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filterfish/append_if_no_such_line.rb

Created April 18, 2009 03:36
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append_if_no_such_line.rb
append_if_no_such_line = lambda do |pattern,file,line|
unless Regexp.new(pattern).match(File.read(file))
File.open(file, "a") { |f| f.puts line }
end
end
append_if_no_such_line.call('^net.ipv4.conf.default.proxy_arp', '/etc/sysctl.conf', 'whatever')
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