Where's linux programmer's guide?

["Ray Kong" <leikong@msn.com>]

I just installed the testing version, sarge, and I got nothing when I do
man on opendir and readdir.

$ man opendir
No manual entry for opendir

can someone tell me which package i should install? I am not lazy or
something, believe me, I have tried everything that's even just remotely 
likely
to have it, but no luck so far.

thanks.

Lei

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