im not sure what you mean by extension. If you mean like exe, doc, they dont have one as it's not necessary in Linux to use one as it is in Windows. All device files will be found in the /dev folder when the printer is hooked up
Shell programs should normally end in .sh, but it is not a requirement.
A domain extension is the end of a domain. For example, in the domain [ example.com ], "com" is the extension.
Folders have no extension.
Te Aro Extension ended in 1917.
Montauk Extension Railroad ended in 1902.
Wauhatchie Extension Railway ended in 1917.
Ely Valley Extension Railway ended in 1865.
Northern Adirondack Extension Railroad ended in 1890.
Oyster Bay Extension Railroad ended in 1913.
Help me
Britain's Best Drives ended on 2009-03-26.
If you want to compile a java program the name of that source code must end with extension .java