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module Byteback
# Icky way to find out free disc space on our mount
#
class DiskFree
def initialize(mount)
@mount = mount
end
def total
all[2]
end
def used
all[3]
end
def available
all[4]
end
def fraction_used
disk_device, disk_fs, disk_total, disk_used, disk_available, *rest = all
disk_used.to_f / disk_available
end
protected
def all
disk_device, disk_fs, disk_total, disk_used, disk_available, *rest =
df.
split("\n")[1].
split(/\s+/).
map { |i| /^[0-9]+$/.match(i) ? i.to_i : i }
end
def df
`/bin/df -T -P -B1 #{@mount}`
end
end
end
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