You can log or execute commands as another user using ssh:
To bypass password, generate a key par for the guest account:
And append the contents of ~/.ssh/id_dsa.pub in the guest account to the file ~/.ssh/authorized_keys in the host account in the remote server.
For troubleshooting look at /var/log/secure with a privileged user.
Editing "/etc/sudoers" as below is a security risk, as "username" can impersonate anyone, even root.
Last edited by zxmaus; 12-11-2011 at 11:55 PM..
Reason: added tags
Hi,
Can anybody tell me a way to do ssh , without prompting for password from keyboard, Using RSA. The requirement is I need to create the key , using passphrase also.....
Is there any way to do it in UNIX ?
I am doing it from AIX machine , but remote machine is Linux
I tried... (8 Replies)
I have the problem with SFTP; BELOW IS the entry from my ssh_config file
It's prompting me for password all the time when using SFTP. pLEASE help. (1 Reply)
I am trying to copy a file from remote machine using scp. I followed the steps to configure public/private key usage. But still prompting for password when I do ssh.
I did the following steps to configure scp without asking password
Step 1 : local host > ssh-keygen -t rsa and when prompted... (9 Replies)
Hi,
I have SVN installed in my UNIX solaris server.
I actually automated the process that downloads code from SVN server to UNIX solaris server in script. When i run the script, its asking for password to download every element.
Its really difficult to type password for every element when... (3 Replies)
Hi,
When i am trying to connect to other server using ssh coomand, it is prompting for password.
But i want to hardcode it with username so that it should not prompt for password.
And i dont want to use "ssh-keygen" method as it is not allowed.
Please help me.
Regards,
Mukta (7 Replies)
Hi All,
I am trying to transfer a file from one server to a remote server using SFTP. Client is not ready for key setup.
I am working on Solaris 10.
Here is the code.
#!/bin/ksh
# sample automatic Sftp script to dump a file
USER="user1"
PASSWORD="pass1"
HOST="host1"
sftp $USER@$HOST... (6 Replies)
Hi,
I am trying to automate the process of fetching files from remote server to local server through sftp. I have the username and password for the remote solaris server. But I need to give password manually everytime i run the script.
Can anyone help me in automating the script such that it... (3 Replies)
Dear unix experts,
i have a requirement as below.
i need to use SFTP as FTP.
ftp -n -v << ENDFTP
open test_ftp.server
user ftp_user_name ftp_password
quit
ENDFTP
if i use this in a shell script, it's not asking for password. But i want the similar thing achived using... (5 Replies)
Hi,
Can anyone tell me how to pass password in a shell script for sftp so that i can run it in background without user entering the password?
I used a expect script but it timesout after some time and the process remains incomplete at the end.
Can anyone suggest any other idea?
Will the... (3 Replies)
// Red Hat Enterprise Linux Server release 6.7
I wanted to pass the password, but when I execute this cron, it stops at Password: prompt.
Please advise on how to fix the error. Thank you for tour help in advance.
#!/usr/bin/ksh
su - pmserver
echo "su - pmserver"
cd... (2 Replies)
Discussion started by: Daniel Gate
2 Replies
LEARN ABOUT REDHAT
passmass
PASSMASS(1) General Commands Manual PASSMASS(1)NAME
passmass - change password on multiple machines
SYNOPSIS
passmass [ host1 host2 host3 ... ]
INTRODUCTION
Passmass changes a password on multiple machines. If you have accounts on several machines that do not share password databases, Passmass
can help you keep them all in sync. This, in turn, will make it easier to change them more frequently.
When Passmass runs, it asks you for the old and new passwords. (If you are changing root passwords and have equivalencing, the old pass-
word is not used and may be omitted.)
Passmass understands the "usual" conventions. Additional arguments may be used for tuning. They affect all hosts which follow until
another argument overrides it. For example, if you are known as "libes" on host1 and host2, but "don" on host3, you would say:
passmass host1 host2 -user don host3
Arguments are:
-user
User whose password will be changed. By default, the current user is used.
-rlogin
Use rlogin to access host. (default)
-slogin
Use slogin to access host.
-telnet
Use telnet to access host.
-program
Next argument is a program to run to set the password. Default is "passwd". Other common choices are "yppasswd" and "set
passwd" (e.g., VMS hosts). A program name such as "password fred" can be used to create entries for new accounts (when run as
root).
-prompt
Next argument is a prompt suffix pattern. This allows the script to know when the shell is prompting. The default is "# " for
root and "% " for non-root accounts.
-timeout
Next argument is the number of seconds to wait for responses. Default is 30 but some systems can be much slower logging in.
-su
Next argument is 1 or 0. If 1, you are additionally prompted for a root password which is used to su after logging in. root's
password is changed rather than the user's. This is useful for hosts which do not allow root to log in.
HOW TO USE
The best way to run Passmass is to put the command in a one-line shell script or alias. Whenever you get a new account on a new machine,
add the appropriate arguments to the command. Then run it whenever you want to change your passwords on all the hosts.
CAVEATS
Using the same password on multiple hosts carries risks. In particular, if the password can be stolen, then all of your accounts are at
risk. Thus, you should not use Passmass in situations where your password is visible, such as across a network which hackers are known to
eavesdrop.
On the other hand, if you have enough accounts with different passwords, you may end up writing them down somewhere - and that can be a
security problem. Funny story: my college roommate had an 11"x13" piece of paper on which he had listed accounts and passwords all across
the Internet. This was several years worth of careful work and he carried it with him everywhere he went. Well one day, he forgot to
remove it from his jeans, and we found a perfectly blank sheet of paper when we took out the wash the following day!
SEE ALSO
"Exploring Expect: A Tcl-Based Toolkit for Automating Interactive Programs" by Don Libes, O'Reilly and Associates, January 1995.
AUTHOR
Don Libes, National Institute of Standards and Technology
7 October 1993 PASSMASS(1)