creating own file extension
44610
How to create my own file extension like .odt or .doc?
80603
How to create a copy of a file immediately when it's created?
46279
How to clean up file extensions?
71478
How do you append to a file?
145124
How can I make a special file that executes code when read from
119140
There is a length limit to Windows file extensions?
137144
How to create folder name or file name with special characters like \ / : * ? "  |
80475
Defining my own command
16617
Getting file names without extensions
154345
how to move specific files based on their extensions
14208
How to set the default program for opening files without an extension in Windows?
116863
Create and Share a File from Internal Storage
130002
Method in Java to create a file at a location, creating directories if necessary?
103721
Changing extension of multiple files in Ubuntu 12.04
111606
How to create a file which is named like a command line argument?
66447
How can I get file extensions with JavaScript?
30932
How to associate a file extension to the current executable in C#