There are essentially four ways to customize your benchmark scripts. First, you can simply run programs that don't have complex setup or cleanup directly. A small shell script aptime.sh is included in the distribution that executes and and measures a single command. The configuration cksum.ap uses aptime.sh to run various checksumming programs.
Section Hooks describes how to benchmark new file systems or add functionality to the existing benchmarking scripts. To replace the existing benchmarking scripts (e.g., postmark.sh and compile.sh with your own benchmarks, See New Workloads. To replace the file-system setup scripts with scripts from your own domain, See New Benchmark Domains.