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1. #POWERSHELL SSH SHELL STREAM MULTIPLE COMMANDS SEQUENTIALLY INSTALL#
2. #POWERSHELL SSH SHELL STREAM MULTIPLE COMMANDS SEQUENTIALLY CODE#

#POWERSHELL SSH SHELL STREAM MULTIPLE COMMANDS SEQUENTIALLY CODE#

I have tested the code provided in this solution for both PowerShell 5 and 7 and it should be fully portable, at least on Windows. Note in the examples above that "Here" is not printed since fakeCommand fails as it is not a real command. I have had trouble finding precise documentation for this behavior, but this variable seems to be dynamically scoped so you can override it in a block temporarily if you don't want to set it globally. You can set this variable $ErrorActionPreference="Stop" in order to emulate the behavior of & in Bash and PowerShell 7 for the scope of this variable.

$ErrorActionPreference lets you control the behavior of what happens when a statement fails but is a non-terminating error (which are most errors including command not found errors). Personally, I prefer to run things so that if one thing fails the whole line stops in the REPL and I imagine a lot of other folks do as well.

#POWERSHELL SSH SHELL STREAM MULTIPLE COMMANDS SEQUENTIALLY INSTALL#

This allows you to use them with native commandsįor PowerShell 5 (default install for Windows machines for the foreseeable future), you can of course use a semicolon to separate statements, but all statements will be executed by default even if one fails. If I add a second command right after the first one execute one command on Cisco switch SshCommand SshClient.RunCommand ('show arp') SshCommand SshClient.RunCommand ('show start'). These operators use the $? and $LASTEXITCODE variables to determine ifĪ pipeline failed. Ipconfig & Write-Error "abc" || ipconfig: abc This also works for old cmd-like commands like ipconfig PS Z:\Powershell-Scripts> ipconfig & Write-Error "abc" || ipconfig Of course you can chain them even more together like x & y || z etc. Write-Error "This is an error" || Write-Host "That's why this runs": This is an error PS Z:\Powershell-Scripts> Write-Error "This is an error" || Write-Host "That's why this runs" PS Z:\Powershell-Scripts> Write-Host "This will succeed" || Write-Host "This won't run" Write-Error "This is an error" & Write-Host "So this shouldn't run": This is an error PS Z:\Powershell-Scripts> Write-Error "This is an error" & Write-Host "So this shouldn't run" || this will run the second command only if the first one fails.Įxamples: PS Z:\Powershell-Scripts> Write-Host "This will succeed" & Write-Host "So this will run too".& this will run the second command only if the first one succeeds.

In PowerShell 7, we have Pipeline chain operators which allows you to add some conditional element to your sequential one-line commands