extension like .odt or .doc?
17193
How do I change the default application for unknown file types?
152923
Reading in all files with a specific extension
119140
There is a length limit to Windows file extensions?
100029
Add context menu items to specific file extensions
143479
How do I edit configuration files?
118572
Change the default application (for a file extension) via script/command line?
121020
How do I change how executable files are handled by the file manager?
108311
How do I convert all files in a folder to a different line ending? (on Windows)
106046
How do I programmatically change file permissions?
12929
How can I determine file type without an extension on Windows?
22162
Moving files of specific type/extension from one directory to another?