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