# jail /jail/mail mail.domain.net 192.168.1.11 /bin/sh
jail: execv: /bin/sh: Permission denied

# stat -x /jail/mail/bin/sh
  File: "/jail/mail/bin/sh"
  Size: 1536         FileType: Directory
  Mode: (0755/drwxr-xr-x)         Uid: (    0/    root)  Gid: (    0/   wheel)
Device: 255,134217732   Inode: 103438    Links: 4
Access: Wed Apr  4 15:31:23 2007
Modify: Tue Apr  3 16:22:24 2007
Change: Wed Apr  4 15:31:53 2007

# mount
/dev/ad0s1a on / (ufs, local)
devfs on /dev (devfs, local)
/dev/ad0s1d on /home (ufs, local, soft-updates)
/dev/ad0s2d on /jail/apache (ufs, local, soft-updates)
/dev/ad0s2f on /jail/bind (ufs, local, soft-updates)
/dev/ad0s2e on /jail/mail (ufs, local, soft-updates)
/dev/ad0s2g on /jail/shell (ufs, local, soft-updates)
/dev/ad0s1g on /tmp (ufs, local, soft-updates)
/dev/ad0s1e on /usr (ufs, local, soft-updates)
/dev/ad0s1f on /var (ufs, local, soft-updates)
devfs on /jail/mail/dev (devfs, local)
devfs on /jail/mail/devfs (devfs, local)
/usr/ports on /jail/mail (nullfs, local)
/usr/src on /jail/mail (nullfs, local)

# ls -lho
total 74
-rw-r--r--  1 root  wheel  -  570B Mar  2  2005 Makefile
-rw-r--r--  1 root  wheel  -  189B Dec 21  2004 Makefile.inc
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:19 cat
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:19 chflags
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:19 chio
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:19 chmod
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:19 cp
drwxr-xr-x  3 root  wheel  -  512B Apr  3 16:21 csh
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:21 date
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 dd
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 df
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 domainname
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 echo
drwxr-xr-x  3 root  wheel  -  512B Apr  3 16:22 ed
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 expr
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 getfacl
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 hostname
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 kenv
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 kill
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 ln
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 ls
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 mkdir
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 mv
drwxr-xr-x  2 root  wheel  -  1.0K Apr  3 16:22 pax
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 ps
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 pwd
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 rcp
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 realpath
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 rm
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 rmail
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 rmdir
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 setfacl
drwxr-xr-x  4 root  wheel  -  1.5K Apr  3 16:22 sh
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 sleep
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 stty
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 sync
drwxr-xr-x  2 root  wheel  -  512B Apr  3 16:22 test

# jls
# 

# pwd
/jail/mail/bin/sh
# ls
Makefile        builtins.def    exec.h          jobs.c          miscbltin.c     mystring.h      parser.h        trap.h
TOUR            cd.c            expand.c        jobs.h          mkbuiltins      nodes.c.pat     redir.c         var.c
alias.c         cd.h            expand.h        mail.c          mkinit.c        nodetypes       redir.h         var.h
alias.h         error.c         funcs           mail.h          mknodes.c       options.c       sh.1
arith.h         error.h         histedit.c      main.c          mksyntax.c      options.h       shell.h
arith.y         eval.c          init.h          main.h          mktokens        output.c        show.c
arith_lex.l     eval.h          input.c         memalloc.c      myhistedit.h    output.h        show.h
bltin           exec.c          input.h         memalloc.h      mystring.c      parser.c        trap.c