minor changes

bin/hash2addr

@@ -2,15 +2,17 @@
 
 # Display help message
 if [[ "$1" == "-h" || "$1" == "--help" ]]; then
-    echo "Usage: $(basename $0) <input_string>"
+    echo "usage: $(basename $0) <input_string>"
     echo "Outputs a randomly generated IP address and port number based on the MD5 hash of the input string."
+    echo ""
     exit 0
 fi
 
 # Check that input string is provided
 if [ -z "$1" ]; then
-    echo "Error: input string not provided."
-    echo "Usage: $(basename $0) <input_string>"
+    echo "error: input string not provided."
+    echo "usage: $(basename $0) <input_string>"
+    echo ""
     exit 1
 fi