I am trying to SSH to a remote Windows machine (an AWS ec2 instance) by using an username and password of the remote machine. I need to automate this connection to run some remote commands from my script (either shell or Power shell) without prompting me for a password, My script shouldn't fail by expecting a password to be prompted
I don't want to use sshpass or any generated keys (by using ssh-keygen). Since the source machine where I run this command/script is not a dedicated machine, I may run it on a different machine everytime. I also gave a try to connect using the .PEM file provided by AWS as below (thought it could be easy while using it the script).
$ssh -i aws_keypair.pem Administrator#10.10.10.10
Administrator#10.10.10.10's password:
It is still expecting me for a password even if I used the .PEM file, I also tried to created an file 'authorized_keys' in the remote Windows machine under the path "C:\Users\Administrator.ssh\". Still it is prompting me for a password.
Expectation :
Connect to remote Windows machine using PEM file and run some remote commands.
(or)
It shouldn't prompt me for a password while I try for the connection from some script (shell/power shell).
Can be done without any 3rd party tools like this:
$env:TMPPW=Get-Content -Path 'secure_file.txt' ; $un='MyUserName'
$j=Start-Job -ScriptBlock{Start-Sleep -Seconds 1
(New-Object -ComObject wscript.shell).SendKeys("$env:TMPPW{ENTER}")}
& ssh.exe -q -4 -l $un 127.0.0.1 'whoami'
$env:TMPPW=([guid]::NewGuid()).Guid ; $env:TMPPW=$null
I am able to achieve this using Plink command (Installation of Putty is required on source machine to execute this command). So now, I am able to successfully pass the username and password with in the script (Shell script) and everything is working as expected.
FYI, I am pasting the exact command which worked for me
$echo y | plink -ssh Administrator#10.10.10.10 -pw abc123 "dir"
Related
What I am trying to do is to login to remote Linux server using SSH from my Windows machine by running a shell script via git bash.
I would like to write a script which will be used by an user with basic IT knowledge. This script will execute a bunch of commands on the remote machine, so it does need to establish a SSH connection.
What I have tried to write in this script so far is:
ssh username#ip <password>
EDIT: You should consider installing Jenkins on the remote system.
Running a command on a remote system can be done via:
ssh user#host command arg1 arg2
If you omit the password, a password prompt will appear, to get around the password prompt, you should consider setting passwordless SSH login. https://askubuntu.com/questions/46930/how-can-i-set-up-password-less-ssh-login
Rephrasing what you said, you want to write a script (namely script1.sh) which does the following (in this order):
Start a ssh connection with a remote
Execute some commands, possibly written in another script (namely script2.sh)
Close the connection / Keep it open for additional command line commands
If you want to put the remote commands on script2.sh instead of listing them in script1.sh, you need to consider that script2.sh must be on the remote server. If not, then you may consider to delegate to script1.sh the creation/copy of script2.sh on the remote machine. You may copy it in a temporary folder.
In this case, my suggestion is to write script1.sh as follows:
Copy of script2.sh with
scp /path/to/local/script2.sh user#host:/path/to/remote/script2.sh
Switch bash sheel to remote shell with
ssh user#host
Execution of script2.sh
sh /path/to/remote/script2.sh
Instead, if you prefer to list everything in just one script file, you may want to write:
Switch bash sheel to remote shell with
ssh user#host
Execution of commands
echo "This command has been executed on the remote server"
echo "This command has also been executed on the remote server"
..
Possibly closing the SSH connection to prevent that the user execute additional commands
You may consider to copy the ssh-keys on the remote server so to avoid password prompts. More information here.
I have a Windows Client machine and I would like to invoke a powershell script on that client from my local machine i.e. Mac.
I have ssh on Windows via freesshd.
Also, i need to provide password via script hence I ended up using sshpass.
From my Mac Terminal, while the command:
sshpass -v -p xxx ssh administrator#x.x.x.x "powershell.exe dir"
runs perfectly and returns the content of whatever directory the shell lands in, i am unable the get the same result from inside a shell script.
The simple script is as below:
cmd='sshpass -v -p xxx ssh administrator#x.x.x.x "powershell.exe dir"'
echo `$cmd`
What I get is:
Unable to execute command or shell on remote system: Failed to Execute
process.
I have tried various permutations of " and ' to get the correct command string but to no avail.
What is wrong here?
I have an interesting dilemma with PuTTY PSFTP.
Set up...
Pageant .60
putty .60
Used command:
D:\psftp.exe -load myserver.domain.us.com -l User1 -b MyCommand Script
This loads PuTTY PSFTP, logs in using the user ID with the help of Pageant and then sends a file using commands in the script.
This works great while logged in as an Admin on the server.
It fails while logged in as a regular user on the server:
"psftp: no hostname specified;"blah blah blah.
Including -v reveals no further messages.
What possible delta could there be with permissions or other settings between a server Admin and regular user when it comes to PuTTY?
You load PuTTY stored site myserver.domain.us.com.
That is stored in Windows registry of the local account.
If you run the script using a different account, it won't see the site definition.
You have to define the session completely on command line. What you probably even attempted.
Remove the -load;
Add -ssh to make it clear you want to use SSH (but it's default anyway)
Add -hostkey=... with a fingerprint of the SSH host key (you need the latest version of PuTTY for the -hostkey switch, but you need to upgrade anyway, the version 0.60 is not secure).
D:\psftp.exe -ssh myserver.domain.us.com -hostkey=... -l User1 -b MyCommand Script
I am writing a shell script that can connect to another remote machine and query the DB , write the result in a file and copy the file back to main machine.
I am facing issue while connecting to DB.
I am not understanding how to connect to the remote machine.
I am using ssh root#DB_IP the then ORACLE query. But its always asking a password.
How to provide both username and password while doing a ssh to the remote machine?
You can do this by two ways:-
By adding your id.rsa.pub in your remote machine (~/.ssh/authorized_keys)
sshpass -p password ssh root#ip "sh run.sh "
How to write a bash script using sftp command to download files?
I can use the following command to login to the remote machine, however I need to type in the password manually.
bash-3.2$ sftp -o "Port 22022" mike#s-edm-ssh.local.files.stack.com
mike#s-edm-ssh.local.files.stack.com's password:
Connected to s-edm-ssh.local.files.stack.com.
sftp>
How to do the sftp without the password prompt?
If I like to download aaa.txt file at /remote/mike/files to my local directory /local/mike/downloaded, how to build a script to do all of these work?
Since sftp runs over SSH, you can place your public key on the remote server.
If for some reason you can't place your key on the server, then you can write an Expect script to send your password when the prompt appears. See this example.