To download a compressed file using the wget command and send gzip headers, you can use the --header option and specify the Content-Encoding: gzip header.
For example, to download the file http://example.com/compressed.gz using the wget command and send gzip headers, you can use the following command:
wget --header="Content-Encoding: gzip" http://example.com/compressed.gz
This will download the file compressed.gz from http://example.com and send gzip headers to the server, indicating that the client is able to accept compressed data.
If the server supports gzip compression and the file is available in a gzip compressed format, the server will send the file in a gzip compressed format and wget will automatically decompress the file.
It is important to note that the --header option can be used to send any HTTP header to the server, and is not limited to the Content-Encoding: gzip header.
For more information about the wget command and its options, you can consult the wget documentation or search online for more information.