The //**wget**// command in Linux and Unix-like systems is used to download files from the internet via HTTP, HTTPS and FTP protocols.

Here are a few examples of how the **wget** command can be used:

  - Download a single file: <code>wget http://example-url/file.zip</code>
  - Download a file and save it with a different name: <code>wget -O newname.zip http://example-url/file.zip</code>
  - Download a file and resume a stopped or incomplete download: <code>wget -c http://example-url/file.zip</code>
  - Download files from a website recursively: <code>wget -r http://example-url/</code>
  - Download files from a website with a specific extension: <code>wget -r -A.zip http://example-url/</code>
  - Download files using a proxy: <code>wget --proxy=http://proxy-example-server:port http://example-url/file.zip</code>

**wget** command is widely used to automate the download of files, it can be scheduled to run in the background and download files at regular intervals. 

  - The **-r** option, you can download a whole website recursively; 
  - The **-A** option you can specify the type of files that you want to download;
  - The **-c** option can be used to continue a stopped or incomplete download;
  - The **-O** option can be used to specify a different name for the downloaded file.

It's also possible to use wget to download files from FTP server by specifying the ftp protocol and the credentials if required, for example:
<code>wget ftp://username:password@ftpserver/path/to/file.zip</code>