Create shell
Delete shell
Create Shell
Create ShellMajor
Create Commands
Delete Shell
Rename Commands to Commands.java
Rename ShellMajor to ShellMajor.java
Create Shell.java
Update Commands.java
Update Shell.java
Update Shell.java
Update Shell.java
Update Commands.java
Update Commands.java
Update Commands.java
Update Commands.java
Update Commands.java
Update Commands.java
Update Commands.java