utils upgrade

utils/.local/bin/line

@@ -1,5 +1,27 @@
 #!/usr/bin/env bash
 set -eo pipefail
 
+if [[ "$1" == "-h" || "$1" == "--help" ]]; then
+    cat <<EOF
+Usage: $(basename "$0") [-h] <lineno> <file>
+
+Display a specific line from a file.
+
+Options:
+    -h, --help    Show this help message
+
+Arguments:
+    lineno        Line number to display (1-based)
+    file          File to read from
+
+EOF
+    exit 0
+fi
+
 lineno="$1"; shift
-sed -n "${lineno}p" -- "$@"
+
+if [[ ! -t 0 ]]; then # Read from stdin (pipe)
+    sed -n "${lineno}p"
+else # Read from file
+    sed -n "${lineno}p" -- "$@"
+fi