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Full Discussion: problem about '..' in bash
Top Forums Shell Programming and Scripting problem about '..' in bash Post 302286381 by usfish on Wednesday 11th of February 2009 01:35:41 AM
Old 02-11-2009
Quote:
Originally Posted by cfajohnson

"cd ../$USER" will not place you in your home directory unless you are in a directory on the same level as your home directory.

You may be thinking of:

Code:
cd ~user

That will not work with a variable unless you use eval:

Code:
eval "cd ~$USER"

To go to your home directory, use cd with no directory.
Hi, thank you for your prompt response. I missed that condition. It is from the home directory and you type "..", and they meant to ask about ".." instead of $USER I guess.

I think there might be chance that bash fails on symbolic link?
 

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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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