GNU Wget for downloading files

wget is a GNU free software that can be used to retrieve files using HTTP, HTTPS , FTP, FTPS. It can be used as a commend line from terminal as well as from scripts and cron jobs.

By default, Wget is very simple to invoke.
The basic syntax is:
wget [option]... [URL]
wget -r --tries=10 http://example.com/


There are many options you can set such as startup options, login and input file options, download options, directory options etc.

For more info you can visit the following urls:
GNU Wget | GNU Wget Manual