utils upgrade

utils/.local/bin/len

@@ -1,4 +1,24 @@
 #!/usr/bin/env bash
 set -eo pipefail
 
-echo -n "$@" | wc -c | awk '{print $1}'
+if [[ "$1" == "-h" || "$1" == "--help" ]]; then
+    cat <<EOF
+Usage: $(basename "$0") [-h] <string>
+
+Display length of a string.
+
+Options:
+    -h, --help    Show this help message
+
+Arguments:
+    string        String to measure
+
+EOF
+    exit 0
+fi
+
+if [[ ! -t 0 ]]; then # Read from stdin (pipe)
+    wc -c | awk '{print $1}'
+else # Read from arguments
+    echo -n "$@" | wc -c | awk '{print $1}'
+fi