diff --git a/url_extractor.py b/url_extractor.py
index c2b0a2d..0fe2dfb 100644
--- a/url_extractor.py
+++ b/url_extractor.py
@@ -10,11 +10,14 @@ def process_file(file, directory_path, output_file_path, keyword, counter_lock,
 
     # Run the command and append the output to the same output file
     command = f"zcat {file_path} | grep '{keyword}'"
-    result = subprocess.run(command, shell=True, stdout=subprocess.PIPE, text=True)
+    process = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, text=True)
 
-    # Append the output to the same output file
+    # Stream the output line by line and append to the output file
     with open(output_file_path, "a") as output_file:
-        output_file.write(result.stdout)
+        for line in process.stdout:
+            output_file.write(line)
+
+    process.wait()  # Wait for the process to finish
 
     # Update the processed files count
     with counter_lock:
@@ -68,4 +71,4 @@ with ThreadPoolExecutor(max_workers=num_concurrent_instances) as executor:
     for future in futures:
         future.result()
 
-print(f"\nAll files processed. URLs appended to {output_file_path}")
+print(f"\nAll files processed. URLs appended to {output_file_path}")
\ No newline at end of file