Fix helptext function of scripts

scripts/prepare.sh

@@ -1,20 +1,31 @@
 #!/bin/bash
 
-UBVINFO=/usr/share/unifi-protect/app/node_modules/.bin/ubnt_ubvinfo
+if [ -z "$UBVINFO" ] ; then
+	UBVINFO=/usr/share/unifi-protect/app/node_modules/.bin/ubnt_ubvinfo
+fi
+
+function helptext() {
+	echo "Usage: $0 *_0_rotating_*.ubv"
+}
+
+if [ -z "$1" ] ; then
+	helptext
+
+	exit 1
+elif [ "$1" == "--help" ] ; then
+	helptext
 
-if [ [ -z "$1" ] -or [ "$1" = "--help" ] ] ; then
-	echo "Usage: $0 *_0_rotating_*.ubv" >&2
-	exit 2
+	exit 0
 fi
 
 
 while [ -n "$1" ]
 do
-	$UBVINFO -t 7 -P -f "$1"
+	$UBVINFO -t 7 -P -f "$1" > "$1.txt"
 	if [ "$?" != "0" ] ; then
 		echo "ubnt_ubvinfo invocation failed!" >&2
 		exit 1
 	fi
 
 	shift
-done
+done

scripts/remux.sh

@@ -2,11 +2,17 @@
 
 NATIVE_CMD=./Remux
 
-if [ [ -z "$1" ] -or [ "$1" = "--help" ] ] ; then
-	echo "Usage: $0 [file1] [file2] [etc]" >&2
-	exit 2
-fi
+function helptext() {
+	echo "Usage: $0 [file1] [file2] [etc]"
+}
 
+if [ -z "$1" ] ; then
+	helptext
+	exit 1
+elif [ "$1" = "--help" ] ; then
+	helptext
+	exit 0
+fi
 
 while [ -n "$1" ]
 do
@@ -29,4 +35,4 @@ do
 		echo "Extraction of primitive stream failed for ${ubv}." >&2
 		exit 1
 	fi
-done
+done