Linux typically doesn't rely on file extensions; it gets a files type using "magic numbers" within the file itself. Linux apps, including GNOME Files, may still use extensions to determine file type.
There's a lot to learn about image files on the command line, from verifying file format to finding out where and when photos were taken and maybe even getting an unusual view of what they look like.
How to Use Samba File Sharing: Easy Setup for Linux and Windows Your email has been sent Learn how to install, configure, and connect to Samba for Linux & Windows ...
Get to know the Linux hosts file and how to use it Your email has been sent If you're new to Linux, there's a very handy file you'll want to learn about right away. Jack Wallen introduces you to the ...