Linux - "umask 220" in .bash_bashprofile

Hello,

i'm about to install an oracle client 11g on my RedHat and SLES Linux distribution. However, the documentation says, that i have to set "umask 220" in users profile ".bash_bashprofile" . I know that this settings just subtract bit by bit the user rights. But how does this function generelly? If this setting is set in .bash_bashprofile? What does it mean generelly for the
concernning user? Does he have an overall right of 447 for all his directories? I would be pleased, if anyone could explain me that.

 

I guess the user would have 557 permissions.

 

Oh, you're right
But what are these permissions for? For "/"?

 

I think these are the permissions for uploaded files and directories.

 

What do you mean by "uploaded"?
Files that have been put in "samba" shares?
By just creating files as a user?
Nethertheless, i don't get the point , why this is something that has to do with the oracle client insallation.