Hello, 
I have a PowerShell script. I am using SFTP. 
    $sessionOptions = New-Object WinSCP.SessionOptions -Property @{
    Protocol = [WinSCP.Protocol]::Sftp
    HostName = $hostname
    UserName = $config.Configuration.UserName
    SecurePassword = ConvertTo-SecureString $config.Configuration.Password 
} 
The 
default shell in the target host is 
ksh. I want to execute a command:
    $Command = "ls -ltr"
$output = $session.ExecuteCommand($Command)
 
I get this error:
    Your shell is probably incompatible with the application (BASH is recommended)    
If I execute this command against a host where the default shell is 
/bin/bash, 
it works. 
Question is: How can I direct SFTP to use 
ksh as the shell for the command execution?
Note: 
I cannot change the default host from 
ksh to 
bash because it is a company policy and I have hundreds of hosts. 
-rawsettings option 
shell, the documentation states is only for SCP protocol 
https://winscp.net/eng/docs/rawsettings
Shell (SCP protocol)
In this post (
Connection has been unexpectedly closed. Server sent command), someone suggested he/she can change the shell:
    Oh, you know, looking through the options I changed the shell to /bin/ksh and it worked.    
but does not explain how. 
Regards, Raul.