added a bunch of helper scripts

csvfix.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+# Check if filename parameter is provided
+if [ $# -eq 0 ]; then
+    echo "Usage: $0 <csv_filename>"
+    echo "Example: $0 data.csv"
+    exit 1
+fi
+
+CSV_FILE="$1"
+
+# Check if file exists
+if [ ! -f "$CSV_FILE" ]; then
+    echo "Error: File '$CSV_FILE' not found!"
+    exit 1
+fi
+
+echo "Processing file: $CSV_FILE"
+echo "========================================"
+
+# Count prefixes from first column
+echo -e "\n=== Total number of unique prefixes ==="
+cut -d',' -f1 "$CSV_FILE" | sort | uniq | wc -l
+
+# Readable output format
+echo "=== Formatted output ==="
+echo "Prefix -> Count"
+echo "---------------"
+cut -d',' -f1 "$CSV_FILE" | sort | uniq -c | sort -nr | awk '{printf "%-20s -> %d\n", $2, $1}'