The most efficient way to preserve a file's timestamp in curl is by using the -R flag (short for --remote-time ).
Preserving the "Last Modified" metadata isn't just about record-keeping; it has several practical technical benefits:
Ensure that assets in a development environment match the production server’s timeline. 💡 Advanced Usage Scenarios 1. Combining with Authentication
On some restricted file systems or when using certain containers, curl might not have the necessary permissions to "touch" or modify the file metadata after the download. In these cases, you may need to run the command with appropriate user privileges. 🏁 Summary Checklist Use -R Save with original name: Use -O Handle redirects: Use -L