SHELL

set alias in ubuntu

# open terminal 
Ctrl+Alt+T

# open ~/.bashrc_alias by running
gedit ~/.bashrc_alias # the file opened might be empty

# add you aliases and commands one alias in a line
alias name_of_alias="command you want to execute"
alias name_of_another_alias="another command you want to execute"

# save 
Ctrl+S

# for immediate effect run in terminal
source ~/.bashrc_alias

create alias ubuntu

sudo nano ~/.bashrc

#at the end of the file, add your alias
alias name_of_alias="your_command"
#save the file

source ~/.bashrc

set alias in ubuntu

# First of all open terminal

Ctrl + Alt + T

# Open ~/.bash_aliases by running below command (~/.bash_aliases not ~/.bash_alias)
gedit ~/.bash_aliases 

# Add your alias and save 
alias name_of_alias="command you want to execute"

#close terminal
then open terminal again and check