Without the knowledge of the file extension, it is sometimes difficult to know whether a file is to be opened in an office program, is an executable program, is an archived file or one of the numerous other standardized file extensions.

Just a few clicks of the mouse, though, can quickly and easily reveal this information.

If the file you want to find is on your desktop, simply move the mouse pointer to the file.

If the file is somewhere else on your hard drive, though, first click on Start then select Explore.

Click on the folder where the file you want to identify is stored, then move your mouse to point to the file.

Click the right button on your mouse to bring up the special menu.

What Is Dmg File Extension Full File Name

Selecting this option will reveal the full file name, including the extension.

What Is Dmg File Extension Mac Follow The

On a Mac Follow the same process as described in Step 1 in the PC section to find the file.

Hold down the Command key, and click on the file in question.

If you are using a two-button mouse such as those designed for PC users, you may also right-click on the file to access this menu.

From the file information display, you may also check or uncheck the Hide Extension option to display the file extension along with the file name.

Tips Be wary of files ending in.exe.

These files are executable programs on a PC and, if not from a trustworthy source, may damage your computer.

Although most software (including name-brand products such as Word, Excel and Dreamweaver) are saved as.exe files, an executable file from an unknown source or received through unsolicited email may contain a virus.

About the Author Keith Evans has been writing professionally since 1994 and now works from his office outside of Orlando.

He has written for various print and online publications and wrote the book, Appearances: The Art of Class.

Evans holds a Bachelor of Arts in organizational communication from Rollins College and is pursuing a Master of Business Administration in strategic leadership from Andrew Jackson University.