I've seen people uploading .php files that give them command line access to a server by loading http://example.com/cli, similar to SSH, could you give me an example?
A client bought a shared hosting account from a web host that does not allow ssh and forces me to use cPanel. I abhor cPanel, it cripples my productivity by making me click around and wait for it to load a bloated gui. What I hate more is that i have to download files and then upload them to the host instead of a wget https://wordpress.org/latest.zip
I'll just ignore the unexplained downvotes this question received and keep it up because this might help someone else in the future:
Most people I've seen have called it a web based shell, or a php shell. It lets you execute arbitrary shell commands on php servers. Here are a few projects I've found:
Just be sure to use a password, and to delete the shell when you're done so that someone doesn't accidentally find it in the future.