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Top Forums UNIX for Advanced & Expert Users How to use SFTP from command line without entering user and password Post 302171283 by Hangman2 on Thursday 28th of February 2008 04:25:27 AM
Old 02-28-2008
How to use SFTP from command line without entering user and password

I would like to use SFTP from command line without entering userid and password.

Here is what I have gathered and did.

1) Create a public and private key pair for the protocol you want to use.

To create a key pair for use by SSH2, enter:

ssh-keygen -t dsa

I did that and got following message

Enter file in which to save the key (/home/user1/.ssh/id_dsa): /home/user1/.ssh/id_dsa
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/user1/.ssh/id_dsa.
Your public key has been saved in /home/user1/.ssh/id_dsa.pub.
The key fingerprint is:
71:f5:3d:8f:ae:2a:73:9c:79:92:b0:35:ca:9a:2f:ed

I did not enter a passphrase

2) Next step I did was copied this file to a remote machine to which I want to connect like this

scp /home/user1/.ssh/id_dsa user2@machine2:/home/user2/.ssh/authorized_keys

Now I logged out from user1@machine1 and user2@machine2

and then just write following lines in a korn shell script:


sftp machine2
put test_file

but it asks for password for user2 on machine2.

So what else am I missing???

Smilie
 

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SSH-COPY-ID(1)						      General Commands Manual						    SSH-COPY-ID(1)

NAME
ssh-copy-id - install your public key in a remote machine's authorized_keys SYNOPSIS
ssh-copy-id [-i [identity_file]] [user@]machine DESCRIPTION
ssh-copy-id is a script that uses ssh to log into a remote machine (presumably using a login password, so password authentication should be enabled, unless you've done some clever use of multiple identities) It also changes the permissions of the remote user's home, ~/.ssh, and ~/.ssh/authorized_keys to remove group writability (which would oth- erwise prevent you from logging in, if the remote sshd has StrictModes set in its configuration). If the -i option is given then the identity file (defaults to ~/.ssh/id_rsa.pub) is used, regardless of whether there are any keys in your ssh-agent. Otherwise, if this: ssh-add -L provides any output, it uses that in preference to the identity file. If the -i option is used, or the ssh-add produced no output, then it uses the contents of the identity file. Once it has one or more fin- gerprints (by whatever means) it uses ssh to append them to ~/.ssh/authorized_keys on the remote machine (creating the file, and directory, if necessary) SEE ALSO
ssh(1), ssh-agent(1), sshd(8) OpenSSH 14 November 1999 SSH-COPY-ID(1)
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