How to List All Processes Running in Windows

How do you list all processes on the command line in Windows?

Working with cmd.exe:

tasklist

If you have Powershell:

get-process

Via WMI:

wmic process

(you can query remote machines as well with /node:ComputerOrIP, and there are a LOT more ways to customize this command: link)

How can I list all processes running in Windows?

Finding all of the processes

You can do this through the Process class

using System.Diagnostics;
...
var allProcesses = Process.GetProcesses();

Running Diagnostics

Can you give us some more information here? It's not clear what you want to do.

The Process class provides a bit of information though that might help you out. It is possible to query this class for

• All threads
• Main Window Handle
• All loaded modules
• Various diagnostic information about Memory (Paged, Virtual, Working Set, etc ...)
• Basic Process Information (id, name, disk location)

EDIT

OP mentioned they want to get memory and CPU information. These properties are readily available on the Process class (returned by GetProcesses()). Below is the MSDN page that lists all of the supported properties. There are various memory and CPU ones available that will suite your needs.

http://msdn.microsoft.com/en-us/library/system.diagnostics.process.aspx

Code:

Add this line to your using list:

using System.Diagnostics;

Now you can get a list of the processes with the Process.GetProcesses() method, as seen in this example:

Process[] processlist = Process.GetProcesses();

foreach (Process theprocess in processlist)
{
    Console.WriteLine("Process: {0} ID: {1}", theprocess.ProcessName, theprocess.Id);
}

Get list of running processes

You can use tasklist:

system2( 'tasklist' , stdout = TRUE )
  [1] ""                                                                            
  [2] "Nom de l'image                 PID Nom de la sessio Num‚ro de s Utilisation "
  [3] "========================= ======== ================ =========== ============"
  [4] "System Idle Process              0 Services                   0        24 Ko"

EDIT to get the R process:

grep("^rsession",readLines(textConnection(system('tasklist',intern=TRUE))),value=TRUE)
[1] "rsession.exe                  6772 Console                    1   387,420 Ko"
[2] "rsession.exe                  7984 Console                    1    48,436 Ko"
[3] "rsession.exe                  1272 Console                    1    80,572 Ko"

List running processes on 64-bit Windows

There is another recipe on activestate that does a similar thing, but uses the Performance Data Helper library (PDH) instead.

I have tested this on my Windows 7 64bit machine and it works there - so presumably the same function will work on both 32bit and 64 bit windows.

You can find the recipe here: http://code.activestate.com/recipes/303339/

Another method is using WMI, there is an example here in Python using the wmi module:

http://timgolden.me.uk/python/wmi/cookbook.html

import wmi
c = wmi.WMI ()

for process in c.Win32_Process ():
  print process.ProcessId, process.Name

List all processes that currently running on windows by VB.NET 2.0

You can use Process.GetProcesses function

try this code.

    For Each OneProcess As Process In Process.GetProcesses
        ListBox1.Items.Add(OneProcess.ProcessName)
    Next

How do I find out which process is listening on a TCP or UDP port on Windows?

PowerShell

TCP

Get-Process -Id (Get-NetTCPConnection -LocalPort YourPortNumberHere).OwningProcess

UDP

Get-Process -Id (Get-NetUDPEndpoint -LocalPort YourPortNumberHere).OwningProcess

cmd

 netstat -a -b

(Add -n to stop it trying to resolve hostnames, which will make it a lot faster.)

Note Dane's recommendation for TCPView. It looks very useful!

-a Displays all connections and listening ports.

-b Displays the executable involved in creating each connection or listening port. In some cases well-known executables host multiple independent components, and in these cases the sequence of components involved in creating the connection or listening port is displayed. In this case the executable name is in [] at the bottom, on top is the component it called, and so forth until TCP/IP was reached. Note that this option can be time-consuming and will fail unless you have sufficient permissions.

-n Displays addresses and port numbers in numerical form.

-o Displays the owning process ID associated with each connection.

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