How do I view a file type in Linux?

To determine the file type of a file pass the name of a file to the file command . The file name along with the file type will be printed to standard output. To show just the file type pass the -b option.

How do I identify a file type?

Right-click the file. Select the Properties option. In the Properties window, similar to what is shown below, see the Type of file entry, which is the file type and extension.