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#!/usr/bin/env ruby
cmd = ['dd']
countarg = nil
def decr(mult)
return {
'c' => ['c', 1],
'w' => ['c', 2],
'b' => ['c', 512],
'kB' => ['w', 500],
'K' => ['w', 512],
'MB' => ['kB', 1000],
'M' => ['K', 1024],
'GB' => ['MB', 1000],
'G' => ['M', 1024],
'TB' => ['GB', 1000],
'T' => ['G', 1024],
'PB' => ['TB', 1000],
'P' => ['T', 1024],
'EB' => ['PB', 1000],
'E' => ['P', 1024],
'ZB' => ['EB', 1000],
'Z' => ['E', 1024],
'YB' => ['ZB', 1000],
'Y' => ['Z', 1024],
}[mult]
end
def parsecount(countarg)
if countarg =~ /^(\d+)(c|w|b|kB|K|[MGTPEZY]B?)$/
if $1 == '1' then
unit, num = decr($2)
count = "count=1#{unit}"
seeks = (0...num).map do |i|
"seek=#{i}#{unit}"
end
else
count = "count=1#{$2}"
seeks = (0...($1.to_i)).map do |i|
"seek=#{i}#{$2}"
end
end
return count, seeks
else
puts "BAD COUNT"
exit 1
end
end
ARGV.each do |arg|
if arg =~ /count=(.*)/ then
countarg=$1
else
cmd << arg
end
end
if countarg.nil? then
run = cmd.join(' ')
puts "*** " + run
system(run)
else
count, seeks = parsecount(countarg)
seeks.each do |seek|
run = (cmd + [seek, count]).join(' ')
puts "*** " + run
system(run)
end
end
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