Mailing-List: contact cygwin-help AT sourceware DOT cygnus DOT com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT sources DOT redhat DOT com Delivered-To: mailing list cygwin AT sources DOT redhat DOT com X-Authentication-Warning: beta.cis.ohio-state.edu: sears owned process doing -bs Date: Mon, 2 Jul 2001 09:21:22 -0400 (EDT) From: russell christian sears To: Subject: 1.3.2, 1.1.8: Pipelines losing data? (Windows 2000) Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII I have found a problem using less and grep to search a file. The file is available at: http://www.cis.ohio-state.edu/~sears/file.txt (It is over 1 megabyte, so I did not include it in this message.) I am using bash, and a complete, current installation of cygwin. When I run the command `less file.txt | grep cygwin` it sometimes fails to find a match in the file, even though the file does contain the string. It seems to be sporadic, but I have been able to reproduce the problem on three machines, each of which ran at about 700mhz. Other commands that seem to work as expected follow: less file.txt | cat | grep cygwin cat file.txt | grep cygwin grep cygwin file.txt If you have difficulty reproducing the bug, try running the command multiple times (eg: by repeating , rapidly). Some installations will only rarely have a problem, others will rarely yield the correct result. On systems that usually produce the correct result, re-running the command rapidly seems to increase the likelihood of the problem ocurring. Also, the string "cygwin" always appears at the end of a line in the file, which may be related to this bug. I have tried both version 1.1.8 and the current cygwin distribution. (1.3.2) Both seem to suffer from this problem. As a control, I've checked this against a Linux system, and the bug did not exist there. Below, the mount mode is listed as textmode. The bug exists under binmode as well. Here is the output of cygcheck -s -v -r > cygcheck.out: Cygnus Win95/NT Configuration Diagnostics Current System Time: Thu Jun 28 15:48:34 2001 WinNT Ver 5.0 build 2195 Path: /usr/local/bin /usr/bin /bin /cygdrive/c/Perl/bin/ /cygdrive/c/WINNT/system32 /cygdrive/c/WINNT /cygdrive/c/WINNT/System32/Wbem SysDir: C:\WINNT\System32 WinDir: C:\WINNT PWD = `/home/Administrator' USER = `Administrator' MAKE_MODE = `unix' HOME = `/home/Administrator' NUMBER_OF_PROCESSORS = `1' PROMPT = `$P$G' LOGONSERVER = `\\SERVER-2' OS2LIBPATH = `C:\WINNT\system32\os2\dll;' COMSPEC = `C:\WINNT\system32\cmd.exe' !C: = `C:\cygwin\bin' SYSTEMDRIVE = `C:' HOSTNAME = `RSEARS' PROCESSOR_REVISION = `0803' PATHEXT = `.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH' COMPUTERNAME = `RSEARS' WINDIR = `C:\WINNT' USERPROFILE = `C:\Documents and Settings\rsears' PS1 = `\[\033]0;\w\007 \033[32m\]\u@\h \[\033[33m\w\033[0m\] $ ' HOMESHARE = `\\file1\users\rsears' PROGRAMFILES = `C:\Program Files' USERDNSDOMAIN = `colmol.com' MACHTYPE = `i686-pc-cygwin' PROCESSOR_IDENTIFIER = `x86 Family 6 Model 8 Stepping 3, GenuineIntel' OS = `Windows_NT' OLDPWD = `/usr/bin' PROCESSOR_ARCHITECTURE = `x86' TEMP = `/cygdrive/c/DOCUME~1/rsears/LOCALS~1/Temp' PROCESSOR_LEVEL = `6' SYSTEMROOT = `C:\WINNT' HOMEDRIVE = `M:' ALLUSERSPROFILE = `C:\Documents and Settings\All Users' SHLVL = `1' APPDATA = `C:\Documents and Settings\rsears\Application Data' COMMONPROGRAMFILES = `C:\Program Files\Common Files' HOMEPATH = `\' USERDOMAIN = `CMS' USERNAME = `rsears' SHELL = `/bin/bash' HOSTTYPE = `i686' OSTYPE = `cygwin' TERM = `cygwin' _ = `/usr/bin/cygcheck' TZ = `EST5EDT4,M4.1.0/2,M10.5.0/2' HKEY_CURRENT_USER\Software\Cygnus Solutions HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2 (default) = `/cygdrive' cygdrive flags = 0x00000020 HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\Program