The above script requests a session on c1 lasting 1 hour and using 1 cpu. For most jobs a single cpu will be sufficient, unless working with parallel programs. In this way, after 1 hour, our session will close automatically. The final line in our submission script
#PBS -q devel tells PBS which queue we would like to use. When using an interactive session the devel queue is the best queue to use because this queue makes sure that the job will be run right away so we can get our test results as fast as possible.