Double backslash

src/freedombone-utils-onion

 
     mkdir /etc/torrc.d
 
-    grep "HiddenServiceDir\|HiddenServiceVersion\|HiddenServicePort" /etc/tor/torrc | grep -v "#HiddenServiceDir" >> $ONION_SERVICES_FILE
+    grep "HiddenServiceDir\\|HiddenServiceVersion\\|HiddenServicePort" /etc/tor/torrc | grep -v "#HiddenServiceDir" >> $ONION_SERVICES_FILE
 
     if ! grep "HiddenServiceVersion" $ONION_SERVICES_FILE; then
         return