This HOWTO describes how to integrate ClamAV, an anti-virus attachment scanner
and Qmail-Scanner, an anti-virus message content scanner, with an existing installation
of a qmail email server.
Shell The command-line user interface. Various shells are available under Linux, the most popular of which is Bash. Shells create an environment for you to work in, and do this by providing shortcuts, scripting facilities and customized prompts.