jDownloader-like command line tool or lightweight GUI App? I use jDownloader which works great, but takes a lot of time to load and surprisingly takes a lot of time also to start and stop downloads.  

I'd like to have a similar functionality* but with a command line tool or a really light-weight GUI App. (but command line preferred)  

* It mainly processes pages and links to known download sites and gets linked files and manages its downloads.
Plowshare is a command line-downloading tool for Mac OS X: http://alternativeto.net/software/plowshare/