# suppose I have the above commands (view, add, edit, set ,show)
# since no command except 'add' starts with the letter 'a', I want that both will work
myshell> add -name test -value 40    # first

myshell> a -name test -value 40      # second

# in the GetOptions() function, I only have for the 'add' command, the followings:
if ($command eq 'add') {
  if (GetOptions(\%hash, 'name=s', 'value=i')) {
     &doSomething();
  }
} elsif ($command eq 'edit') {
  ...
} ...