Infrastructure Software

Hi Guys,

I am trying since an hour to get the 10g installion to run under red hat 5.
done the users but my user group "oinstall" with user "oracle" does not have the
permission to execute /opt/oracle where the runinstaller is placed.
I played around with the shell but just cant get the command to work.

How can I assign read,write,execute permission to users of group "oinstall"
for all files of /opt/oracle ?

thanks a lot