is sftp supports overwrites files. i need to overwrites the files if already present

Rajiv13s · 06-25-2018, 04:57 AM

Hello ALL.

In my current project there is sftp methods used to download the files from remote server. currently we are deleting all the files and download the fresh files.

Now client want old source as it in case sftp unable to down load files due to some error and its continue with old source files in case sftp failed.

Please let me know if any one aware the solution of this issue.

Regards,
Rajiv

wpeckham · 06-25-2018, 05:09 AM

#1 sftp download should overwrite just fine if the file ownership and permissions allow.

#2 you might want to investigate using rsync instead. If your download is from a single folder or tree it can handle file changes very efficiently.

Rajiv13s · 07-04-2018, 04:53 AM

Quote:

Originally Posted by wpeckham

#1 sftp download should overwrite just fine if the file ownership and permissions allow.

#2 you might want to investigate using rsync instead. If your download is from a single folder or tree it can handle file changes very efficiently.

Thanks for replying.

You mean permission of old files? in case if no permission then can we change the permission.

wpeckham · 07-04-2018, 05:42 AM

Quote:

Originally Posted by Rajiv13s

Thanks for replying.

You mean permission of old files? in case if no permission then can we change the permission.

I mean that if the folder permissions on the target folder, or the file permissions on the EXISTING target file, restrict writes then you will not be able to overlay the file. IF they allow, then sftp will do the job.
However
rsync can EDIT the file in place (optionally deleting obsolete files) to bring the source and target into agreement. This can be MUCH faster than overwriting files, since only the DIFFERENCES need to be transferred. Just something you might want to consider.