How to download a file from URL in Linux

Use

wget "http://some.ip.in.here/website.com/IMAGENAME.ISO?md5=hUhpyFjk7zEskw06ZhrWAQ&expires=1454811899"

Explanation: There is "&" character in the url. On linux and alike systems, this makes it a background process. Solution it to enclose url in double quoutes (") so that its treated as one argument.

If you are just trying to get a reasonable filename the complex URL, you can use the output-document option.

-O file
--output-document=file

Either of these forms will work.

As noted previously, be sure none of the special characters in the URL are getting interpreted by the command parser.