ex1.bash : res=650217205854
	time: 0:01.71 real, 1.70 user, 0.00 sys
	context-switch:	39+1, page-faults: 0+191

ex1-c : res=650217205854
	time: 0:00.00 real, 0.00 user, 0.00 sys
	context-switch:	0+1, page-faults: 0+73

ex2.bash : res=20394514442037
	time: 0:01.61 real, 1.55 user, 0.00 sys
	context-switch:	4+2, page-faults: 0+195