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curipha/fqdn_sort.rb

Created May 23, 2017 12:14
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Sort the list of FQDN (e.g. www.example.com)
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fqdn_sort.rb
#!/usr/bin/env ruby
fqdn = []
while STDIN.gets
fqdn << $_.strip
end
def s(l)
return l.split('.').reverse.join('.')
end
puts fqdn.sort {|a, b| s(a) <=> s(b) }
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