How to use find command to find all files with extensions from list?

Question

I need to find all image files from directory (gif, png, jpg, jpeg).

find /path/to/ -name \"*.jpg\" > log

How to modify this string to f

Answer 1

in case files have no extension we can look for file mime type

find . -type f -exec file -i {} + | awk -F': +' '{ if ($2 ~ /audio|video|matroska|mpeg/) print $1 }'

where (audio|video|matroska|mpeg) are mime types regex

&if you want to delete them:

find . -type f -exec file -i {} + | awk -F': +' '{ if ($2 ~ /audio|video|matroska|mpeg/) print $1 }' | while read f ; do
  rm "$f"
done

or delete everything else but those extensions:

find . -type f -exec file -i {} + | awk -F': +' '{ if ($2 !~ /audio|video|matroska|mpeg/) print $1 }' | while read f ; do
  rm "$f"
done

notice the !~ instead of ~