readded udpated scripts directory

scripts/normdate

@@ -0,0 +1,47 @@
+#!/bin/bash
+# normdate--Normalizes month field in date specification to three letters,
+#  first letter capitalized. A helper function for Script #7, valid-date.
+#  Exits with 0 if no error.
+
+monthNumToName()
+{
+    # Sets the 'month' variable to the approrpriate value.
+    case $1 in
+        1 ) month="Jan"  ;;  2 ) month="Feb"  ;;
+        3 ) month="Mar"  ;;  4 ) month="Apr"  ;;
+        5 ) month="May"  ;;  6 ) month="Jun"  ;;
+        7 ) month="Jul"  ;;  8 ) month="Aug"  ;;
+        9 ) month="Sep"  ;;  10 ) month="Oct"  ;;
+        11 ) month="Nov"  ;;  12 ) month="Dec"  ;;
+        * ) echo "$0: Unknown month value $1" >&2
+            exit 1
+    esac
+    return 0
+}
+
+# BEGIN MAIN SCRIPT--DELETE OR COMMENT OUT EVERYTHING BELOW THIS LINE IF
+#  YOU WANT TO INCLUDE THIS IN OTHER SCRIPTS.
+# =================
+# Input validation
+if [ $# -ne 3 ] ; then
+    echo "Usage: $0 month day year" > &2
+    echo "Formats are August 3 1962 and 8 3 1962" >&2
+    exit 1
+fi
+if [ $3 -le 99 ] ; then
+    echo "$0: expected 4-digit year value." >&2
+    exit 1
+fi
+
+# Is the month input format a number?
+if [ -z $(echo $1|sed 's/[[:digit:]]//g') ] ; then
+    monthNumToName $1 
+else
+# Normalize to first 3 letters, first upper- and then lowercase.
+    month="$(echo $1|cut -c1|tr '[:lower:]' '[:upper:]')"
+    month="$month$(echo $1|cut -c2-3 | tr '[:upper:]' '[:lower:]')"
+fi
+
+echo $month $2 $3
+
+exit 0