How can I find out a file's MIME type (Content-Type)?

Question

Is there a way to find out the MIME type (or is it called \"Content-Type\"?) of a file in a Linux bash script?

The reason I need it is because ImageShack appears to

Answer 1

file version < 5 : file -i -b /path/to/file
file version >=5 : file --mime-type -b /path/to/file