Options HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MenuOrder\S tart Menu\Programs\Cygnus Solutions (default) = (unsupported type) HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2 HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/ (default) = `C:\cygwin' flags = 0x00000008 HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/bin (default) = `C:/cygwin/bin' flags = 0x00000008 HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/lib (default) = `C:/cygwin/lib' flags = 0x00000008 HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\Program Options a: fd N/A N/A c: hd NTFS 28615Mb 19% CP CS UN PA FC d: cd N/A N/A m: net NTFS 131798Mb 26% CP CS UN PA FC Data Disk C:\cygwin\bin /usr/bin system textmode C:\cygwin\lib /usr/lib system textmode C:\cygwin / system textmode c: /cygdrive/c user textmode,noumount m: /cygdrive/m user textmode,noumount Found: C:\cygwin\bin\bash.exe Found: C:\cygwin\bin\cat.exe Found: C:\cygwin\bin\cpp.exe Found: C:\cygwin\bin\find.exe Found: C:\cygwin\bin\gcc.exe Found: C:\cygwin\bin\gdb.exe Found: C:\cygwin\bin\ld.exe Found: C:\cygwin\bin\ls.exe Found: C:\cygwin\bin\make.exe Found: C:\cygwin\bin\sh.exe 56k 2000/12/03 C:\cygwin\bin\cygbz21.0.dll - os=4.0 img=1.0 sys=4.0 "cygbz21.0.dll" v0.0 ts=2000/11/20 18:53 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 1:28 18k 2000/10/23 C:\cygwin\bin\cyggdbm.dll - os=4.0 img=1.0 sys=4.0 "cyggdbm.dll" v0.0 ts=2000/10/22 22:26 17k 2001/01/07 C:\cygwin\bin\cyghistory4.dll - os=4.0 img=1.0 sys=4.0 "cyghistory4.dll" v0.0 ts=2001/1/6 23:34 14k 2000/10/23 C:\cygwin\bin\cygintl.dll - os=4.0 img=1.0 sys=4.0 "cygintl.dll" v0.0 ts=2000/10/23 15:02 81k 2000/12/05 C:\cygwin\bin\cygitcl30.dll - os=4.0 img=1.0 sys=4.0 "cygitcl30.dll" v0.0 ts=2000/11/25 20:43 35k 2000/12/05 C:\cygwin\bin\cygitk30.dll - os=4.0 img=1.0 sys=4.0 "cygitk30.dll" v0.0 ts=2000/11/25 20:43 45k 2000/10/22 C:\cygwin\bin\cygjbig1.dll - os=4.0 img=1.0 sys=4.0 "cygjbig1.dll" v0.0 ts=2000/10/22 19:06 119k 2001/06/06 C:\cygwin\bin\cygjpeg6b.dll - os=4.0 img=1.0 sys=4.0 "cygjpeg6b.dll" v0.0 ts=2001/6/6 0:27 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 1:27 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 1:29 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 1:17 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 1:27 163k 2001/05/06 C:\cygwin\bin\cygpng2.dll - os=4.0 img=1.0 sys=4.0 "cygpng2.dll" v0.0 ts=2001/5/6 0:05 108k 2001/01/07 C:\cygwin\bin\cygreadline4.dll - os=4.0 img=1.0 sys=4.0 "cygreadline4.dll" v0.0 ts=2001/1/6 23:34 390k 2000/12/05 C:\cygwin\bin\cygtcl80.dll - os=4.0 img=1.0 sys=4.0 "cygtcl80.dll" v0.0 ts=2000/11/25 20:39 5k 2000/12/05 C:\cygwin\bin\cygtclpip80.dll - os=4.0 img=1.0 sys=4.0 10k 2000/12/05 C:\cygwin\bin\cygtclreg80.dll - os=4.0 img=1.0 sys=4.0 "cygtclreg80.dll" v0.0 ts=2000/11/25 20:39 245k 2001/06/12 C:\cygwin\bin\cygtiff3.dll - os=4.0 img=1.0 sys=4.0 "cygtiff3.dll" v0.0 ts=2001/6/12 13:25 623k 2000/12/05 C:\cygwin\bin\cygtk80.dll - os=4.0 img=1.0 sys=4.0 "cygtk80.dll" v0.0 ts=2000/11/25 20:43 41k 2001/05/28 C:\cygwin\bin\cygXpm-noX4.dll - os=4.0 img=1.0 sys=4.0 "cygXpm-noX4.dll" v0.0 ts=2001/5/28 13:57 49k 2001/02/03 C:\cygwin\bin\cygz.dll - os=4.0 img=1.0 sys=4.0 "cygz.dll" v0.0 ts=2001/2/3 15:35 678k 2001/05/21 C:\cygwin\bin\cygwin1.dll - os=4.0 img=1.0 sys=4.0 "cygwin1.dll" v0.0 ts=2001/5/20 23:28 Cygwin DLL version info: dll major: 1003 dll minor: 2 dll epoch: 19 dll bad signal mask: 19005 dll old termios: 5 dll malloc env: 28 api major: 0 api minor: 39 shared data: 3 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: Sun May 20 23:28:17 EDT 2001 shared id: cygwin1S3 Use -h to see help about each section -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/