Yeah, It can be enabled. Script should be validated before executing it.

Hi LucD,

I mean script should check the SSH status before executing it. While executing below script was throwing an error. Could you please help me out to complete this task.

Thank you in Advance!!

$root = "root" 

$Passwd = "supersecret"

$esxlist = "xx.xx.xx.xx"

$cmd = @'

"cp /var/spool/cron/crontabs/root /var/spool/cron/crontabs/root.bak && sed -e '/device\ purge/s/^/#/g' -i /var/spool/cron/crontabs/root"

'@

$plink = "<path to >\plink.exe" #Provide the path of plink

$PlinkOptions = " -v -batch -pw $Passwd"

$remoteCommand = '"' + $cmd + '"'

foreach ($esx in $esxlist) {

Connect-VIServer $esx -User  $root -Password $Passwd

Write-Host -Object "starting ssh services on $esx"

$sshstatus= Get-VMHostService  -VMHost $esx| where {$psitem.key -eq "tsm-ssh"}

if ($sshstatus.Running -eq $False) {

Get-VMHostService | where {$psitem.key -eq "tsm-ssh"} | Start-VMHostService }

Write-Host -Object "Executing Command on $esx"

$output = $plink + " " + $plinkoptions + " " + $root + "@" + $esx + " " + $remoteCommand

}

$message = Invoke-Expression -command $output

$message

Error:

=======

Invoke-Expression : At line:1 char:133

+ ... spool/cron/crontabs/root /var/spool/cron/crontabs/root.bak && sed -e  ...

+                                                                ~~

The token '&&' is not a valid statement separator in this version.

At E:\Plink\configchange.ps1:19 char:12

+ $message = Invoke-Expression -command $output

+            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : ParserError: (:) [Invoke-Expression], ParseExcep

   tion

    + FullyQualifiedErrorId : InvalidEndOfLine,Microsoft.PowerShell.Commands.I

   nvokeExpressionCommand

Hi LucD,

To workaround this error I've used separate variables. Now, it has executed without any error.

$root = "root" 

$Passwd = "XXXX"

$esxlist = "XXXX"

$cmd = @'

"cp /var/spool/cron/crontabs/root /var/spool/cron/crontabs/root.bak "

'@

$cmd1= @'

"sed -e '/device\ purge/s/^/#/g' -i /var/spool/cron/crontabs/root"

'@

$plink = "E:\Plink\plink.exe" #Provide the path of plink

$PlinkOptions = " -v -batch -pw $Passwd"

$remoteCommand = '"' + $cmd + '"'

$remoteCommand1 = '"' + $cmd1 + '"'

foreach ($esx in $esxlist) {

Connect-VIServer $esx -User  $root -Password $Passwd

Write-Host -Object "starting ssh services on $esx"

$sshstatus= Get-VMHostService  -VMHost $esx| where {$psitem.key -eq "tsm-ssh"}

if ($sshstatus.Running -eq $False) {

Get-VMHostService | where {$psitem.key -eq "tsm-ssh"} | Start-VMHostService }

Write-Host -Object "Executing Command on $esx"

$output = $plink + " " + $plinkoptions + " " + $root + "@" + $esx + " " + $remoteCommand

$output1 = $plink + " " + $plinkoptions + " " + $root + "@" + $esx + " " + $remoteCommand1

}

$message = Invoke-Expression -command $output

$message1 = Invoke-Expression -command $output1

$message

$message1

Output:

========

PowerCLI E:\Plink> .\configchange.ps1

Name                           Port  User

----                           ----  ----

10.50.56.55                    443   root

starting ssh services on 10.50.56.55

Executing Command on 10.50.56.55

Connecting to 10.50.56.55 port 22

We claim version: SSH-2.0-PuTTY_Release_0.68

Server version: SSH-2.0-OpenSSH_7.1

Using SSH protocol version 2

Doing ECDH key exchange with curve Curve25519 and hash SHA-256

Host key fingerprint is:

ssh-rsa 2048 ab:8b:fe:7b:3f:67:fd:1d:4d:41:d8:72:86:12:77:dd

Initialised AES-256 SDCTR client->server encryption

Initialised HMAC-SHA-256 client->server MAC algorithm

Initialised AES-256 SDCTR server->client encryption

Initialised HMAC-SHA-256 server->client MAC algorithm

Using username "root".

Attempting keyboard-interactive authentication

Access granted

Opening session as main channel

Opened main channel

Started a shell/command

Server sent command exit status 0

Disconnected: All channels closed

Connecting to 10.50.56.55 port 22

We claim version: SSH-2.0-PuTTY_Release_0.68

Server version: SSH-2.0-OpenSSH_7.1

Using SSH protocol version 2

Doing ECDH key exchange with curve Curve25519 and hash SHA-256

Host key fingerprint is:

ssh-rsa 2048 ab:8b:fe:7b:3f:67:fd:1d:4d:41:d8:72:86:12:77:dd

Initialised AES-256 SDCTR client->server encryption

Initialised HMAC-SHA-256 client->server MAC algorithm

Initialised AES-256 SDCTR server->client encryption

Initialised HMAC-SHA-256 server->client MAC algorithm

Using username "root".

Attempting keyboard-interactive authentication

Access granted

Opening session as main channel

Opened main channel

Started a shell/command

Server sent command exit status 0

Disconnected: All channels closed