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To: cygwin AT cygwin DOT com
From: Szymon Lapinski <gandalf AT syncad DOT com>
Subject:  cygwin-1.5.24-2 serious shell execution performance degradation on  WinXP x64 SP2
Date:  Mon, 03 Sep 2007 13:03:09 +0200
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Recently I found a serious performance degradation in my gawk scripts 
while running on WinXP x64 SP2, it appears that this is not only gawk 
problem, but spawning child processes in a subshell at all.

I'm not sure if this was caused by SP2 or by some of following Windows 
updates but it used to work well before SP2, and still works well on 
Windows 2000.

In my gawk scripts I'm doing a lot of system() - spawning subshells to 
run commands like 'mv' or 'test -d'.

How to reproduce this problem:

time gawk 'BEGIN{for(i=1;i<1000;i++){system("true")}}'
time for i in `seq 1 1000`; do bash -c true; done

Each of above commands used to end in under 30 seconds.
Now on WinXP x64 SP2 it runs much more than 2 minutes.

'cygcheck -s -v -r' output included in attachment

-- 
Regards,
Szymon Lapinski

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 filename="cygcheck.out"


Cygwin Configuration Diagnostics
Current System Time: Mon Sep 03 11:28:16 2007

Windows 2003 Server Ver 5.2 Build 3790 Service Pack 2

Running under WOW64 on AMD64

Running in Terminal Service session

Path:	C:\cygwin\usr\local\bin
	C:\cygwin\bin
	C:\cygwin\bin
	C:\cygwin\usr\X11R6\bin
	c:\WINDOWS\system32
	c:\WINDOWS
	c:\WINDOWS\System32\Wbem
	C:\cygwin\bin

Output from C:\cygwin\bin\id.exe (nontsec)
UID: 500(Administrator)   GID: 513(None)
0(root)                   513(None)                 544(Administrators)
555(Remote Desktop Users) 545(Users)

Output from C:\cygwin\bin\id.exe (ntsec)
UID: 500(Administrator)   GID: 513(None)
0(root)                   513(None)                 544(Administrators)
555(Remote Desktop Users) 545(Users)

SysDir: C:\WINDOWS\system32
WinDir: C:\WINDOWS

USER = 'Administrator'
PWD = '/home/Administrator'
HOME = '/home/Administrator'
MAKE_MODE = 'unix'

HOMEPATH = '\Documents and Settings\Administrator'
MANPATH = '/usr/local/man:/usr/share/man:/usr/man::/usr/ssl/man'
APPDATA = 'C:\Documents and Settings\Administrator\Application Data'
PROGRAMW6432 = 'C:\Program Files'
HOSTNAME = 'c2d'
TERM = 'cygwin'
PROCESSOR_IDENTIFIER = 'EM64T Family 6 Model 15 Stepping 6, GenuineIntel'
WINDIR = 'C:\WINDOWS'
COMMONPROGRAMW6432 = 'C:\Program Files\Common Files'
OLDPWD = '/cygdrive/c/cygwin/usr'
USERDOMAIN = 'C2D'
COMMONPROGRAMFILES(X86) = 'C:\Program Files (x86)\Common Files'
OS = 'Windows_NT'
ALLUSERSPROFILE = 'C:\Documents and Settings\All Users'
TEMP = '/cygdrive/c/DOCUME~1/ADMINI~1/LOCALS~1/Temp'
COMMONPROGRAMFILES = 'C:\Program Files (x86)\Common Files'
USERNAME = 'Administrator'
PROCESSOR_LEVEL = '6'
FP_NO_HOST_CHECK = 'NO'
SYSTEMDRIVE = 'C:'
PROCESSOR_ARCHITEW6432 = 'AMD64'
USERPROFILE = 'C:\Documents and Settings\Administrator'
CLIENTNAME = 'gandalf'
PS1 = '\[\e]0;\w\a\]\n\[\e[32m\]\u@\h \[\e[33m\]\w\[\e[0m\]\n\$ '
LOGONSERVER = '\\C2D'
PROCESSOR_ARCHITECTURE = 'x86'
!C: = 'C:\cygwin\bin'
SHLVL = '1'
PATHEXT = '.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH'
HOMEDRIVE = 'C:'
PROMPT = '$P$G'
COMSPEC = 'C:\WINDOWS\system32\cmd.exe'
TMP = '/cygdrive/c/DOCUME~1/ADMINI~1/LOCALS~1/Temp'
SYSTEMROOT = 'C:\WINDOWS'
CVS_RSH = '/bin/ssh'
PROCESSOR_REVISION = '0f06'
INFOPATH = '/usr/local/info:/usr/share/info:/usr/info:'
PROGRAMFILES = 'C:\Program Files (x86)'
NUMBER_OF_PROCESSORS = '2'
PROGRAMFILES(X86) = 'C:\Program Files (x86)'
SESSIONNAME = 'RDP-Tcp#2'
COMPUTERNAME = 'C2D'
_ = '/usr/bin/cygcheck'
POSIXLY_CORRECT = '1'

