You are right, I mistakenly assumed xargs truncated the command because the only thing I saw on the screen was the output of the last invocation. GNU parallel i

You are right, I mistakenly assumed xargs truncated the command because the only thing I saw on the screen was the output of the last invocation. GNU parallel is great but xargs is installed by default on OS X, BSD. I'll go ahead and update the post and fix the -print0.