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git-svn-id: svn://svn.a-k-r.org/akr/ruby-usb/trunk@598 0ecacc03-ac1b-0410-941d-e442c79421a6
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commit 738d455440d3eb4fe5ff9da768e5b6b676667ecc 1 parent 6c023cd
akr authored
Showing with 3 additions and 0 deletions.
  1. +3 −0  lib/usb.rb
3  lib/usb.rb
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@@ -20,6 +20,9 @@
# USB module is a binding for libusb.
#
+# It needs appropriate privilege to access USB.
+# For example, the process should be an member of plugdev group on Debin GNU/Linux (etch).
+#
# = Example
#
# 1. list up USB devices
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