In order to set up my environment, I did such steps:
1. access my terminal on the CUSP ADRF
2. create an environmental variable: export PUI2018=""
3. check the full path: echo $PUI2018
4. save an environmental variable permanently:
a. nano .bashrc
b. Add lines: export PUI2018="~/PUI2018"
c. Add lines: alias pui2018="cd $PUI2018"
5. terminal reads the new version of the file as I modified it and store the new env variable and alias: source ~/.bashrc
