15 lines
256 B
Ruby
15 lines
256 B
Ruby
|
def last_rrd_count
|
||
|
|
val = 0.0
|
||
|
|
handle = IO.popen("rrdtool lastupdate power.rrd")
|
||
|
|
handle.each_line do |line|
|
||
|
|
m = line.match("^[0-9]*: ([0-9.]*) [0-9.]*")
|
||
|
|
if m
|
||
|
|
val = m[1].to_f
|
||
|
|
break
|
||
|
|
end
|
||
|
|
end
|
||
|
|
return val
|
||
|
|
end
|
||
|
|
|
||
|
|
puts last_rrd_count
|