# file

• Give a description of the type of the specified file. Works fine for files with no file extension:

file {{path/to/file}}

• Look inside a zipped file and determine the file type(s) inside:

file -z {{foo.zip}}

• Allow file to work with special or device files:

file -s {{path/to/file}}

• Don't stop at first file type match; keep going until the end of the file:

file -k {{path/to/file}}

• Determine the MIME encoding type of a file:

file -i {{path/to/file}}