Linux can't determine MIME type for 3GP, 3GPP2, etc. files?
문제
When I run
file -bi 'filename'
in CentOS for 3GP, 3GPP2, etc. files, the return value is blank. For other files such as JPEG, GIF, MPEG, etc, the command returns the correct MIME type. Why is this so?
Thanks!
해결책
because the magic number for these video file type is not defined
you can take look on
man file
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