HKEY_CURRENT_USER\Software\Cygnus Solutions
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\Program Options
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2
  (default) = '/cygdrive'
  cygdrive flags = 0x00000022
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/
  (default) = 'C:\cygwin'
  flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/bin
  (default) = 'C:\cygwin/bin'
  flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/lib
  (default) = 'C:\cygwin/lib'
  flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\Program Options

c:  hd  NTFS     81917Mb  32% CP CS UN PA FC     
d:  hd  FAT32    19993Mb   1% CP    UN           FAT32-DEF
e:  hd  NTFS     20002Mb   1% CP CS UN PA FC     NTFS-DEF

C:\cygwin      /          system  binmode
C:\cygwin/bin  /usr/bin   system  binmode
C:\cygwin/lib  /usr/lib   system  binmode
.              /cygdrive  system  binmode,cygdrive

Found: C:\cygwin\bin\awk.exe
Found: C:\cygwin\bin\bash.exe
Found: C:\cygwin\bin\cat.exe
Found: C:\cygwin\bin\cp.exe
Not Found: cpp (good!)
Not Found: crontab
Found: C:\cygwin\bin\find.exe
Not Found: gcc
Not Found: gdb
Found: C:\cygwin\bin\grep.exe
Found: C:\cygwin\bin\kill.exe
Not Found: ld
Found: C:\cygwin\bin\ls.exe
Not Found: make
Found: C:\cygwin\bin\mv.exe
Found: C:\cygwin\bin\patch.exe
Found: C:\cygwin\bin\perl.exe
Found: C:\cygwin\bin\rm.exe
Found: C:\cygwin\bin\sed.exe
Found: C:\cygwin\bin\ssh.exe
Found: C:\cygwin\bin\sh.exe
Found: C:\cygwin\bin\tar.exe
Found: C:\cygwin\bin\test.exe
Not Found: vi
Not Found: vim

