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Determine file type. More information:

  • 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 {{}}

  • 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}}