cURL -R option has no effect when downloading from google drive

magische_vogel · 09-30-2015, 02:38 AM

I'm facing an issue when using the cURL R option.

Here is my cURL command:

Code:

curl -s -L -k -O -J -R "https://drive.google.com/uc?export=download&id=0B6LXSM_BRU4TbEE2ajlUOThXYlU"

The download process complete successfully but the file is created with the current datetime, i'm wondering why the -R option is not setting the remote file's time on the local file.

Trying with my webserver cURL -R option work correctly.I guess the problem occur only when google drive is used.

any help is appreciated

best regards.

magiche

pan64 · 09-30-2015, 02:43 AM

At first google created that file for you, that's why you got the current date and time. If you try it a bit later you will see the time will not change any more.

magische_vogel · 09-30-2015, 02:54 AM

Quote:

Originally Posted by pan64

At first google created that file for you, that's why you got the current date and time. If you try it a bit later you will see the time will not change any more.

Unfortunately each new downlaod operation append the cusrrent datetimestamp to the downloaded file. You can check that by your self by using the supplied link.By the way before commenting your answer i tried the link and i got the file in my embedded linux with the current timestamp.

Code:

root@dm800:~# curl -s -L -k -O -J -R "https://drive.google.com/uc?export=download&id=0B6LXSM_BRU4TbEE2ajlUOThXYlU"
root@dm800:~# ls -la e2*
-rw-r--r--    1 root     root       102748 Sep 30 09:47 e2-LISTE-DREAMBOX800HD-26.09.2015.tar.gz

best regards

pan64 · 09-30-2015, 03:00 AM

so that means it was always generated again and again.

magische_vogel · 09-30-2015, 03:17 AM

Quote:

Originally Posted by pan64

so that means it was always generated again and again.

I think yes.
As i'm planning to use the curl -z switch (time condition) to check the newer version of my files on google drive before each download request it is impossible to achieve this goal with such behavior of google drive.
As an alternative may be generating and gziping an md5 hash for each file will solve the probleme. What do you think about that ?

thanx

pan64 · 09-30-2015, 03:27 AM

yes, md5sum may help