automate sftp using unix script - Page 2

csaunders · #1 (**permalink**) 06-15-2005

Quote:

Originally Posted by dangral

I think you have two issues here:

1) Achieving passwordless authentication
2) automating sftp

I will try to discuss one at a time. Forgetting about sftp for a second, in order to achieve passwordless authentication ( in your terms non-interactive authentication) you need to set up a key that does not have a password. See this link for tips on how to set that up.

However, please see this warning and tips on how to set it up to be secure. (Sorry for all the links)

Once you have verified passwordless authetication is working, you can now attempt to automate sftp. What the link in my previous post said is:

You would not be putting a password file after sftp -b, you would be putting your standard-in device or a file with all the ftp commands. So on solaris, your script might look like this:

Code:

  
  #!/bin/sh
  echo "OK, starting now..."
  sftp -b /dev/fd/0 remotehost <<EOF
  cd pub
  ascii
  get filename.txt
  bye
  EOF

the link you have given does not work, tried the steps on solaris 9 and it still asks for password....

Phantom_Phixer · #2 (**permalink**) 12-12-2005

I am looking for a script that will allow me to automate file transfer via 'sftp'. key-gen is not an option as the 'client' (where we are 'getting' the files from) will mot permit us to generate the public/provate' keys for scp.
I have tried a number of examples shown and none of them work with sftp Each one either balks at the password or prompts for the password. Can someone show me a way to do this? Thanks.

STiVo · #3 (**permalink**) 06-15-2005

Well if you can get the user keys working that will make things much easier.

Also, why don't you just use scp instead? Or maybe curl?

Something like this...

Code:

#!/bin/sh

scp remoteuser@remotehost:/path/to/file.txt /path/to/local/target

With the user keys setup you wouldn't have to interact with it at all- but remember it's a lot harder to get a password from my head than from my .ssh folder...

cyg · #4 (**permalink**) 07-29-2005

using expect can get around the password verification issue.

Code:

/usr/local/bin/expect <<EOF
spawn  /usr/local/bin/sftp user@remotehost
expect "password:"
send "cd pub \r"
expect "sftp> "
send "ascii \r"
expect "sftp> "
send "get filename.txt \r"
expect "sftp> "
send "bye \r"
EOF

LindaM · #5 (**permalink**) 01-25-2006

Quote:

Originally Posted by priyamurthy2005

Hi All,
I need to write a UNIX script that automates the sftp process. I should be able to do a sftp to a secure box and get a file from there. I am having a problem doing this because no matter what I do, when I run my script, I get a prompt at command line asking for a password. How could I automate this? Could someone give me a sample script?
Thanks in advance.
Priya

DID YOU EVER GET THIS TO WORK??

Vikas Sood · #6 (**permalink**) 05-08-2006

All,

This is a great forum for beginners like me. I have been following this thread in its multiple forms on various websites. I got a good start by following this thread but got stuck after doing exactly what has been mentioned in this thread word by word. The pain area : it was still prompting me for a password everytime.

Then, somebody suggested to recreate $HOME/.ssh directory again from scratch. Guess what, i did that and now i am able to log on from one server to another without being prompted for a password.

I dont know how much this information is gonna be useful to ppl but sure proved the definite solution for me and i thought i probably should share it with everybody.

Regards
Vikas.

unxuser · #7 (**permalink**) 07-28-2006

Hi Vikas,

Would you please give us more details what mothed you used get around? Thanks.

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