To make this configuration you need a webserver (Apache) running and configured.
1) Try to locate your cachemgr.cgi file which comes with the squid package, this can be done using rpm -ql command (different distro stores this file at different location), here you can also use locate/find command.
# rpm -ql squid | grep cachemgr.cgi
/usr/share/doc/packages/squid/scripts/cachemgr.cgi
/usr/share/man/man8/cachemgr.cgi.8.gz
In this case my cachemgr.cgi is in /usr/share/doc/packages/squid/scripts/ directory
2) Copy cachemgr.cgi file to your configure script alias (/var/www/cgi-bin) directory of you Apache
3) Open squid.conf file and insert following two parameters at the end of the file
cache_mgr nikesh@domain.com
cachemgr_passwd your_Password all
4) Restart your squid and open your browser and type
http://localhost/cgi-bin/cachemgr.cgi
you should see something like … , provide a configure e-mail and password (mentioned above)
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source:http://linuxpoison.blogspot.com/2008/06/13578175802376.html