purpose of "." entry in a diretory

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To: kernelnewbies <kernelnewbies@xxxxxxxxxxxx>
Subject: purpose of "." entry in a diretory
From: Jason Zheng <xin.zheng@xxxxxxxxxxxx>
Date: Wed, 06 Apr 2005 12:57:33 -0700
Reply-to: kernelnewbies <kernelnewbies@xxxxxxxxxxxx>
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Can anyone explain the purpose of having the "." entry in a directory to
a kernel newbie? Is it an absolute neccesity or convenience?

thanks,

Jason Zheng


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