pslist

Usage: pslist [-d][-m][-x][-t][-s [n] [-r n] [\computer [-u username][-p password][name|pid]
-d Show thread detail.
-m Show memory detail.
-x Show processes, memory information and threads.
-t Show process tree.
-s [n] Run in task-manager mode, for optional seconds specified.
Press Escape to abort.
-r n Task-manager mode refresh rate in seconds (default is 1).
\computer Specifies remote computer.
-u Optional user name for remote login.
-p Optional password for remote login. If you don’t present
on the command line pslist will prompt you for it if necessary.
name Show information about processes that begin with the name
specified.
-e Exact match the process name.
pid Show information about specified process.

All memory values are displayed in KB.
Abbreviation key:
Pri Priority
Thd Number of Threads
Hnd Number of Handles
VM Virtual Memory
WS Working Set
Priv Private Virtual Memory
Priv Pk Private Virtual Memory Peak
Faults Page Faults
NonP Non-Paged Pool
Page Paged Pool
Cswtch Context Switches