Only display requests to paths matching a regular expression

Display Varnish logs.
More information: <https://varnish-cache.org/docs/trunk/reference/varnishlog.html>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

varnishlog -q 'ReqURL ~ "{{regex}}"'

click the source code to copy install varnishlog on any operating system with command-not-found.com