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Ruby To Convert All Files In Dir (that End In [0-9].jpg) From Jpg To Pbm

01.08.2009
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        // Ruby to convert all files in dir (that end in [0-9].jpg) from jpg to pbm
 
Dir.open('.').each { |f| `convert #{f} #{f[0..-5]}.pbm` if f =~ /[\d].jpg$/ }