I see in some places that I need to chmod certain directories 777 and others 0777. I don't really see a difference. Is there one?

Well since there is no 0777 I think not LOL typo no doubt.<br /><br />777 is the highest you can set with that being all permissions for everyone. Come attack me !

I've seen it several times, and when I actually used that command:<br />chmod 0777 directory<br />there weren't any problems. Go figure.

Actually chmod does technically have 4 digits.<br />I think if you leave any digits off, it's presumed to be a zero.<br /><br />From: http://www.ss64.com/bash/chmod.html<br /><br />The first digit is the user who owns it. (u)<br />The second is other users in the file's group (g)<br />The third is other users not in the file's group (o)<br />The fourth is All Users (a)

The hidden digit

Hi,<br />If you give chmod only three digits, then the highest bit is assumed to be zero. So, "chmod 077"=="chmod 777".<br />That highest bit means:<br />4=setUID<br />2=setGID<br />1=sticky<br />If you don't know what those mean, don't screw around with them.