Show Squid Hitrate

Install Squidclient i.e. with

apt-get install squidclient

Than the Command: 

squidclient -h 127.0.0.1 -p 3128 mgr:utilization

will give some results, i.e.

client_http.kbytes_out = 131295

client_http.hit_kbytes_out = 70039