Look at incoming requests for URL
varnishlog -c -m RxURL:"/somepage.html"
Look at requests made to the backend for URL
varnishlog -b -m TxURL:"/somepage.html"
Requests for one specific host
varnishlog -c -m RxHeader:"Host: somehost.com"
See cache age for a specific host
varnishlog -c -m RxHeader:"Host: somehost.com" | grep Age
Test VCL compilation
varnishd -C -f /path/to/file.vcl
Ban all URLs
varnishadm -S /path/to/secret -T :6082 "ban.url /"
View Ban List
varnishadm -S /path/to/secret -T :6082 "ban.list"
Real time URLs being sent to backend
varnishtop -b -i TxURL
List backend traffic
varnishlog -b -o
List URLs going to backend
varnishlog -b -o -i TxURL | grep TxURL | awk '{print $4}'