Index: ekeyd-1.1.3/doc/60-UDEKEY01.rules
===================================================================
--- ekeyd-1.1.3.orig/doc/60-UDEKEY01.rules
+++ ekeyd-1.1.3/doc/60-UDEKEY01.rules
@@ -2,7 +2,7 @@
 
 # Detect an Entropy Key being inserted
 ACTION=="add|change", SUBSYSTEM=="tty", KERNEL=="ttyACM[0-9]*", ATTRS{idVendor}=="20df", ATTRS{idProduct}=="0001", IMPORT{program}="usb_id --export %p"
-ACTION=="add|change", SUBSYSTEM=="tty", KERNEL=="ttyACM[0-9]*", ATTRS{idVendor}=="20df", ATTRS{idProduct}=="0001", IMPORT{program}="/bin/echo ENTROPY_KEY_SERIAL=$env{ID_SERIAL_SHORT}"
+ACTION=="add|change", SUBSYSTEM=="tty", KERNEL=="ttyACM[0-9]*", ATTRS{idVendor}=="20df", ATTRS{idProduct}=="0001", IMPORT{program}="/bin/sh -c '/bin/echo ENTROPY_KEY_SERIAL=$env{ID_SERIAL_SHORT} | /bin/sed -e s:/:_:g'"
 
 # Add the /dev/entropykey/FOO symbolic link
 ACTION=="add|change", ENV{ENTROPY_KEY_SERIAL}!="", SYMLINK+="entropykey/$env{ENTROPY_KEY_SERIAL}"
Index: ekeyd-1.1.3/doc/60-UDEKEY01-UDS.rules
===================================================================
--- ekeyd-1.1.3.orig/doc/60-UDEKEY01-UDS.rules
+++ ekeyd-1.1.3/doc/60-UDEKEY01-UDS.rules
@@ -3,7 +3,7 @@
 
 # Detect an Entropy Key being inserted
 # ACTION=="add", SUBSYSTEM=="usb", DEVTYPE=="usb_device", ATTRS{idVendor}=="20df", ATTRS{idProduct}=="0001", IMPORT{program}="usb_id --export %p"
-ACTION=="add", SUBSYSTEM=="usb", ATTRS{idVendor}=="20df", ATTRS{idProduct}=="0001", IMPORT{program}="/bin/echo ENTROPY_KEY_SERIAL=$attr{serial}"
+ACTION=="add", SUBSYSTEM=="usb", ATTRS{idVendor}=="20df", ATTRS{idProduct}=="0001", IMPORT{program}="/bin/sh -c '/bin/echo ENTROPY_KEY_SERIAL=$env{ID_SERIAL_SHORT} | /bin/sed -e s:/:_:g'"
 
 # And tell the ekeyd about the new device.
 ACTION=="add|change", ENV{ENTROPY_KEY_SERIAL}!="", RUN+="/lib/udev/ekeyd-udev"