chroot is a command on UNIX-like systems which runs a process under a different root directory.

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Chroot into Arch Bootable USB

I have a bootable USB drive with Arch Linux recently installed on it (Linux kernel 3.19.2). I want to plug it in to my computer and chroot into it (or possibly run it inside a container, using ...
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ubuntu on chroot apt-get update fail - Unable to parse package

When I chroot under Ubuntu 12.04 and run apt-get update in my chroot home, I get: 100% [21 Translation-en gzip 0 B] [22 Translation-en bzip2 3E: Unable to parse package file ...
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home folder empty after schroot remove

I was trying to backup and refresh my root server. (Update everything, delete unused files etc.) I uninstalled schroot because i thought i don't use it anyway. Afterwards i started the backup ...
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2answers
295 views

OpenBSD 'device not configured' error in chroot-ed environment

I have asked this question on StackOverflow but given the comment there it seems like it fits here better. This is almost certainly a system configuration issue—you didn't set up the jail ...
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SFTP ChRoot result in broken pipe

I have a website that I want to add some restricted access to a sub-folder. For this, I've decided to use CHROOT with SFTP (I mostly followed this link : ...
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30 views

SSH remote chroot without root

I have a dual boot system consisting of two Debian OSes. I've installed one of them in a root of the partition and installed the other Debian using debootstrap; the installation partition is called ...
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12 views

“Cannot open audit interface” upgrading libuuid1 — is selinux confused?

I have a Debian chroot on a Linux system running an alternative Linux distro. It's always worked fine in the past but in the past few months I've found myself unable to upgrade libuuid1. Instead it ...
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5k views

Start a systemd service inside chroot

With init scripts (or with openrc) I alway could run services from a different installation root. but when I run chroot /somepath/to_root /usr/bin/systemctl start someservice I got: Running in ...
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15 views

Use a dynamic mount path with a symlink

I need to have a chrooted user access a folder outside of its chroot. So I use a bind mount for this and it works fine. The mount points to a symlink folder and this symlink changes automatically ...
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773 views

Keeping users inside their home directory

I have a fresh install of CentOS and I'm currently setting up users. Their home directories reside within /home/username/ and I want to make it so that they cannot ls or cd outside that area when ...
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27 views

Starting a chroot and drop into nonprivileged user home

I need to (temporarily) jail a non-privileged user. I tried something like: sudo chroot --userspec=mcon:users /wherever/chroottarget /bin/bash -i This almost works, but it doesn't set env vars ...
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60 views

Set up sftp mysql authentication with chroot

How do I set up an openssh SFTP server that authenticates against a MySQL table where the users are jailed? Each user will need to have its own jail: /home/sftp/john /home/sftp/jane etc.. However ...
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395 views

Run valgrind inside a chroot environment on Debian?

Is it possible to use valgrind within a chroot environment on Debian? It seems to need to access the proc filesystem, which is unsurprisingly inaccessible. root@tree:/# valgrind valgrind: warning ...
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What's the proper way to prepare chroot to recover a broken Linux installation?

This question relates to questions that are asked often. The procedure is frequently mentioned or linked to offsite, but is not often clearly and correctly stated. In an objective to concentrate ...
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2answers
609 views

Chroot ssh user to home folder results in Connection refused

I'm trying to give someone ssh access to a (Ubuntu 14.04) server I've got, but I want to limit them to their own home folder. So I'm trying to follow this tutorial. I first created a user (sudo ...
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1answer
431 views

Mounting /dev/shm in a Gentoo chroot on Xubuntu 14.04

I'm trying to install Gentoo, and instead of using one of the bootable minimal install CDs provided by Gentoo, I'm using a chroot in Ubuntu. I'm mainly following the instructions outlined here, ...
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38 views

Howto write in chroot on Secure FTP(sftp)

As I understood, directory for chroot must have permission 755, and must be owned by root. But 755 mean that only owner(root) have acces for write to this folder. But what if I have user web, with ...
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32 views

How to hide subdirectories within chrooted directory from users who don't have access

Apologies if this problem has been answered before / elsewhere. I've had a hunt around but am unable to find anything. If so please point me in the right direction. I'm running a linux ftp server ...
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2answers
2k views

Booting linux system from chroot: is there a better way to do this?

I want to set up Grub menu entry to boot into chrooted system (installed chrooted debootstrap to avoid touching existing system too much). Currently I do the following to attain it: Install ...
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1answer
633 views

limits.conf ulimits not being applied to chrooted processes

We allow users to execute scripts on our servers. Our security model involves chrooting them. We want to be able to apply ulimit restrictions to them, and the best way to do it would seem to be in ...
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165 views

schroot Don't Share Home Directory

I created a schroot recently (following the directions here), and it conveniently shares my (host) user home directory. That is, /home/username is the same in the chroot as outside the chroot. Where ...
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30 views

mount a specific dev device under chroot

I want to use a specific disk under chroot. I know this command: mount -o bind /dev /mnt/chroot/dev This command populates all devices under chroot. But I want to use only few devices under ...
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61 views

Is password-less access to SSH using chroot setup possible?

