Initial commit

snippets/isValisDate_cal.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+
+DATE=$1
+declare -i day
+
+if [[ ${#DATE} -ne 10 ]] ; then
+   echo ""
+   echo "Invalid Date: $DATE"
+   echo ""
+   echo -e "Usage: \033[1m$(basename $0) YYYYMMDD\033[m"
+   echo ""
+   exit 0
+fi
+
+eval $(echo $DATE | sed 's/^\(....\)\(..\)\(..\)/year=\1 month=\2 day=\3/')
+
+cal $month $year 2> /dev/null | grep -w $day > /dev/null
+if [[ $? -eq 0 ]] ; then
+   echo ""
+   echo "Valid Date: $DATE"
+   echo ""
+else
+   echo ""
+   echo "Invalid Date: $DATE"
+   echo ""
+   echo "Usage: $(basename $0) YYYYMMDD"
+   echo ""
+fi
+
+exit 0