import re with open("src-tauri/src/lib.rs", "r") as f: content = f.read() content = content.replace('let text = String::from_utf8_lossy(&output.stdout).to_string();\n Ok(text)', 'let text = String::from_utf8_lossy(&output.stdout).to_string();\n std::fs::write("/tmp/firelink_out.txt", &text).unwrap();\n Ok(text)') content = content.replace('let err = String::from_utf8_lossy(&output.stderr);\n Err(format!("yt-dlp error: {}", err))', 'let err = String::from_utf8_lossy(&output.stderr);\n std::fs::write("/tmp/firelink_err.txt", &err).unwrap();\n Err(format!("yt-dlp error: {}", err))') with open("src-tauri/src/lib.rs", "w") as f: f.write(content)