January 1, 2012 at 12:00 am #5837
by Davehal at 2013-04-23 04:18:28
I'm very new to PowerShell and this is a kind of specialised question, so if I'm asking in the wrong place, please let me know.
I'm writing a PowerShell script which sends commands to a remote virtual machine which is running linux.
I am using plink which is just a ssh client to connect to the vm, this connects no problem and I can run simple commands no problem. My issue appears when I try to send commands that run an application on the vm called GDB. This is the Gnome Debugger.
I dont think my problem is related to plink, gdb or linux, I think it is how I am executing the PowerShell command.
My problem is that when I run the command to execute the debugger "./rungdb", it runs fine, but my PowerShell script never completes, it just sits there after the Invoke-Expression command and never moves on.
The code is below, can anyone tell me how to get it to complete the Invoke-Expression statement and move on?
Thank you, and sorry if this doesn't make sense!
write-host "Host login attempt..`n";
$HostAddress = '10.10.10.10';
if($HostAddress -notlike "")
$myExpression = "& " + $plink + " -pw password -ssh root@" + $HostAddress + " ./rungdb";
by DexterPOSH at 2013-04-23 06:47:53
[quote="Davehal"]Â $myExpression = "& " + $plink + " -pw password -ssh root@" + $HostAddress + " ./rungdb";[/quote]
I think the problem is with the expression you are building "&" is a call operator in PowerShell, it essentially does what Invoke-Expression is doing for you here.
Try removing the "&" and then run the script from the above line. I am also doubtful about how you are building the expression.
Try this link to see better ways to call executables in Windows PowerShell http://social.technet.microsoft.com/wiki/contents/articles/7703.powershell-running-executables.aspx
Hope this helps
by happysysadm at 2013-04-23 07:09:47
Dexter is right, you are misusing '&'.
First I suggest you store your parameters to the linux VM in a putty names session, so you don't have to leave your password in clear in your script.
Then run something like this:
[code2=powershell]$command = & .\plink.exe hostname -load sessionname "whatever command"[/code2]
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