Rename file based on last mod datetime?

[BPetro]

Has anyone done this? I know how to rename a file using today's datetime. But how about if I want to use the files last modified date/time, represent that as a nice file-name string like maybe 071003-1412 (that's flexible, but keep it nice for a file name) and then rename the file based on that. Any ideas? Is there a command to return that for a specific filename or would you have to cut some form of ls output to snag it? If the latter anyone have a "best" form?

THANKS!

 

[feherke]

Hi

[blue]master #[/blue] ls -ls
total 12
   4 -rw-r--r--    1 master  master      172 2007-07-06 16:10 File1
   4 -rw-r--r--    1 master  master       85 2006-10-29 12:39 file1.txt
   4 -rw-r--r--    1 master  master      799 2006-09-13 17:31 first

[blue]master #[/blue] find . -type f -printf 'mv "%P" "%P-%Ty%Tm%Td-%TH%TM"\n' | sh

[blue]master #[/blue] ls -ls
total 12
   4 -rw-r--r--    1 master  master      172 2007-07-06 16:10 File1-070706-1610
   4 -rw-r--r--    1 master  master       85 2006-10-29 12:39 file1.txt-061029-1239
   4 -rw-r--r--    1 master  master      799 2006-09-13 17:31 first-060913-1731

Tested with GNU [tt]find[/tt].

Feherke.

http://rootshell.be/~feherke/

 

[BPetro]

Excellent - that's better than I had hoped. I was afraid it would require some cut magic which would be a fairly ugly hack. Thanks a bunch.

Hmm... to take it a step further, here's the perfect final solution for what I needed if anyone else wants:

[tt]find . -type f -iname "*.log" -printf 'mv "%P" "%P-%Ty%Tm%Td-%TH%TM"\n' | sh [/tt]

This is what feherke suggested plus elimination of all files that do not match a "*.log" name skeleton.

 

[Chapter11]

If you rename a file, doesn't the mod time become the time you renamed it?

 

[PHV]

If you rename a file, doesn't the mod time become the time you renamed it?
No.