#!/usr/bin/ruby
class Clean
def initialize()
@list = "| ls /var/cache/apt/archives/*.deb"
@th = 2
@version = []
@cur_name = ""
end
def main()
IO.foreach(@list) {|line|
name,ver = line.scan(/([^_]*)_(.*)\.deb/)[0]
if (name == @cur_name)
@version.push(ver)
else
spit(name, ver)
end
}
spit()
end
def spit(name="", ver="")
@version.sort! {|a,b|
system("dpkg --compare-versions #{a} '>' #{b}") == 0 ? 1:-1
}
@th.times { @version.pop }
@version.each {|v| print "#{@cur_name}_#{v}.deb\n" }
@cur_name = name
@version.clear()
@version.push(ver)
end
end
a = Clean.new
a.main()