Initial data commit

Task/Increment-a-numerical-string/UNIX-Shell/increment-a-numerical-string-2.sh

@@ -0,0 +1,7 @@
+num=5
+let num=num+1          # Increment the number
+let "num = num + 1"    # Increment again. (We can use spaces inside quotes)
+((num = num + 1))      # This time we use doublebrackets
+let num+=1             # This time we use +=
+let "num += 1"
+((num += 1))