Twin directories of dirname:

[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-release-3-1/src/regress/usr.bin/dirname/
[DIR]  ftp://ftp.udc.es/mirror/freebsd/development/FreeBSD-CVS/src/usr.bin/dirname/
[DIR]  ftp://ftp.ticklers.org/pub/NetBSD/NetBSD-release-3-0/src/usr.bin/dirname/
[DIR]  ftp://ftp.ticklers.org/pub/NetBSD/NetBSD-release-3-0/src/regress/lib/libc/dirname/
[DIR]  ftp://ftp.ticklers.org/pub/NetBSD/NetBSD-current/src/usr.bin/dirname/
[DIR]  ftp://ftp.ticklers.org/pub/NetBSD/NetBSD-current/src/regress/usr.bin/dirname/
[DIR]  ftp://ftp.ticklers.org/pub/NetBSD/NetBSD-current/src/regress/lib/libc/dirname/
[DIR]  ftp://ftp.ticklers.org/pub/NetBSD/NetBSD-release-4-0/src/usr.bin/dirname/
[DIR]  ftp://ftp.ticklers.org/pub/NetBSD/NetBSD-release-4-0/src/regress/usr.bin/dirname/
[DIR]  ftp://ftp.ticklers.org/pub/NetBSD/NetBSD-release-4-0/src/regress/lib/libc/dirname/
[DIR]  ftp://ftp.ticklers.org/pub/NetBSD/NetBSD-release-3-1/src/usr.bin/dirname/
[DIR]  ftp://ftp.ticklers.org/pub/NetBSD/NetBSD-release-3-1/src/regress/lib/libc/dirname/
[DIR]  ftp://ftp.smr.ru/pub/0/FreeBSD/releases/i386/branches/4.0-stable/src/usr.bin/dirname/
[DIR]  ftp://ftp.smr.ru/pub/0/FreeBSD/releases/i386/branches/-current/src/usr.bin/dirname/
[DIR]  ftp://ftp.ticklers.org/pub/OpenBSD/src/usr.bin/dirname/
[DIR]  ftp://ftp.au.netbsd.org/pub/NetBSD/NetBSD-current/src/usr.bin/dirname/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/NetBSD-current/src/usr.bin/dirname/
[DIR]  ftp://ftp.esat.net/mirrors/.3/ftp.netbsd.org/pub/NetBSD/NetBSD-current/src/usr.bin/dirname/
[DIR]  ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-current/src/usr.bin/dirname/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-current/src/usr.bin/dirname/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/bsd/NetBSD/NetBSD-current/src/usr.bin/dirname/
[DIR]  ftp://ftp.pub.ro/pub/mirrors/netbsd.org/NetBSD-current/src/usr.bin/dirname/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-current/src/usr.bin/dirname/
[DIR]  ftp://ftp.lug.udel.edu/pub/netbsd/NetBSD-current/src/usr.bin/dirname/
[DIR]  ftp://ftp.jp.xemacs.org/pub/NetBSD/NetBSD-release-3-1/src/usr.bin/dirname/
[DIR]  ftp://ftp.jp.xemacs.org/pub/NetBSD/NetBSD-release-3-1/src/regress/lib/libc/dirname/
[DIR]  ftp://ftp.nrc.ca/pub/systems/bsd/netbsd/NetBSD-current/src/usr.bin/dirname/
[DIR]  ftp://ftp.nrc.ca/pub/systems/bsd/netbsd/NetBSD-current/src/regress/usr.bin/dirname/
[DIR]  ftp://ftp.nrc.ca/pub/systems/bsd/netbsd/NetBSD-current/src/regress/lib/libc/dirname/
[DIR]  ftp://core.ring.gr.jp/pub/NetBSD/NetBSD-release-3-1/src/usr.bin/dirname/
[DIR]  ftp://core.ring.gr.jp/pub/NetBSD/NetBSD-release-3-1/src/regress/lib/libc/dirname/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/NetBSD-release-3-1/src/usr.bin/dirname/
[DIR]  ftp://ftp.esat.net/mirrors/.3/ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-1/src/usr.bin/dirname/
[DIR]  ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-1/src/usr.bin/dirname/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-release-3-1/src/usr.bin/dirname/
[DIR]  ftp://ftp.pub.ro/pub/mirrors/netbsd.org/NetBSD-release-3-1/src/usr.bin/dirname/
[DIR]  ftp://ftp.pub.ro/pub/pub/mirrors/netbsd.org/NetBSD-release-3-1/src/usr.bin/dirname/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-release-3-1/src/usr.bin/dirname/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/NetBSD-release-3-1/src/regress/lib/libc/dirname/
[DIR]  ftp://ftp.esat.net/mirrors/.3/ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-1/src/regress/lib/libc/dirname/
[DIR]  ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-1/src/regress/lib/libc/dirname/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-release-3-1/src/regress/lib/libc/dirname/
[DIR]  ftp://ftp5.freebsd.org/pub/NetBSD/NetBSD-release-3-1/src/regress/lib/libc/dirname/
[DIR]  ftp://ftp.pub.ro/pub/mirrors/netbsd.org/NetBSD-release-3-1/src/regress/lib/libc/dirname/
[DIR]  ftp://ftp.pub.ro/pub/pub/mirrors/netbsd.org/NetBSD-release-3-1/src/regress/lib/libc/dirname/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/NetBSD-release-3-1/src/regress/lib/libc/dirname/
[DIR]  ftp://ftp.lug.udel.edu/pub/netbsd/NetBSD-release-3-1/src/usr.bin/dirname/
[DIR]  ftp://ftp.lug.udel.edu/pub/netbsd/NetBSD-release-3-1/src/regress/lib/libc/dirname/
[DIR]  ftp://ftp.kr.freebsd.org/pub/FreeBSD/development/FreeBSD-CVS/src/usr.bin/dirname/
[DIR]  ftp://ftp.fr.netbsd.org/pub/NetBSD-CVS/src/regress/lib/libc/dirname/