Unfortunately I got a message as follows
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sudo port install octave-devel +atlas+fltk+gcc47
WARNING: Improper use of the sudo command could lead to data loss
or the deletion of important system files. Please double-check your
typing when using sudo. Type "man sudo" for more information.
To proceed, enter your password, or type Ctrl-C to abort.
Password:
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Because my mac OS does not have a password, so I just typed 'enter'. However,
it says:
========
Password:
Sorry, try again.
Password:
Sorry, try again.
Password:
Sorry, try again.
sudo: 3 incorrect password attempts
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what should I do now?