Improve working efficiency by using alias

Very often we need to type the same long commands each time we do the same job. By defining aliases in the .bashrc file, we can greatly improve our working efficiency.

For example, after logging in Shaheen, very often we need to change your working directory to our /project directory. Instead of typing the full command "cd /project/k1234", we can define an alias "alias cdp='cd /project/k1234'" in the .bashrc file and then use the aliased command "cdp" to change to the directory.