99-com.rules: fix error invalid substitution type
fix below error:
/etc/udev/rules.d/99-com.rules:10 Invalid value "/bin/sh -c
'ALIASES=/proc/device-tree/aliases; if cmp -s $ALIASES/uart0
$ALIASES/serial0; then echo 0;elif cmp -s $ALIASES/uart0
$ALIASES/serial1; then echo 1; else exit 1; fi'" for PROGRAM (char 58:
invalid substitution type)
KERNEL=="ttyAMA[01]", PROGRAM="/bin/sh -c '\
ALIASES=/proc/device-tree/aliases; \
- if cmp -s $ALIASES/uart0 $ALIASES/serial0; then \
+ if cmp -s $$ALIASES/uart0 $$ALIASES/serial0; then \
echo 0;\
- elif cmp -s $ALIASES/uart0 $ALIASES/serial1; then \
+ elif cmp -s $$ALIASES/uart0 $$ALIASES/serial1; then \
echo 1; \
else \
exit 1; \
@@ -11,9 +11,9 @@ KERNEL=="ttyAMA[01]", PROGRAM="/bin/sh -c '\
KERNEL=="ttyS0", PROGRAM="/bin/sh -c '\
ALIASES=/proc/device-tree/aliases; \
- if cmp -s $ALIASES/uart1 $ALIASES/serial0; then \
+ if cmp -s $$ALIASES/uart1 $$ALIASES/serial0; then \
echo 0; \
- elif cmp -s $ALIASES/uart1 $ALIASES/serial1; then \
+ elif cmp -s $$ALIASES/uart1 $$ALIASES/serial1; then \
echo 1; \
else \
exit 1; \
