Print a help message describing all of Wget's command-line options.
‘-b’
‘--background’
Go to background immediately after startup. If no output file is
specified via the ‘-o’, output is redirected to wget-log.
‘-e command’
‘--execute command’
Execute command as if it were a part of .wgetrc
(see Startup File). A command thus invoked will be executed
after the commands in .wgetrc, thus taking precedence over
them. If you need to specify more than one wgetrc command, use multiple
instances of ‘-e’.