added readings index up to L-1144

readings_index/lesungen_script

@@ -1,14 +1,22 @@
-#!/bin/zsh
-printf "start at reading no. L-"
-read -r start_no
+#!/bin/bash
+if [ -n "$1" ]; then
+	printf "start at reading no. L-"
+	read -r start_no
+else
+	start_no="$(tail -n1 readings_index | cut -f3)"
+fi
 for ((n=$start_no;n<=4000;n++)); do
 	printf "index of reading no. L-%s:" "$n"
 	read -r index
-	if [ "$index" -gt 2200 ]; then
+	if [ "$index" = "" ]; then
+		continue
+	elif [ "$index" -gt 2200 ]; then
 		echo "Kanji from third book. Just adding index and reading index for now"
 		printf '%s\t\t%s\n' "$index" "$n" | tee -ai readings_index
-	else
+	elif [ "$index" -gt 0 ]; then
 		line="$(grep -P "^$index\t" lesungen)"
 		printf '%s\t%s\n' "$line" "$n" | tee -ai readings_index
+	elif [ "$index" -eq 0 ]; then
+		n="$(( n - 2 ))";
 	fi
 done