First thing to fix is the command used by efi_resource:
-COMMAND = "[ -d /sys/firmware/efi ] && cat /var/log/kern.log* | grep -m 1 -o --color=never 'EFI v.*' || true" +COMMAND = "[ -d /sys/firmware/efi ] && grep -m 1 -o --color=never 'EFI v.*' /var/log/kern.log* || true"
First thing to fix is the command used by efi_resource:
-COMMAND = "[ -d /sys/firmware/efi ] && cat /var/log/kern.log* | grep -m 1 -o --color=never 'EFI v.*' || true"
+COMMAND = "[ -d /sys/firmware/efi ] && grep -m 1 -o --color=never 'EFI v.*' /var/log/kern.log* || true"