#! /bin/bash

if [[ $(file "./foo.txt") in *mp4* ]]
then
    echo "it's text!"
else
    echo "it's not text"
fi

exit


//**//


./makemp4.sh: line 3: conditional binary operator expected
./makemp4.sh: line 3: syntax error near `in'
./makemp4.sh: line 3: `if [[ $(file "./foo.txt") in *mp4* ]]'