I was able to log in into a ssh server using public and private keys without using a password. I was able to also setup chroot and jail a new user and avoid that the user could connect via ssh but ...
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OS under chroot retaining /boot from host OS

The system is Fedora 20. At to bottom of the posting is a list of the script to mount the chroot object directories. Below is a df list from the top level OS before chroot command. After the chroot ...
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122 views

Have Arch Linux, want slack, must keep both; no cd, no usb or money; can chroot, pre-partitioned: GPT

I have a laptop with Arch Linux on it [averagejoey2000@JoeyHobbyPCarchLinux arch-install-scripts]$ lsblk -l NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 596.2G 0 disk sda1 8:1 0 ...
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696 views

Chroot from Debian livecd

I'm trying to repair LILO on a Debian server. I'm trying to chroot, with chroot /mnt/boot /etc/csh and I get: chroot: cannot run command '/etc/csh': Permission denied How can I perform a chroot?
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21 views

Package downgrade from live environment

I run arch Linux on an hp laptop. I installed a graphical login manager (gdm) and during boot, the kernel unpacks, systemd starts, but when it attempts to start my login manager "An error has ...
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1answer
65 views

How to distinguish 'syscalls' form 'int 80h' when using ptrace

As far as I know, ptrace can only get syscall number by PTRACE_SYSCALL, but syscall number is different in x86 and x64. So is there any way to figure out where this syscall real origin? I am now ...
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75 views

Passwordless linux account converted to Chroot jailed sftp now requires password?

I created a user and did an RSA key exchange for a passwordless connection. This worked. I also created a chroot jailed sftp only user. This also worked. I then created a third user. I set up the ...
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35 views

How to get out of a chrooted environment in ArchLinux

I'm attempting to install ArchLinux via SSH. At the moment I'm not at the machine, but I do have root access to it. I have SSH setup in the Chroot environment (arch-chroot). Is there anyway, while ...
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Is there a way to use ACL to deny access to folders by user, preferrably by making them invisible?

Is there a way to use Linux's Access Control Lists feature to deny access to folders by user, preferrably by making them invisible? This is needed for a chroot SFTP environment where we want to block ...
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GRUB Booting from subdir Issue

I am encountering a boot issue: My primary linux distro was not installed on / but (I don't know why the developers chose it) on /@/ which implies that my rootfs lies under /@. However when I ...
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6k views

chrooted sftp user with write permissions to /var/www

I am getting confused about this setup that I am trying to deploy. I hope someone of you folks can lend me a hand: much much appreciated. Background info Server is Debian 6.0, ext3, with ...
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mount dev, proc, sys in a chroot environment?

I'm trying to create a Linux image with custom picked packages.What I'm trying to do is to hand craft the packages I'm going to use on an XO laptop, because compiling packages takes really long time ...
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2k views

How to start Xorg-server inside plain chroot?

when I runchroot /somepath /usr/bin/startxI got something what looks like an evdev problem... (I correctly --bind mounted /dev/ /dev/pts /dev/shm /proc /sys /tmp ) The screen is displayed and ...
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chrooting ngIRCd on Debian

I am wanting to set up an IRC server on a Linode instance. I'm a bit nervous about the IRCd being a possible attack vector on the system. So in addition to using a non-standard connection port, I want ...
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1k views

How do I use the terminal SCREEN when chrooted?

How do I allow a user to use SCREEN on a chrooted user? I have tried everything but I keep on failing. I need the user to be able to use SCREEN when they are logged in bash as a chrooted user.
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Can I chroot to a linux environment from windows

I want to know if it is somehow possible to chroot into a Linux system from Windows, or, is there some technique or hack to achieve that?
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191 views

Unity closes on Ubuntu Logout, but does not complete logout. (Crouton on Chromebook)

I've got a Chromebook 14 "dual-booting" Ubuntu 14.04 using Crouton with the stock Chrome OS. I've had it like this for a while with everything operating fine. As you know, Linux Distros are kind of ...
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If I create a jail for a process does that process need to be chrooted every time I start it?

I just installed Debian on my computer and I'm looking to run ownCloud in a chroot jail. I'm not exactly sure how to do this but from what I can tell I just copy the files needed to install and run ...
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1answer
38 views

Using my server to do computationally heavy tasks

I have a laptop I do most of my computing on but it's very lightweight and it takes ages to compile anything on, or do any heavy tasks. Something like installing an emacs plugin or a cabal package can ...
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56 views

How to chroot into memory disk so that hard disk can be unmounted?

What I want to achieve is to be able to backup my hard disk over ssh like the following without the need to boot from a live CD / rescue media: dd if=/dev/sda | gzip -1 - | ssh user@hostname dd ...
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76 views

Install windows on chroot of linux

How do I install Windows on chroot in Linux, if it is possible at all. I am confused about the meaning of chroot so any help would be appreciated.
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Chroot sftp jail seems to be insistent on not working

So I followed this guide to the letter: http://markshust.com/2013/04/01/how-setup-chrootd-sftp-account-linux and a few other guides as well, but I seem to be incapable of getting a connection. I am ...
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How to add pointers to filesystems outside the chrooted environment - using chrooted SFTP via OpenSSH

So, I'm pretty sure this is true, but I haven't found a specifically detailed independent reference that directly answers my question. Question being: How can I add access to a resource that is ...
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99 views

Is there any way to virtualize a Linux installation on another partition?

The basic idea is like this: run another Linux installation as if it was in VirturalBox or VM ware. With "chroot", I can do something similar. For example, I can mount the partition where Arch Linux ...
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554 views

rsync error: symlink has no referent

I am trying to configure rsnapshot (which uses rsync) to backup a Windows server but I am having trouble with rsync being unable to follow a symlink on the server to be backed up. Setup: Windows ...
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852 views

schroot build environment setup how to avoid bind-mount home

The recent linux distributions such as Fedora and Ubuntu all use chroot environment to make the build. Because when making the build often it needs to install some special tools, and to install to the ...
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2k views

chroot on OSX as a different OS

I was wondering if anyone has been able to use chroot on OSX to run another OS (ubuntu, centos). I know that they are very different, but almost everything I want to use this for wouldn't care about ...
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497 views

Install full version of Unity on Chrome OS using crouton

I have an Acer Chromebook. Using crouton, I installed Ubuntu (unity) on it. I am pretty familiar Ubuntu 12.04. But the installed one is very minimized package. My fonts are missing and I manually ...