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The default option that requires no installation would be to use the file command. For our code example we will work with files from the General Example Files.

file --mime-type <name of the file>
file --mime-type 6285633006_R03C01_Red.idat
6285633006_R03C01_Red.idat: application/octet-stream

Adding the -b flag returns only the MIME type for the selected file without the filename.

file --mime-type -b 9969477031_R02C01_Red.idat

Last update: October 7, 2020