Code Editor 
vi, nano, Geany 
Here we will introduce three kinds of code editor: vi, nano and Geany. Among them, nano and vi are used to 
edit files directly in the terminal. And Geany is an independent editing software, which is recommended for 
begainer. We will use the three editors to open an example code "Hello.c" respectively. First we will show how 
use vi and nano editor: 
 
First, use cd command to enter the sample code folder. 
cd ~ 
cd ~/Freenove_Ultimate_Starter_Kit_for_Raspberry_Pi/Code/C_Code/00.0.0_Hello 
 
Use the vi editor to open the file "Hello.c", then press ": q" and “Enter” to exit. 
vi Hello.c 
 
As is shown below: 
 
 
 
Use the nano editor to open the file "Hello.c", then press " Ctrl+X " to exit. 
nano Hello.c