10-03-2001
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Join Date: Jul 2001
Last Activity: 16 June 2011, 4:50 PM EDT
Location: Portland, OR, USA
Posts: 1,626
Thanks Given: 2
Thanked 15 Times in 13 Posts
In many modern shells (bash, ksh), cd is actually a builtin. I believe that the reason for this, is that it executed much faster that calling an outside application for such a simple command. Some systems may have the binary available, although I'm not sure if that's for backwards-compatibility or not...