#!/bin/sh echo === With only PATH === /usr/bin/time env -i PATH=/home/josh/.local/bin:/usr/lib/ccache:/sbin:/bin:/usr/sbin:/usr/bin:. t 100000 echo echo === With 64 extra environment variables === /usr/bin/time env -i $(seq 1 64 | sed 's/.*/x&=&/') PATH=/home/josh/.local/bin:/usr/lib/ccache:/sbin:/bin:/usr/sbin:/usr/bin:. t 100000