FYI, tasklist and taskkill already have filtering capabilities:
tasklist /FI "imagename eq chrome.exe"
taskkill /F /FI "imagename eq iexplore.exe"
If you want more general functionality, batch scripts (ugh) can help. For example:
for /f "tokens=1,2 delims= " %%i in ('tasklist /v') do (
if "%%i" == "%~1" (
echo TASKKILL /PID %%j
)
)
There's a fair amount of help for the windows command-line. Type "help" to get a list of commands with a simple summary then type "help " for more information about that command (e.g. "help for").