Display the version of Wget.
Print a help message describing all of Wget’s command-line options.
Go to background immediately after startup. If no output file is specified via the ‘-o’, output is redirected to wget-log.
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’.