To do as you wish, you could use chroot in the /etc/password file in the last field (where the shell is). For example, to make the user have a root of /home/misha, then you would change the final field in /etc/password to be something like:
In most implementations (and the GNU version) the shell does not have do be specified because without an argument the default shell is the command.
As PxT suggests, chroot is the approach. However, building a chroot environment can be tricky because commands that a user would normally have access to are not available unless explicitly under the new chroot directory. In other words, you must build a new environment under the new pseudo root file system and provide all commands.
This could be difficult for newbies, but it can be done I suggest reading the chroot manpage and supporting documents carefully.
hey guys im rly new to unix. im attempting to list the 5 largest files in a directory.
so i got this far...
ls -lR | sort -r
and this lists all files by filesize, how can i limit this to only the 5 largest? (4 Replies)
I have tried limiting failed logins to three by the following method
logins -ox \ | awk -F: '($8 != "LK" && $1 != "root") { print $1 }' \ | while read logname; do
/usr/lbin/modprpw -m umaxlntr=3 "$logname"
done
/usr/lbin/modprdef -m umaxlntr=3
but it is failing on the 4th... any ideas?... (1 Reply)
if my user has to enter the name of months to carry out a search how can I limit the input values to only the month names and nothing else?
so far my input criteria for the user is this:
i would like it so the user can only enter the months in the way i have stated. otherwise they would... (11 Replies)
Hi,
I have searched the web and have come back with nothing that is satisfactory for what I require. SFTP is my corporations new file transfer standard. What I require is a method to lock down SFTP users to their directory (they may go to sub directories) while not restricting regular users. ... (2 Replies)
Hello,
Using a Solaris SunOS 5.10, is there anyway to limit the number of processors utilised by an external vendor application over the server, from the unix OS perspective? (1 Reply)
Hi there,
I have a Debian 5.0 server that my company uses for deployment testing. This server needs to be accessed by NOC people that have no NIX knowledge whatsoever.
I am creating a bash script for a menu-based command interface for the commands they need to run on their testing routines,... (21 Replies)
I'm looking for a way to limit connections to a Solaris 10 box from any single IP.
The problem is that I've had more experience doing this with IPTables on Linux, rather than with IPFilter, which I've found to be somewhat feature-poor.
I hope there is some way to do this using IPFilter, I've... (2 Replies)
Hi,
I have a Debian 6 machine running Postfix 2.7.1. The email server works pretty well. I discovered that any non-root user can access to the mail queue using postqueue command just like root. How can I limit this access? (1 Reply)
Greetings.
I have script to monitor the disk space of folder it runs every 17 min with help of cron. It sends email when disk size reaches to 85 %. Now the issue is that it continousely generates email until we clear some space in that folder. Is it possible to restrict the Script to send only... (14 Replies)
Discussion started by: manju98458
14 Replies
LEARN ABOUT CENTOS
sulogin
SULOGIN(8) System Administration SULOGIN(8)NAME
sulogin - Single-user login
SYNOPSIS
sulogin [options] [tty]
DESCRIPTION
sulogin is invoked by init when the system goes into single user mode.
The user is prompted:
Give root password for system maintenance
(or type Control-D for normal startup):
sulogin will be connected to the current terminal, or to the optional tty device that can be specified on the command line (typically
/dev/console).
After the user exits the single-user shell or presses control-D at the prompt, the system will continue to boot.
OPTIONS -e, --force
If the default method of obtaining the root password via getpwnam(3) from the system fails, manually examine /etc/passwd and
/etc/shadow to get the password. If they are damaged or nonexistent, sulogin will start a root shell without asking for a password.
Only use the -e option if you are sure the console is physically protected against unauthorized access.
-p, --login-shell
Specifying this option causes sulogin to start the shell process as a login shell.
-t, --timeout seconds
Specify the maximum amount of time to wait for user input. By default, sulogin will wait forever.
-h, --help
Print a help message.
-V, --version
Output version.
ENVIRONMENT VARIABLES
sulogin looks for the environment variable SUSHELL or sushell to determine what shell to start. If the environment variable is not set, it
will try to execute root's shell from /etc/passwd. If that fails it will fall back to /bin/sh.
AUTHOR
sulogin was written by Miquel van Smoorenburg for sysvinit and later ported to util-linux by Dave Reisner and Karel Zak.
AVAILABILITY
The sulogin command is part of the util-linux package and is available from Linux Kernel Archive <ftp://ftp.kernel.org/pub/linux/utils
/util-linux/>.
util-linux Jul 2012 SULOGIN(8)