Try to fix an issue where xclip is not being found even though it is installed.

src/fenrirscreenreader/commands/commands/export_clipboard_to_x.py

@@ -29,9 +29,29 @@ class command():
             clipboard = self.env['runtime']['memoryManager'].getIndexListElement('clipboardHistory')
             user = self.env['general']['currUser']
         
+            # First try to find xclip in common locations
+            xclip_paths = [
+                '/usr/bin/xclip',
+                '/bin/xclip',
+                '/usr/local/bin/xclip'
+            ]
+        
+            xclip_path = None
+            for path in xclip_paths:
+                if os.path.isfile(path) and os.access(path, os.X_OK):
+                    xclip_path = path
+                    break
+                
+            if not xclip_path:
+                self.env['runtime']['outputManager'].presentText(
+                    'xclip not found in common locations', 
+                    interrupt=True
+                )
+                return
+                                                                                                                                                    
             for display in range(10):
                 p = Popen(
-                    ['su', user, '-c', f"xclip -d :{display} -selection clipboard"],
+                    ['su', user, '-p', '-c', f"{xclip_path} -d :{display} -selection clipboard"],
                     stdin=PIPE, stdout=PIPE, stderr=PIPE, preexec_fn=os.setpgrp
                 )
                 stdout, stderr = p.communicate(input=clipboard.encode('utf-8'))
@@ -52,5 +72,6 @@ class command():
         except Exception as e:
             self.env['runtime']['outputManager'].presentText(str(e), soundIcon='', interrupt=False)
 
+                                                                                                                                                                
     def setCallback(self, callback):
         pass