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Ruby String class extensions for checking file permissions
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| class String | |
| MODES={"r" => :readable?, "w" => :writable?, "x" => :executable?} | |
| def permission?(file) | |
| self.split(//).inject(true) { |can, m| can && MODES.include?(m) && File.send(MODES[m], file) } | |
| end | |
| end | |
| "rw".permission?("Makefile.PL") | |
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