.TH HOST 1 "2009-08-18" "host v0.0" "host" .if n .ad l .nh .SH "NAME" host \- look up hostnames or IPs .SH "SYNOPSIS" \fBhost\fR [\fB-46r\fR] \fIhost\fR .SH "DESCRIPTION" \fBhost\fR looks up \fIhost\fR (hostname or IP address) and returns the results, one item per line. That is, it will either perform a DNS or RDNS lookup, depending on the input. .SS "OPTIONS" .IP "\fB-4\fR" Only perfom IPv4 lookups .IP "\fB-6\fR" Only perform IPv6 lookups .IP "\fB-r\fR" Always print the RDNS