Being able to repeat the experiment at your leisure without digging through web server logs is valuable. Still, a shell script does indeed sound like the way to

Being able to repeat the experiment at your leisure without digging through web server logs is valuable. Still, a shell script does indeed sound like the way to go: `set` should already dump the environment as required here, and then you can exec your CGI program. (Unfortunately, it doesn’t in bash; `set -o posix` first to fix that.)