By default, the downloaded files are named the same as the URL, and the download information and progress is written to stdout.

The -O option specifies the output filename. If a file with that name already exists, it will be replaced by the downloaded file:

$ wget http://www.knopper.net -O knopper.html.

The -o option specifies a logfile instead of printing logs to stdout:

$ wget ftp://ftp.example.com/somefile.img -O dloaded_file.img -o log

Using the preceding command will print nothing on the screen. The log or progress will be written to the log and the output file will be dloaded_file.img.

There is a chance that downloads might break due to unstable Internet connections. The -t option specifies how many times the utility will retry before giving up:

$ wget -t 5 URL

$ wget -t 0 URL