I'm not a bash script guru, so I need documentation. Here I will show you how to get/install that for RHEL 6.
All the BASH documentation is available via the bash-doc RPM, but it is not located in the RHEL base channel (rhel-x86_64-server-6), but in the RHEL Server Optional channel (rhel-x86_64-server-optional-6).
To add or remove channels from the command line you use the rhn-channel.
Now you are ready to install the bash-doc package.
And to list the installed files.
And the most interesting file is the BASH Reference Manual, as highlighted above.