   87k 2006/02/16 C:\cygwin\bin\cygatk-1.0-0.dll - os=4.0 img=1.0 sys=4.0
                  "cygatk-1.0-0.dll" v0.0 ts=2006/2/6 22:13
   61k 2006/11/10 C:\cygwin\bin\cygbz2-1.dll - os=4.0 img=1.0 sys=4.0
                  "cygbz2-1.dll" v0.0 ts=2006/11/11 0:42
    7k 2003/10/19 C:\cygwin\bin\cygcrypt-0.dll - os=4.0 img=1.0 sys=4.0
                  "cygcrypt-0.dll" v0.0 ts=2003/10/19 9:57
 1125k 2006/10/04 C:\cygwin\bin\cygcrypto-0.9.7.dll - os=4.0 img=1.0 sys=4.0
                  "cygcrypto-0.9.7.dll" v0.0 ts=2006/10/4 14:12
 1059k 2007/03/29 C:\cygwin\bin\cygcrypto-0.9.8.dll - os=4.0 img=1.0 sys=4.0
                  "cygcrypto-0.9.8.dll" v0.0 ts=2007/3/29 12:13
  895k 2004/04/28 C:\cygwin\bin\cygdb-4.2.dll - os=4.0 img=1.0 sys=4.0
                  "cygdb-4.2.dll" v0.0 ts=2004/4/27 17:31
  965k 2005/05/14 C:\cygwin\bin\cygdb-4.3.dll - os=4.0 img=1.0 sys=4.0
                  "cygdb-4.3.dll" v0.0 ts=2005/5/14 14:37
 1156k 2004/04/28 C:\cygwin\bin\cygdb_cxx-4.2.dll - os=4.0 img=1.0 sys=4.0
                  "cygdb_cxx-4.2.dll" v0.0 ts=2004/4/27 17:35
 1240k 2005/05/14 C:\cygwin\bin\cygdb_cxx-4.3.dll - os=4.0 img=1.0 sys=4.0
                  "cygdb_cxx-4.3.dll" v0.0 ts=2005/5/14 14:41
  118k 2007/04/06 C:\cygwin\bin\cygexpat-0.dll - os=4.0 img=1.0 sys=4.0
                  "cygexpat-0.dll" v0.0 ts=2007/4/6 22:43
   40k 2006/11/15 C:\cygwin\bin\cygform-8.dll - os=4.0 img=1.0 sys=4.0
                  "cygform-8.dll" v0.0 ts=2006/11/15 8:06
   45k 2001/04/25 C:\cygwin\bin\cygform5.dll - os=4.0 img=1.0 sys=4.0
                  "cygform5.dll" v0.0 ts=2001/4/25 7:28
   35k 2002/01/09 C:\cygwin\bin\cygform6.dll - os=4.0 img=1.0 sys=4.0
                  "cygform6.dll" v0.0 ts=2002/1/9 7:03
   48k 2003/08/09 C:\cygwin\bin\cygform7.dll - os=4.0 img=1.0 sys=4.0
                  "cygform7.dll" v0.0 ts=2003/8/9 11:25
   28k 2003/07/20 C:\cygwin\bin\cyggdbm-3.dll - os=4.0 img=1.0 sys=4.0
                  "cyggdbm-3.dll" v0.0 ts=2003/7/20 9:58
   19k 2006/11/19 C:\cygwin\bin\cyggdbm-4.dll - os=4.0 img=1.0 sys=4.0
                  "cyggdbm-4.dll" v0.0 ts=2006/11/19 9:18
   19k 2003/03/22 C:\cygwin\bin\cyggdbm.dll - os=4.0 img=1.0 sys=4.0
                  "cyggdbm.dll" v0.0 ts=2002/2/20 4:05
   15k 2003/07/20 C:\cygwin\bin\cyggdbm_compat-3.dll - os=4.0 img=1.0 sys=4.0
                  "cyggdbm_compat-3.dll" v0.0 ts=2003/7/20 10:00
    8k 2006/11/19 C:\cygwin\bin\cyggdbm_compat-4.dll - os=4.0 img=1.0 sys=4.0
                  "cyggdbm_compat-4.dll" v0.0 ts=2006/11/19 9:18
  515k 2006/06/06 C:\cygwin\bin\cygglib-2.0-0.dll - os=4.0 img=1.0 sys=4.0
                  "cygglib-2.0-0.dll" v0.0 ts=2006/6/6 0:32
   10k 2006/06/06 C:\cygwin\bin\cyggmodule-2.0-0.dll - os=4.0 img=1.0 sys=4.0
                  "cyggmodule-2.0-0.dll" v0.0 ts=2006/6/6 0:36
  222k 2006/06/06 C:\cygwin\bin\cyggobject-2.0-0.dll - os=4.0 img=1.0 sys=4.0
                  "cyggobject-2.0-0.dll" v0.0 ts=2006/6/6 0:35
   14k 2006/06/06 C:\cygwin\bin\cyggthread-2.0-0.dll - os=4.0 img=1.0 sys=4.0
                  "cyggthread-2.0-0.dll" v0.0 ts=2006/6/6 0:36
   17k 2001/06/28 C:\cygwin\bin\cyghistory4.dll - os=4.0 img=1.0 sys=4.0
                  "cyghistory4.dll" v0.0 ts=2001/1/7 5:34
   29k 2003/08/10 C:\cygwin\bin\cyghistory5.dll - os=4.0 img=1.0 sys=4.0
                  "cyghistory5.dll" v0.0 ts=2003/8/11 1:16
   25k 2007/08/23 C:\cygwin\bin\cyghistory6.dll - os=4.0 img=1.0 sys=4.0
                  "cyghistory6.dll" v0.0 ts=2007/8/24 0:01
  271k 2007/08/24 C:\cygwin\bin\cygicons-0.dll - os=4.0 img=1.0 sys=4.0
                  "cygicons-0.dll" v0.0 ts=2007/8/24 9:24
  976k 2006/10/22 C:\cygwin\bin\cygiconv-2.dll - os=4.0 img=1.0 sys=4.0
                  "cygiconv-2.dll" v0.0 ts=2006/10/23 1:44
   22k 2001/12/13 C:\cygwin\bin\cygintl-1.dll - os=4.0 img=1.0 sys=4.0
                  "cygintl-1.dll" v0.0 ts=2001/12/13 10:28
   37k 2003/08/10 C:\cygwin\bin\cygintl-2.dll - os=4.0 img=1.0 sys=4.0
                  "cygintl-2.dll" v0.0 ts=2003/8/10 23:50
   31k 2005/11/20 C:\cygwin\bin\cygintl-3.dll - os=4.0 img=1.0 sys=4.0
                  "cygintl-3.dll" v0.0 ts=2005/11/20 3:04
   31k 2006/10/23 C:\cygwin\bin\cygintl-8.dll - os=4.0 img=1.0 sys=4.0
                  "cygintl-8.dll" v0.0 ts=2006/10/23 2:12
   21k 2001/06/20 C:\cygwin\bin\cygintl.dll - os=4.0 img=1.0 sys=4.0
                  "cygintl.dll" v0.0 ts=2001/6/20 19:09
   12k 2003/02/17 C:\cygwin\bin\cygioperm-0.dll - os=4.0 img=1.0 sys=4.0
                  "cygioperm-0.dll" v0.0 ts=2003/2/17 20:58
   83k 2007/06/06 C:\cygwin\bin\cygmagic-1.dll - os=4.0 img=1.0 sys=4.0
                  "cygmagic-1.dll" v0.0 ts=2007/6/6 12:41
   21k 2006/11/15 C:\cygwin\bin\cygmenu-8.dll - os=4.0 img=1.0 sys=4.0
                  "cygmenu-8.dll" v0.0 ts=2006/11/15 8:05
   26k 2001/04/25 C:\cygwin\bin\cygmenu5.dll - os=4.0 img=1.0 sys=4.0
                  "cygmenu5.dll" v0.0 ts=2001/4/25 7:27
   20k 2002/01/09 C:\cygwin\bin\cygmenu6.dll - os=4.0 img=1.0 sys=4.0
                  "cygmenu6.dll" v0.0 ts=2002/1/9 7:03
   29k 2003/08/09 C:\cygwin\bin\cygmenu7.dll - os=4.0 img=1.0 sys=4.0
                  "cygmenu7.dll" v0.0 ts=2003/8/9 11:25
   20k 2006/12/21 C:\cygwin\bin\cygminires.dll - os=4.0 img=1.1 sys=4.0
                  "cygminires.dll" v0.0 ts=2006/12/21 6:07
   67k 2006/11/15 C:\cygwin\bin\cygncurses++-8.dll - os=4.0 img=1.0 sys=4.0
                  "cygncurses++-8.dll" v0.0 ts=2006/11/15 8:13
  156k 2001/04/25 C:\cygwin\bin\cygncurses++5.dll - os=4.0 img=1.0 sys=4.0
                  "cygncurses++5.dll" v0.0 ts=2001/4/25 7:29
  175k 2002/01/09 C:\cygwin\bin\cygncurses++6.dll - os=4.0 img=1.0 sys=4.0
                  "cygncurses++6.dll" v0.0 ts=2002/1/9 7:03
  237k 2006/11/15 C:\cygwin\bin\cygncurses-8.dll - os=4.0 img=1.0 sys=4.0
                  "cygncurses-8.dll" v0.0 ts=2006/11/15 8:02
  226k 2001/04/25 C:\cygwin\bin\cygncurses5.dll - os=4.0 img=1.0 sys=4.0
                  "cygncurses5.dll" v0.0 ts=2001/4/25 7:17
  202k 2002/01/09 C:\cygwin\bin\cygncurses6.dll - os=4.0 img=1.0 sys=4.0
                  "cygncurses6.dll" v0.0 ts=2002/1/9 7:03
  224k 2003/08/09 C:\cygwin\bin\cygncurses7.dll - os=4.0 img=1.0 sys=4.0
                  "cygncurses7.dll" v0.0 ts=2003/8/9 11:24
   12k 2006/11/15 C:\cygwin\bin\cygpanel-8.dll - os=4.0 img=1.0 sys=4.0
                  "cygpanel-8.dll" v0.0 ts=2006/11/15 8:04
   15k 2001/04/25 C:\cygwin\bin\cygpanel5.dll - os=4.0 img=1.0 sys=4.0
                  "cygpanel5.dll" v0.0 ts=2001/4/25 7:27
   12k 2002/01/09 C:\cygwin\bin\cygpanel6.dll - os=4.0 img=1.0 sys=4.0
                  "cygpanel6.dll" v0.0 ts=2002/1/9 7:03
   19k 2003/08/09 C:\cygwin\bin\cygpanel7.dll - os=4.0 img=1.0 sys=4.0
                  "cygpanel7.dll" v0.0 ts=2003/8/9 11:24
  133k 2007/06/27 C:\cygwin\bin\cygpcre-0.dll - os=4.0 img=1.0 sys=4.0
                  "cygpcre-0.dll" v0.0 ts=2007/6/27 5:49
  303k 2007/06/27 C:\cygwin\bin\cygpcrecpp-0.dll - os=4.0 img=1.0 sys=4.0
                  "cygpcrecpp-0.dll" v0.0 ts=2007/6/27 5:50
    7k 2007/06/27 C:\cygwin\bin\cygpcreposix-0.dll - os=4.0 img=1.0 sys=4.0
                  "cygpcreposix-0.dll" v0.0 ts=2007/6/27 5:50
 1224k 2007/07/19 C:\cygwin\bin\cygperl5_8.dll - os=4.0 img=1.0 sys=4.0
                  "cygperl5_8.dll" v0.0 ts=2007/7/8 21:14
   22k 2002/06/09 C:\cygwin\bin\cygpopt-0.dll - os=4.0 img=1.0 sys=4.0
                  "cygpopt-0.dll" v0.0 ts=2002/6/9 7:45
  108k 2001/06/28 C:\cygwin\bin\cygreadline4.dll - os=4.0 img=1.0 sys=4.0
                  "cygreadline4.dll" v0.0 ts=2001/1/7 5:34
  148k 2003/08/10 C:\cygwin\bin\cygreadline5.dll - os=4.0 img=1.0 sys=4.0
                  "cygreadline5.dll" v0.0 ts=2003/8/11 1:16
  154k 2007/08/23 C:\cygwin\bin\cygreadline6.dll - os=4.0 img=1.0 sys=4.0
                  "cygreadline6.dll" v0.0 ts=2007/8/24 0:01
  231k 2006/10/04 C:\cygwin\bin\cygssl-0.9.7.dll - os=4.0 img=1.0 sys=4.0
                  "cygssl-0.9.7.dll" v0.0 ts=2006/10/4 14:12
  217k 2007/03/29 C:\cygwin\bin\cygssl-0.9.8.dll - os=4.0 img=1.0 sys=4.0
                  "cygssl-0.9.8.dll" v0.0 ts=2007/3/29 12:13
 1069k 2007/05/22 C:\cygwin\bin\cygxml2-2.dll - os=4.0 img=1.0 sys=4.0
                  "cygxml2-2.dll" v0.0 ts=2007/5/22 8:49
   65k 2006/10/16 C:\cygwin\bin\cygz.dll - os=4.0 img=1.0 sys=4.0
                  "cygz.dll" v0.0 ts=2006/10/16 3:10
 1830k 2007/01/31 C:\cygwin\bin\cygwin1.dll - os=4.0 img=1.0 sys=4.0
                  "cygwin1.dll" v0.0 ts=2007/1/31 10:58
    Cygwin DLL version info:
        DLL version: 1.5.24
        DLL epoch: 19
        DLL bad signal mask: 19005
        DLL old termios: 5
        DLL malloc env: 28
        API major: 0
        API minor: 156
        Shared data: 4
        DLL identifier: cygwin1
        Mount registry: 2
        Cygnus registry name: Cygnus Solutions
        Cygwin registry name: Cygwin
        Program options name: Program Options
        Cygwin mount registry name: mounts v2
        Cygdrive flags: cygdrive flags
        Cygdrive prefix: cygdrive prefix
        Cygdrive default prefix: 
        Build date: Wed Jan 31 10:57:51 CET 2007
        CVS tag: cr-0x5f1
        Shared id: cygwin1S4


No Cygwin services found.


Cygwin Package Information
Last downloaded files to: C:\Documents and Settings\Administrator\Desktop
Last downloaded files from: http://mirror.calvin.edu/cygwin

Package              Version
_update-info-dir     00543-1
alternatives         1.3.29a-1
ash                  20040127-3
atk                  1.10.3-1
atk-runtime          1.10.3-1
base-files           3.7-1
base-passwd          2.2-1
bash                 3.2.25-16
bc                   1.06-2
bzip2                1.0.3-2
clear                1.0-2
coreutils            6.9-5
crypt                1.1-1
cygrunsrv            1.17-1
cygutils             1.3.2-1
cygwin               1.5.24-2
cygwin-doc           1.4-4
diffutils            2.8.7-1
e2fsprogs            1.35-3
editrights           1.01-1
expat                1.95.8-2
file                 4.21-1
findutils            4.3.8-1
gawk                 3.1.5-4
gdbm                 1.8.3-8
glib2                2.10.3-1
glib2-runtime        2.10.3-1
grep                 2.5.1a-4
groff                1.18.1-2
gzip                 1.3.12-2
ioperm               0.4-1
joe                  3.5-1
less                 382-1
libbz2_1             1.0.3-2
libdb4.2             4.2.52-1
libdb4.3             4.3.28-1
libexpat0            1.95.8-2
libgdbm              1.8.0-5
libgdbm-devel        1.8.3-8
libgdbm3             1.8.3-3
libgdbm4             1.8.3-8
libiconv2            1.11-1
libintl              0.10.38-3
libintl1             0.10.40-1
libintl2             0.12.1-3
libintl3             0.14.5-1
libintl8             0.15-1
libncurses5          5.2-1
libncurses6          5.2-8
libncurses7          5.3-4
libncurses8          5.5-3
libpcre0             7.2-1
libpopt0             1.6.4-4
libreadline4         4.1-2
libreadline5         4.3-5
libreadline6         5.2.7-9
libxml2              2.6.28-2
libxml2-python       2.6.26-1
login                1.9-7
man                  1.6e-1
minires              1.01-1
mktemp               1.5-4
ncurses              5.5-3
openssh              4.6p1-1
openssl              0.9.8e-3
openssl097           0.9.7l-1
patch                2.5.8-9
perl                 5.8.8-4
pkg-config           0.21-1
pkgconfig            0.17.2-3
procps               3.2.7-1
psmisc               21.5-3
pylibxml2            2.6.28-2
python               2.5.1-2
rebase               2.4.3-1
rsync                2.6.9-2
run                  1.1.10-1
sed                  4.1.5-2
shutdown             1.7-1
tar                  1.18-2
tcltk                20060202-1
termcap              20050421-1
terminfo             5.5_20061104-1
texinfo              4.8a-1
time                 1.7-1
unzip                5.52-2
util-linux           2.12r-2
wget                 1.10.2-2
which                1.7-1
zip                  2.32-2
zlib                 1.2.3-2
Use -h to see help about each section


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