formatting updates for Nov 2025

docs/Intro_to_Unix/materials/example_script.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# This is a comment. Comments are ignored by the shell.
+
+# $1 is the first argument passed to the script
+echo "Counting the genes in $1"
+
+# count the unique genes in the file
+u_genes=$(gunzip -c $1 | cut -f 1 | sort -u | wc -l)
+
+echo "There are $u_genes unique genes in $1"