Along with Master Zhao learn CTF, here is my learning record
?file=/flag
? File = / var / log / nginx / access.log: Logging includes the ngnix
Inserted inside the user-agent: bbbbbbb; aaaaaaaaaaaaaa <php phpinfo ()??>
Then try refer Head
Wanted to pass sentence, but my knife looks like a problem, had to pass a phpinfo do a demonstration Orz