diff --git a/aider/utils.py b/aider/utils.py
index fa71b6b9f..169dddb38 100644
--- a/aider/utils.py
+++ b/aider/utils.py
@@ -29,8 +29,15 @@ def run_interactive_command(command):
         return b
 
     try:
-        # Spawn the command
-        child = pexpect.spawn(command, encoding="utf-8")
+        # Check if /bin/sh exists
+        if os.path.exists('/bin/sh'):
+            # Use /bin/sh -c if it exists
+            spawn_command = ['/bin/sh', '-c', command]
+            child = pexpect.spawn('/bin/sh', args=['-c', command], encoding="utf-8")
+        else:
+            # Fall back to the original behavior
+            spawn_command = command
+            child = pexpect.spawn(command, encoding="utf-8")
 
         # Transfer control to the user, capturing output
         child.interact(output_filter=output_callback)