Added Endsem Questions

OS/endsem/bashq.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+
+# Ask for the directory
+echo "Enter directory path:"
+read dir
+
+while true; do
+    echo ""
+    echo "Menu:"
+    echo "1. Convert .txt files to .py in $dir"
+    echo "2. List ownership properties (ls -l) of all files in $dir"
+    echo "3. Count .sh files and subdirectories in $dir"
+    echo "4. Exit"
+    echo -n "Choose an option: "
+    read option
+
+    case $option in
+        1)
+            for file in "$dir"/*.txt; do
+                if [ -f "$file" ]; then
+                    new="${file%.txt}.py"
+                    mv "$file" "$new"
+                    echo "Renamed: $file -> $new"
+                fi
+            done
+            ;;
+        2)
+            ls -l "$dir"
+            ;;
+        3)
+            # Count .sh files in the given directory (errors hidden if none found)
+            sh_count=$(ls -1 "$dir"/*.sh 2>/dev/null | wc -l)
+            # Count subdirectories (using a trailing slash pattern)
+            dir_count=$(ls -d "$dir"/*/ 2>/dev/null | wc -w)
+            echo ".sh file count: $sh_count"
+            echo "Subdirectory count: $dir_count"
+            ;;
+        4)
+            echo "Exiting..."
+            break
+            ;;
+        *)
+            echo "Invalid option. Please try again."
+            ;;
+    esac
+done
+
+echo "Bye!"