How do I get current date/time on the Windows command line in a suitable format for usage in a file/folder name?

Question

Update: Now that it\'s 2016 I\'d use PowerShell for this unless there\'s a really compelling backwards-compatible reason for it, particularly because of the regional setting

Answer 1

"d:\Program Files\7-Zip\7z.exe" a -r code_%date:~10,4%-%date:~4,2%-%date:~7,2%.zip