How can I test whether a text f.E. !text is written in a specific Discord Channel?

Question

So I want to make a Command in Discord which is only useable in one Channel and should send a message in another Channel!

Answer 1

Assuming you are using Discord.js, you can get the channel and other info with the message. Read that page:
https://discord.js.org/#/docs/main/stable/class/Message

Answer 2

Oh... Sorry I forgot to say this.
I'm using discord.py const InvBoy = me;