There's an interesting discussion going on now in an Experts Exchange Group —
Attachments with no extension
. This reminded me of questions that come up here at EE along the lines of, "How can I tell the type of file from its cont…
Learn how to find files with the shell using the find and locate commands.
Use locate to find a needle in a haystack.: With locate, check if the file still exists.: Use find to get the actual location of the file.: