[PLUG] tasklist.exe is a handy Windows CLI tool similar to ps/top

[JP Vossen <jp@jpsdomain.org>]

OK, "slightly similar" might be better, but...  If you are in a mixed 
environment and used to Unix'y CLI tools like ps and hate Windows GUI 
tools, there is a handy tool present in XP2, but not W2KPro. 
Fortunately I'm not afflicted by Vista, but I'd assume it's there too.

C:\> tasklist

Image Name                   PID Session Name     Session#    Mem Usage
========================= ====== ================ ======== ============
System Idle Process            0                         0         16 K
System                         4                         0         40 K
smss.exe                     752                         0         48 K
csrss.exe                    844                         0      3,400 K
winlogon.exe                 872                         0      3,500 K
services.exe                 916                         0      1,704 K
lsass.exe                    928                         0      2,648 K
svchost.exe                 1100                         0      1,268 K
svchost.exe                 1156                         0      1,752 K
svchost.exe                 1656                         0     12,364 K
[...]


'tasklist /?' gives lots of options.  /M's output is fascinating and 
illuminating.  After a bit of Perl munging it shows 733 unique DLLs in 
use on my XP2 system right now.  It can also do CSV output, which is 
quite handy, though the memory use numbers have comma thousands 
separators, which complicates both parsing the CSV and doing any math. 
(Presumably, tr -d could fix that, though I just used Perl [1].)

# Using ActivePerl and http://unxutils.sourceforge.net/
C:\> tasklist /M | perl -ne "while ( m/(\w+\.dll)/ig ) { print qq($1\n); 
}" | sort | uniq -c | sort -rn | wc -l
     733

C:\> tasklist /M | perl -ne "while ( m/(\w+\.dll)/ig ) { print qq($1\n); 
}" | sort | uniq -c | sort -rn
      63	ntdll.dll
      62	USER32.dll
      62	RPCRT4.dll
      62	GDI32.dll
      61	wmfhotfix.dll
      61	kernel32.dll
      59	ADVAPI32.dll
      57	msvcrt.dll
      56	VERSION.dll
      56	SHLWAPI.dll
[...]


Enjoy,
JP

[1] List memory used, sum and name:
C:\> tasklist | perl -ne "tr /,//d; $sum += $2 if 
m/^([\w.+]+)\s.*?([\d,]+) K$/; print qq($2\t$sum\t$1\n);"
----------------------------|:::======|-------------------------------
JP Vossen, CISSP            |:::======|        jp{at}jpsdomain{dot}org
My Account, My Opinions     |=========|      http://www.jpsdomain.org/
----------------------------|=========|-------------------------------
Microsoft has single-handedly nullified Moore's Law.
Innate design flaws of Windows make a personal firewall, anti-virus
and anti-malware software mandatory. The resulting software arms race
has effectively flattened Moore's Law on hardware running Windows.
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