[lug] shutdown question

[Gary Hodges]

If I enter "shutdown -h 6:00" this afternoon will my machine shutdown at 
6:00 PM today or tomorrow at 6:00 AM?  I want to shut it down tomorrow 
morning and forgot to run this test yesterday.

Here is the appropriate portion of the man page:
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The time argument can have different formats.   First,  it  can  be  an 
absolute time in the format hh:mm, in which hh is the hour (1 or 2 
digits) and mm is the minute of the hour (in two digits).  Second, it 
can be  in the format +m, in which m is the number of minutes to wait. 
The word now is an alias for +0.
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Gary