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Top Forums UNIX for Dummies Questions & Answers how do U restrict a user to a single directory? Post 302227709 by redoubtable on Thursday 21st of August 2008 08:00:57 PM
Old 08-21-2008
I'm not familiar with the type of obscure trick you're implying.

However, I could give you some advise on how to do something similar. Bash has a mode in which users shall not exit their home dir (RESTRICTED MODE). This mode can be activated by calling bash with another name (rbash -- which is simply a symlink to bash) or doing bash -r . Although this restrictions work fine under normal usage, they are only a barrier to dummy users because any programmer could bypass them all.

Alternatively you could try more reliable methods such as virtualization (f.e. xen).
 

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lusermod(8)						      System Manager's Manual						       lusermod(8)

NAME
lusermod - Modify an user SYNOPSIS
lusermod [OPTION]... user DESCRIPTION
Modifies the user with name user. OPTIONS
-c, --gecos=gecos Set user's GECOS field to gecos. The GECOS field is traditionally used to store user's real name and other information. -d, --directory=directory Set user's home directory to directory. -g, --gid=gid Change user's primary group ID to gid. If group with ID gid does not exist, a warning is printed, but the operation is performed anyway. -i, --interactive Ask all questions when connecting to the user database, even if default answers are set up in libuser configuration. -L, --lock Lock user's account. This prevents logging in using user's password. -l, --login=name Rename user to name. -m, --movedirectory After changing user's home directory (using the -d option), move the old home directory to the new location. -P, --plainpassword=password Set user's password to password. Note that the password can be viewed while running lusermod using tools such as ps(1). -p, --password=encrypted Set user's password to the password represented by the hash encrypted. Note that the hash can be viewed while running lusermod using tools such as ps(1). -s, --shell=shell Set user's login shell to shell. -U, --unlock Unlock user's account. -u, --uid=uid Change user's user ID to uid. EXIT STATUS
The exit status is 0 on success, nonzero on error. libuser Feb 27 2008 lusermod(8)
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