esp8266 send AT commands

Projects General Guidance
1

Can anyone tell me How to send AT commands to esp8266 ?

2

Serial.print("AT");

3

I tried but it is not working. I also tried a flasher tool it didn't work properly.

4

We have no idea what you are using to communicate with the ESP. Describe your setup. We want to help but if you don't provide details we can only guess at what you are doing.