non-interactive transfer of a file using SFTP

[Gangadhar_1]

Hi all,
Please help me in transfering a file using SFTP non-interactively. I am already using expect script for that but its not working when i keep it in crontab file. (refere my previous thread)

I also tried keeping the keys in destination machine, but coudln't get the ultimate result.

Thanks in advance.

[KapilRaj]

I never tried ssh-keygen with sftp. But an scp works so you may use it.

[Gangadhar_1]

@Kapil Raj
Thanks for your reply Kapil Raj.

Actually i have tried it already, but then also its giving the error, "No principal in keytab matches desired name", and it is again asking for the password.

If you could brief me the exact procedure to authenticate using this ssh-keygen, it'll be very helpfull for me. (coz i think i'm goin wrong somewhere here only..)

Thanks a lot.

[Peter Nikitka · Accepted solution]

Hi,

the exact procedure is found in ther man pages of ssh and ssh-keygen.

Short:
For user_from@host_from:
1) ssh-keygen -t rsa
2) cd ~/.ssh

For 3+4 you need the password:
3) scp id_rsa.pub user_to@host_to:ssh/key-user_from
4) ssh user_to@host_to

Now you are user_to at host_to.
Create keys as well, if not already existing here, because in short or long terms you will need them :-) .
5) ssh-keygen -t rsa
5) cd .ssh
6) cat key-user_from >>authorized_keys
7) chmod 600 authorized_keys
8) exit

Now you are user_from at host_from again.
This should work without the request of a password:
9) ssh user_to@host_to date


There may be many things, which cause the failure of this setup. For details read the man pages, for tracing use
ssh -vvv user_to@host_to date


mfG Peter

[Peter Nikitka]

Hi,

did you make progress in your efforts? It is good practise in this forum to post results of the suggestions.

mfG Peter

[Gangadhar_1]

@Peter

sorry peter, these two days were weekends, so coudln't reply..

and i tried using that procedure, but still its asking for password.. but somehow one of my colleague did it.. and its working only for his login, he also is unable to set it up to other login.. i donno whats goin wrong but anyways, i got to know about many things by this discussions..

thanks to one and all, involved in this discussion..

Kind regards,
Gangadhar