Sftp large number of files


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# 1  
IBM Sftp large number of files

Want to sftp large number of files ... approx 150 files will come to server every minute. (AIX box)
Also need make sure file has been sftped successfully...

Please let me know :
1. What is the best / faster way to transfer files?
2. should I use batch option -b so that connectivity will be maid only once for multiple files?
3. How to capture return code of sftp. ? So that script can send alert if there is error in sftp

Please advise.
Thanks.
# 2  
If file transfer had a "go faster" button everyone would be pushing it already...

The return code of sftp arrives in $? like any other command. But this won't tell you which file messed up. I'm not sure all implementations of sftp even return proper error codes. You may need to save sftp's standard error output and process it afterwards.

Might you consider rsync? Unlike sftp, it checks and verifies the remote files.
This User Gave Thanks to Corona688 For This Post:
# 3  
Thanks for the info, how to use rsync on AIX ? Please let me know.

rsync will able to move transferred file to another directory ? how does it work? Please advise.
# 4  
rsync, or 'remote sync', is an extremely common utility for duplicating entire trees of files. It is intelligent enough to avoid recopying up-to-date files while still copying ones that are out-of-date, corrupted, or missing. I've seen it used for managing hundreds of thousands of files in a go.

At its most basic, you give it a source directory and a destination directory, and it updates the contents of the destination to match the source. It has many options to control how it works. The manual page is a long read but useful.

Code:
$ mkdir a b
$ touch a/1 a/2 a/3 a/4
$ rsync a/ b  # Note a/, not a
$ ls b

1 2 3 4

$ rm a/1        # a now only contains 2 3 4
$ rsync -r a/ b # without --delete, does not delete extra files in b
$ ls b

1 2 3 4

$ rsync -r --delete a/ b # This will delete the extra file in b
$ ls b

2 3 4

$

If you run an rsync daemon on the destination, you can use rsync in a manner similar to scp: rsync /path/to/source/ user@host:/path/to/dest ...with the difference that rsync can be told to be recursive with -r, and is smarter than a blind copy.

Last edited by Corona688; 04-25-2013 at 02:46 PM..
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