add 'current' alias

showing installed state

install.py

@@ -183,7 +183,7 @@ def write_when_new(filename, content, ignore_reduction=False):
         print('>>>')
         print('\n'.join(old[-bottom_lines:-1]))
         print("===")
-    return True
+    return content
 
 
 def create_if(name, cfg, mac, dhcp_server_cfg):
@@ -447,7 +447,13 @@ def handle_config():
             if action == 'restart':
                 unix_cmd('systemctl restart %s' % service)
             unix_cmd('systemctl enable %s' % service)
-    return True
+    result = [f'config file:\n  {cfgfile}']
+    for section in parser.sections():
+        result.append(section)
+        for key, value in parser.items(section):
+            result.append(f'  {key} = {value}')
+    result.append('')
+    return '\n'.join(result)
 
 
 doit = False
@@ -465,5 +471,7 @@ elif show.dirty and more_info == 'NONE':
     if answer.lower().startswith('y'):
         handle_config()
         walk(Do())
+        with open('/root/aputools/current', 'w') as f:
+            f.write(result)
 else:
     print('nothing to do')