I am developing a script which uses ssh to connect to a windows host, run a powershell command, and parse the output. While I can connect to the host and run the command, powershell will not exit and return control back to the local script until I press the enter key.
At the moment, the specific command being run is ssh HOSTNAME 'echo $(hostname)' and the ssh server is configured to pass remote execution requests to powershell -noninteractive -command CMD, where HOSTNAME is the name of the windows host and CMD is the remote command to be run (in this case echo $(hostname)).
The end goal is to have the script which is calling remote powershell commands to run completely noninteractively, but this is currently impossible as the powershell command will not run noninteractively.
How do I get powershell to run remote commands noninteractively?
I've resolved the issue. While I haven't determined what was causing the issue, I can at least overcome the issue at hand by redirecting stdin to /dev/null on the side that initiates the ssh connection.
$ ssh HOSTNAME "CMD" </dev/null
This solution doesn't involve powershell at all, but rather treats the symptoms from the other side of the connection.
Related
My OS is Windows 10 (x64) and I installed both Powershell 7 and cygwin.
Then, I installed "sshpass" using cygwin.
And, here are the cases I am experiencing right now.
From cmd, if I enter "C:\cygwin64\bin\mintty.exe -", cygwin pops up with initial directory "~". Then, if I type "sshpass -p<password> ssh <username>#<host>", it perfectly works smoothly!
From cmd, if I enter "C:\cygwin64\bin\mintty.exe", cygwin pops up with directory "/cygdrive/c/Users/myname". Then, if I type "sshpass -p<password> ssh <username>#<host>", it asks me to type the password. This means that sshpass is not working correctly here.
From powershell, if I type "C:\cygwin64\bin\sshpass.exe -p<password> C:\cygwin64\bin\ssh <username>#<host>", nothing happens.
My questions are the following:
How do I properly run sshpass command in Powershell?
Let's say my ip address is 1.1.1.1 and I am connecting to a server whose ip is 2.2.2.2, and both computers OS systems are Windows. When I connect to the server through ssh, it shows the "cmd" terminal of the server. How can I change it to show "cygwin" terminal when I connect to the server?
I am having very hard time fixing this out.. Thank you very much in advance..
I am not sure i am getting this, anyway, if i understand correctly you have a hard time launching sshpass from powershell.
Try using Start-Process commandlet: (maybe add the full path to ssh in arguments (?))
start-process -filepath C:\cygwin64\bin\sshpass.exe -ArgumentList '-p<password> ssh <username>#<host>' -Wait -NoNewWindow
Anyway instead of reaching linux commands to windows and run it from powershell, why don't you check powershell modules?
ssh using powerShell script by passing the password along with the Commnad
Also, Powershell Remoting towards linux is a thing nowadays, and it runs over ssh (not bash afaik)
I have local Windows 10 and remote Ubuntu server.
I want to automate connection to server and write executable script witch connects by ssh to server and open new terminal from another server.
What it's supposed to look like
I double click on bat
And then script
inits ssh connect
writes password
gives the user a terminal with a ready ssh connection.
That is, it mimics the following
Problems
How to wait ssh password request? All commands executes immediately.
(additional) can I write it in .sh script, run script, execute all in "start" terminal (from which I run .sh script) and then pass ssh control to invoked terminal?
It's best if someone writes a ready-made script
Automatically enter SSH password with script
Answers:
Direct answer - use expects. But sshpass is better. Also RSA-key can be used.
Can`t tell anything.
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 trying to connect from a unix server to a windows server via SSH, run a powershell command, and then process the output on the unix server.
The SSH connection and remote execution works without error, and powershell is the login shell presented by the SSH server running on the windows host.
Whenever I try to run a powershell command with command substitution, however, the command substitution is not parsed by powershell but rather is treated as a string literal.
For example, as part of a larger command I want to get the hostname of the windows server. Given a windows host at HOSTNAME, when SSH'd into an interactive powershell session, I can run
$ echo "$(hostname)"
HOSTNAME
But when running from the unix server
$ ssh HOSTNAME "echo \"\$(hostname)\""
"$(hostname)"
From my reading, I am inclined to believe that this is due to either a quoting error, which seems unlikely as powershell isn't complaining about syntax, or to powershell operating in a different state than it does when run interactively. The latter seems unlikely as well, but I'm coming from unix/bash to windows/powershell so the general control flow may very well be different than I am accustomed to.
Thus, my question is how do I get powershell to perform command substitution on remotely executed commands?
I have a perl script where I need to connect to another machine using ssh and there run another perl script. I tried using this line:
system("ssh $admin_server 'perl /Perl/scripts/capture_server_restarts_gse.pl $month $date'");
But everytime the script gets to that line, I get the prompt for the remote machine and the script doesn't run.
How can I fix this so the script runs automatically on the other machine without showing the prompt.
Note: I don't need the password and user to connect to the remote machine we already solved that.
Why not copy your public key onto the other machine ? That way you'll be pre-authorised.
Here are the instructions on how to do this using ssh-keygen
Otherwise you have to feed ssh with your password, and that's tricky since ssh normally takes input from a tty and you have to configure your script with the password.
The SSH server may be configured to run always some custom shell instead of the command passed from the client.
Try just running some simple command from the command line, i.e.:
ssh server ls
A less likely possibility is that the perl variables interpolated into the system argument could contain some shell metacharacters requiring better escaping. For instance, a semicolon inside $admin_server.
I am trying to create a word document on a remote windows machine. What I am trying is to telnet to the remote windows machine and run a perl script that creates word document through Win32::OLE. But it doesn't seem to work. Is this possible? Because my script has {visible} set to 1 but will that telnet session have access to instances of word application? Atleast I tried it didn't work.
Telnet may not be the best tool to accomplish this, I'm not sure what kind of permissions it has. I recommend using PsExec, which allows remote command execution on windows servers. If it works locally, it will work using PsExec.
For example:
PsExec.exe \\remotecomputer -u userName -p Password Perl C:\path\to\file\file.pl
You can use the -s flag to run as system account, and the -i flag to run it interactively on the desktop. Without the -i flag, it will run in the console session.