local computer=require('computer')
local sh=require('sh')

local real_before,cpu_before=computer.uptime(),os.clock()
local cmd_result=0
if...then
sh.execute(nil,...)
cmd_result=sh.getLastExitCode()
end
local real_after,cpu_after=computer.uptime(),os.clock()

local real_diff=real_after-real_before
local cpu_diff=cpu_after-cpu_before

print(string.format('real%5dm%.3fs',math.floor(real_diff/60),real_diff%60))
print(string.format('cpu %5dm%.3fs',math.floor(cpu_diff/60),cpu_diff%60))

return cmd_result