> unshare -rm bash -c "mount -t tmpfs tmpfs /proc && uu-uptime"
uptime: could not retrieve system uptime
> unshare -rm bash -c "mount -t tmpfs tmpfs /proc && /home/a/bin/gnu9.11/gnuuptime"
21:44:10 up 490 days 23:12, 2 users, load average: 1.15, 0.98, 0.49
