Lets say that you just requested a compute node with qrsh and you have an empty line.
The following changes make it so that the up arrow searches only commands that start with exactly the letters you had already typed. Normally, the up and down arrow let you select previous commands from your bash history (up) or select one of your latest commands (down, after having used up). The next change will save you a lot of time! Plus it goes nicely with the bash history changes we just made.
