• [or gate]
• [and gate]
• [not gate]
• [xor gate]
• [nor gate]
• [nand gate]
• ...

Lets try in terminal for that write a verilog code, change the directory where it is located do the following-

>> iverilog -o testbenchfilename.vvp testbenchfilename.v
>> vvp testbenchfilename.vvp 
>> gtkwave

Lets try in terminal for that, download any of the folder, change the directory where it is downloaded do the following-

>> gtkwave