sudo apt updatecurl -fsSL https://download.webmin.com/jcameron-key.asc | sudo gpg --dearmor -o /usr/share/keyrings/webmin.gpgsudo nano /etc/apt/sources.listdeb [signed-by=/usr/share/keyrings/webmin.gpg] http://download.webmin.com/download/repository sarge contribsudo apt updatesudo apt install webmin -y