Twin directories of FileSystem:

[DIR]  ftp://ftp.kemsu.ru/pub/Software/Unix/FileSystem/
pkg://List-Filter-0.04.tar.gz:49371/List-Filter-0.03/t/dat/storage/code/lib/List/Filter/Library/  downloads[DIR]3  List-Filter-0.04.tar.gz/List-Filter-0.03/t/dat/storage/code/lib/List/Filter/Library/FileSystem/
pkg://List-Group-1.3.tar.gz:2439/List-Filter-0.04/t/dat/storage/code/lib/List/Filter/Library/  downloads[DIR]3  List-Group-1.3.tar.gz/List-Filter-0.04/t/dat/storage/code/lib/List/Filter/Library/FileSystem/
pkg://SystemTray-Applet-0.01.tar.gz:4542/SystemPreferences-1.0.2/Modules/  downloads[DIR]3  SystemTray-Applet-0.01.tar.gz/SystemPreferences-1.0.2/Modules/FileSystem/
pkg://Tie-Filehandle-Preempt-Stdin-0.01.tar.gz:10853/Tie-FileSystem-2.15/lib/Tie/  downloads[DIR]3  Tie-Filehandle-Preempt-Stdin-0.01.tar.gz/Tie-FileSystem-2.15/lib/Tie/FileSystem/
pkg://Win32-FileTime-0.03.tar.gz:3186/Win32-FileSystem-Watcher-0.1.0/lib/Win32/  downloads[DIR]3  Win32-FileTime-0.03.tar.gz/Win32-FileSystem-Watcher-0.1.0/lib/Win32/FileSystem/
pkg://ccbuild-debuginfo-1.5.4-2.fc4.rf.x86_64.rpm:2808767/usr/src/debug/ccbuild-1.5.4/src/  info  downloads[DIR]3  ccbuild-debuginfo-1.5.4-2.fc4.rf.x86_64.rpm/usr/src/debug/ccbuild-1.5.4/src/FileSystem/
pkg://ccbuild-debuginfo-1.5.4-2.fc5.rf.i386.rpm:2582947/usr/src/debug/ccbuild-1.5.4/src/  info  downloads[DIR]3  ccbuild-debuginfo-1.5.4-2.fc5.rf.i386.rpm/usr/src/debug/ccbuild-1.5.4/src/FileSystem/
pkg://ccbuild-debuginfo-1.5.4-2.fc5.rf.x86_64.rpm:2610993/usr/src/debug/ccbuild-1.5.4/src/  info  downloads[DIR]3  ccbuild-debuginfo-1.5.4-2.fc5.rf.x86_64.rpm/usr/src/debug/ccbuild-1.5.4/src/FileSystem/
pkg://ccbuild-debuginfo-1.5.4-2.fc6.rf.i386.rpm:2560575/usr/src/debug/ccbuild-1.5.4/src/  info  downloads[DIR]3  ccbuild-debuginfo-1.5.4-2.fc6.rf.i386.rpm/usr/src/debug/ccbuild-1.5.4/src/FileSystem/
pkg://ccbuild-debuginfo-1.5.4-2.fc6.rf.x86_64.rpm:2590290/usr/src/debug/ccbuild-1.5.4/src/  info  downloads[DIR]3  ccbuild-debuginfo-1.5.4-2.fc6.rf.x86_64.rpm/usr/src/debug/ccbuild-1.5.4/src/FileSystem/
pkg://ccbuild-debuginfo-1.5.4-2.fc7.rf.i386.rpm:2557743/usr/src/debug/ccbuild-1.5.4/src/  info  downloads[DIR]3  ccbuild-debuginfo-1.5.4-2.fc7.rf.i386.rpm/usr/src/debug/ccbuild-1.5.4/src/FileSystem/
pkg://ccbuild-debuginfo-1.5.4-2.fc7.rf.x86_64.rpm:2590922/usr/src/debug/ccbuild-1.5.4/src/  info  downloads[DIR]3  ccbuild-debuginfo-1.5.4-2.fc7.rf.x86_64.rpm/usr/src/debug/ccbuild-1.5.4/src/FileSystem/
pkg://ccbuild-debuginfo-1.5.4-2.fc8.rf.i386.rpm:2559602/usr/src/debug/ccbuild-1.5.4/src/  info  downloads[DIR]3  ccbuild-debuginfo-1.5.4-2.fc8.rf.i386.rpm/usr/src/debug/ccbuild-1.5.4/src/FileSystem/
pkg://ccbuild-debuginfo-1.5.4-2.fc8.rf.x86_64.rpm:2594170/usr/src/debug/ccbuild-1.5.4/src/  info  downloads[DIR]3  ccbuild-debuginfo-1.5.4-2.fc8.rf.x86_64.rpm/usr/src/debug/ccbuild-1.5.4/src/FileSystem/
pkg://ccbuild_1.5.5-0ubuntu1_amd64.deb:147840/usr/src/debug/ccbuild-1.5.4/src/  info  downloads[DIR]3  ccbuild_1.5.5-0ubuntu1_amd64.deb/usr/src/debug/ccbuild-1.5.4/src/FileSystem/
pkg://ccbuild_1.5.6-0ubuntu1_amd64.deb:143572/ccbuild-1.5.5/src/  info  downloads[DIR]3  ccbuild_1.5.6-0ubuntu1_amd64.deb/ccbuild-1.5.5/src/FileSystem/
pkg://ccc_6.2.9.506-4.tar.gz:6626/ccbuild-1.5.6/src/  downloads[DIR]3  ccc_6.2.9.506-4.tar.gz/ccbuild-1.5.6/src/FileSystem/
pkg://ogre-linux_osx-v1-0-1.tar.bz2:19755866/ogrenew/PlugIns/  downloads[DIR]3  ogre-linux_osx-v1-0-1.tar.bz2/ogrenew/PlugIns/FileSystem/
pkg://ogre3d-1.0.6.tbz:3894681/ogrenew/PlugIns/  downloads[DIR]3  ogre3d-1.0.6.tbz/ogrenew/PlugIns/FileSystem/
pkg://sather-cvs-latest.tar.gz:8321433/Sather-Contrib/  downloads[DIR]3  sather-cvs-latest.tar.gz/Sather-Contrib/FileSystem/
[DIR]  ftp://ftp.nsysu.edu.tw/Linux/FileSystem/
[DIR]  ftp://ftp.csti.ru/soft/Shells/TCMD6/Total Commander 6.0/Plugins/FileSystem/
[DIR]  ftp://ftp.informatimago.com/pub/mirrors/developer.apple.com/documentation/Performance/Conceptual/FileSystem/
[DIR]  ftp://ftp.informatimago.com/pub/mirrors/developer.apple.com/documentation/MacOSX/Conceptual/SystemOverview/FileSystem/