The power of UNIX


You can combine loops and text input files to do parametric testing

for i in 1 2 3 4 5; do
  for j in 1 2 3 4 5; do
    sed 's/I/$i/,s/J/$j/' < template > infile
    program < infile > outfile.$i.$j
  done
done

Or control the boot process of a linux system: sysvinit