[Bug-wget] downloading a file from a web - which is updated every 24 hours

[Mingfeng Lin]

Greetings! 

I'm new to -wget- and haven't found the answer in the help file.  I want to download a file from an URL, and this file is updated every 24 hours on the server.  What I would like to do is to add a -wget- bat file in the startup menu of windows, and then, every time I start the computer the -wget- should (1) check with the file on the server and see if a copy has been downloaded; if not, download the file and keep it. 

The problem I have is that if I use a -timestamping- option, the file will be always replaced/updated with the most recent one.  If I do not use this option, then all versions will be saved - however if I startup my computer more than once a day, there will be multiple copies of the same file.  So I was curious if I missed any options in -wget- that can help me with this? 

Thank you very much for your help!

Mingfeng