Stop Windows processes remotely

Some customer called saying that they couldn’t log in to a certain Windows box. vMware told me the VM was using 100% CPU, and it was to busy doing something to let users log in.
Powershell saved the day (or at least saved the VM from beeing reset)
To find the process running wild I used the invoke-command cmdlet, like this:

invoke-command -scriptblok(get-process | sort-property CPU -Descending | select -first 10) -computername “Windows Hostname” | ft -autosize

This gave me a nice list of processes with the one we should focus on in the top. Now all i needed to do was:

invoke-command -scriptblok(stop-process -Id “pid”) -computername “Windows Hostname”

The process was stopped, and CPU usage fell to 0-2% allowing application people to login and investigate what happened.

Test network connection with powershell

Sometimes you need to test the network connection for a range of IP addresses. Normally I would use ping from a commandline, but it could be a hugh task to test more than 20-30 addresses.
Utilizing a bit of powershell and the test-connection command will help us overcome the task in an easy way:

1..100 | %{write-host -nonewline "Testing 10.0.0.$_ : "; Test-Connection 10.0.0.$_ -quiet -Count 1}

The above one-liner will test the connection to all hosts in a range from 10.0.0.1 to 10.0.0.100 and giva a False or True status.
Remember that % is a short way of using the foreach loop, so you could use “foreach” instead of %.

Using Vim as editor in PowerShell

If you are used to using Vim or Vi as your editor, you might miss it when using powershell. Good news is, theres a way to get it. Download and install Vim for windows, create a profile.ps1 file in this path: (for me at least) c:\users\%username%\documents\WindowsPowerShell\ and type in the following:

$VIMPATH    = “C:\Program Files (x86)\Vim\vim74\vim.exe”

Set-Alias vi   $VIMPATH
Set-Alias vim  $VIMPATH

# for editing your PowerShell profile
Function Edit-Profile
{
vim $profile
}

# for editing your Vim settings
Function Edit-Vimrc
{
vim $home\_vimrc
}

Remember to change the $VIMPATH to your installation.

Now you have a fully functional vim from powershell.

/Kasper