Re: [cobalt-users] chmod

[Gerald Waugh <gwaugh@xxxxxxxxxxxxxxxxxxxxxxx>]

On Friday 02 May 2003 21:36, Manny Tau wrote:
> Quick question:
>
> What's the chmod to make a file web server writeable?
> What is it to make it world writeable?
>
> I just need to make some things clear in my cluttered head.
>
there are three sets of permissions, represented by 0-7
group-user is ordinarilly the group the owner belongs to, butr not always.
OWNER-USER    GROUP-USER   WORLD

 Number  | Permissions
   ----------+---------------------------------------------------------------
       0     |   None - cannot read or write or execute 
       1     |   Can execute, but cannot read or write
       2     |   Write-only, cannot read or execute (??)
       3     |   Write-able/executable
       4     |   Read-only, cannot write to or execute
       5     |   Read-only executable, cannot write to
       6     |   Readable Writeable file, but not executable (ie: text file)
       7     |   Readable Writeable Executable file - most programs are this

Readable (r) has a weight of 4, 
Writeable (w) has a weight of 2 
Executable (x) has a weight of 1
rwx  rwx  rwx
421 421  421
to write to the file, it needs 2 or 020  or -w- permissions.
but that wound not be much good as you probably want to read the file also
to read/write to the file, it needs 6 or 420  or rw- permissions.

If you want a cgi to read/write to the file, you can use 600 with the owner 
being the site admin

if you want the world to read/write to the file you might use 666

There are some very good resources on the internet search 
http://www.google.com/linux?hl=en&lr=&ie=ISO-8859-1&q=chmod
Where i found the above chart.
http://jgo.local.net/LinuxGuide/linux-chmod.html

Gerald
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