;send "ls -altr" to all proxyterm windows 
WinGet, ControlList, ControlList, ahk_class ProxyWorkspaceClass
Loop, parse, ControlList, `n
{
    IfInString, A_LoopField, TerminalSplitterClass
    {
         ControlSend,%A_LoopField%,ls -altr{Enter}, ahk_class ProxyWorkspaceClass
    }
}