Ruby bindings for augeas

The class Augeas provides bindings to augeas [augeas.net] library.

Usage: Setting Data

    Augeas::open do |aug|
      aug.set("/files/etc/sysconfig/firstboot/RUN_FIRSTBOOT", "YES")
      unless aug.save
        raise IOError, "Failed to save changes"
      end
    end

Usage: Accessing Data

    firstboot = Augeas::open { |aug| aug.get("/files/etc/sysconfig/firstboot/RUN_FIRSTBOOT") }

Usage: Removing Data

    Augeas::open do |aug|
      aug.rm("/files/etc/sysconfig/firstboot/RUN_FIRSTBOOT")
      unless aug.save
        raise IOError, "Failed to save changes"
      end
    end

Usage: Minimal Setup with a Custom Root

By passing NO_MODL_AUTOLOAD, no files are read on startup; that allows setting up a custom transform.

  Augeas::open("/var/tmp/augeas-root", "/usr/local/share/mylenses",
                Augeas::NO_MODL_AUTOLOAD) do |aug|
    aug.transform(:lens => "Aliases.lns", :incl => "/etc/aliases")
    aug.load
    aug.get("/files/etc/aliases/*[name = 'postmaster']/value")
  end