[usey@nose :~]$ time sleep 1

real    0m1.031s
user    0m0.000s
sys     0m0.004s
[usey@nose :~]$ time sleep 1

real    0m1.014s
user    0m0.000s
sys     0m0.004s
[usey@nose :~]$ time

real    0m0.000s
user    0m0.000s
sys     0m0.000s
[usey@nose :~]$ sleep 3
[usey@nose :~]$ time

real    0m0.000s
user    0m0.000s
sys     0m0.000s
[usey@nose :~]$ time sleep 1

real    0m1.013s
user    0m0.001s
sys     0m0.003s
[usey@nose :~]$