how to ssh on a box without manually giving password at runtime

[Sangal-Arun]

Hi all,

I want to ssh a box say:

$ ssh -l a12345 boxname

but, it is asking me to enter a password. I don't want to enter the password at runtime...means it should take the password automatically if somehow we provide it at the command prompt.... I thought using:

$ echo "mypassword"|ssh -l a12345 boxname

but still ssh command is asking me to enter the password though i have provided it at the command prompt using echo command.

Is there any way to achieve this.
Thanks-

[unchiujar]

You can use a key file instead of a password. From the man pages:

-i identity_file
             Selects a file from which the identity (private key) for RSA or DSA
             authentication is read.  The default is ~/.ssh/identity for protocol
             version 1, and ~/.ssh/id_rsa and ~/.ssh/id_dsa for protocol version
             2.  Identity files may also be specified on a per-host basis in the
             configuration file.  It is possible to have multiple -i options (and
             multiple identities specified in configuration files).

You will need ssh server that is set up to accept authentication through key pairs

[Sangal-Arun]

Using ssh-keygen...and creating all necessary files and running the ssh-agent, Im able to run any command on target box/host without entering the password at command prompt or specifying it at the command prompt.

But,
NOTE: It would be appreciated if we don't go for creating the .pub and authorized_keys files on target host. Means, I just want to give the password at command prompt while calling ssh -l ..userid.. boxname... and that too in encrypted form...not visible to any other user if he runs history command and later do some crazy things using my userid/password.
"gpg" command can be used for this...but i have never used it before.


Thanks-

[unchiujar]

A possible solution

[aliosa27]

ssh [Remote address] "echo $(cat /root/.ssh/id_dsa.pub) >/root/.ssh/authorized_keys"

It will ask for your password like normal...after you put it in, try sshing in..you should not need a password again..