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Full Discussion: root dir ? home dir ?
Top Forums UNIX for Dummies Questions & Answers root dir ? home dir ? Post 302106153 by Perderabo on Tuesday 6th of February 2007 11:08:58 PM
Old 02-07-2007
The root directory is /
Home directory is assigned to you when your account is added. It might be something like /home/hinman /export/home/hinman or something like that. Each user gets a home directory.

/export/home/hinman has a parent called /export/home
/export/home has a parent called /export
/export has a parent called /
/ does not really have a parent, but it acts as it's own parent.

With many shells you can use ~ as a shortcut for /export/home/hinman but if I use ~ it would be /export/home/perderabo (or whatever our home directories really are). We both can use ~joe to refer to joe's home directory.

Every directory must have two special entries called . and ..
. is the current directory
.. is the parent directory

So if you are in /usr/local/bin, . is /usr/local/bin and .. is /usr/local. Unlike ~ these really are in the directory and will work with any shell.
 

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LEARN ABOUT FREEBSD

pam_chroot

PAM_CHROOT(8)						    BSD System Manager's Manual 					     PAM_CHROOT(8)

NAME

     pam_chroot -- Chroot PAM module

SYNOPSIS

     [service-name] module-type control-flag pam_chroot [arguments]

DESCRIPTION

     The chroot service module for PAM chroots users into either a predetermined directory or one derived from their home directory.  If a user's
     home directory as specified in the passwd structure returned by getpwnam(3) contains the string ``/./'', the portion of the directory name to
     the left of that string is used as the chroot directory, and the portion to the right will be the current working directory inside the chroot
     tree.  Otherwise, the directories specified by the dir and cwd options (see below) are used.

     also_root	Do not hold user ID 0 exempt from the chroot requirement.

     always	Report a failure if a chroot directory could not be derived from the user's home directory, and the dir option was not specified.

     cwd=directory
		Specify the directory to chdir(2) into after a successful chroot(2) call.

     dir=directory
		Specify the chroot directory to use if one could not be derived from the user's home directory.

SEE ALSO

     pam.conf(5), pam(8)

AUTHORS

     The pam_chroot module and this manual page were developed for the FreeBSD Project by ThinkSec AS and NAI Labs, the Security Research Division
     of Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 (``CBOSS''), as part of the DARPA CHATS research program.

BSD
								 February 10, 2003							       BSD
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