cron job setup for linux server

 I've always been using Unix box. This is my first time using Linux server Red Hat Enterprise 5.

For the unix server, it is korn shell, but for the linux server it is bash shell.

The path I set for the unix server script is PATH=$ORACLE_HOME/bin:/opt/bin:/bin:/usr/bin:/usr/ccs/bin:/GNU/bin/make:/etc:.:/usr/ucb

Obviously, this is not the case for the linux server. I only modified the oracle home part of the path for the linux server. I am not sure if I need to modify anyother path. The linux server does not seem to have /usr/ccs/bin and /usr/ucb. It has /usr/sbin and /usr/bin . I am not sure which one to use.