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

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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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19 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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12 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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15 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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36 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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16 views

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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54 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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32 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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1answer
15 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
40 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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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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9 views

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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1answer
274 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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20 views

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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90 views

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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129 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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22 views

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
37 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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43 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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1answer
58 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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1answer
81 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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422 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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989 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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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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1answer
4k 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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1k 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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611 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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540 views

Logging rssh/chroot SFTP users

I'm trying to log activity (uploads, downloads, renames, deletes) for SFTP users. If I SFTP with a normal user, it logs to /var/log/secure. If I SFTP with a rssh user, it logs that they connected, but ...
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237 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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306 views

Directive 'ChrootDirectory' is not allowed with new OpenSSH

I am trying to set up chrooted SFTP access but OpenSSH is giving this error: /etc/ssh/sshd_config: line 94: Bad configuration option: ChrootDirectory /etc/ssh/sshd_config line 94: Directive ...
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523 views

chroot under Mac OS X

So I have googled a lot with different search terms, but didn't find anything usable, only that intead of ldd I have to use otool -L to see the used libraries of a programm. I tried to copy bash into ...
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442 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 ...
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245 views

How do I fix the WSOD in phpMyAdmin and Drupal in chrooted Apache?

When I attempt to run phpMyAdmin (both 3.5.5 and 4.0.4.2) or Drupal (7.22) in chrooted Apache (2.2.3), I get the WSOD (White Screen Of Death; a.k.a. a blank page). I have tried with both mod_chroot ...
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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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537 views

chroot SFTP user can't modify any files in mounted drive

Well, here are the steps I’ve done; the problem is listed at the bottom. sudo mkdir /home/test sudo useradd test sudo chown root:test /home/test sudo chmod 755 /home/test sudo groupadd testgroup sudo ...
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1answer
378 views

Chroot from android into environment as user

I'm trying to use my android tablet as a dev environment. So far I have created an Arch and Ubuntu img. I can chroot into both just fine and I have created a user using adduser, but I do not know how ...
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1answer
539 views

Use Qemu & chroot to reset password on mounted external disk

I have a NAS based on Linux, but the root password is kept secret by the manufacturer. Now to reset the password I am trying to mount the disk to my local linux computer. All of the files are present ...
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2answers
1k views

Create a tarball with a fake `root`

I'm working on something in a Makefile that will look something like this: tarball: mkdir -p tmp/tarball/etc/service mkdir -p tmp/tarball/usr/local mkdir -p ...
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1answer
165 views

How do I safely allow unprivileged users to copy files to my server?

I know that I can use rsync over ssh to send files from one Linux computer to another. However, in this case I need to give access to my system to users with a lower level of trust (people who may ...
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1answer
284 views

copied chroot jail directory cant be chrooted

I am developing a package so when users login through ssh they are forwarded to a chroot jail. The jail directory is created via makejail program on building process. But when the jail package copy ...
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1answer
66 views

file command output — linux version

Why two executables are showing different version for linux. When cross-compiled compiled under chroot enviroment. GNU/Linux 3.6.3, GNU/Linux 2.6.26, Hello world program output. ...
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1answer
661 views

yum --installroot should use /etc/yum.repos.d?

I have a chroot environment in a directory. I want to install some RPM packages using the repositories in that chroot environment instead of the host OS ones. yum --installroot= will look for ...
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171 views

How to transfer a USB bootable ubuntu system to a bootable DVD

I've built a USB bootable 1.5G system derived from Ubuntu core (along the lines of this example). It boots using syslinux on most of our Intel hardware. Intel iMacs are an exception (grub EFI with GPT ...
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statify executables in chroot

I am trying to run arbitrary executables in a chroot. Unfortunately I have different version of the shared library dependencies of some of the executables in the chroot. Is it possible to reroute the ...
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47 views

Chroot based on group name

I have a *nix system on which I want to get an SFTP chroot set up. Let's say there are three users, users from the same country can read and write the files from their compatriots, but should be ...
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2answers
2k views

Linux commands “id” and “whoami” dependencies (for chroot environment)

I have a new openssh (openssh-server-6.1p1-4.fc18.i686) chroot environment in Fedora Core 18 and puts users in a chroot directory structure with a (bash) shell. During troubleshooting SELinux has been ...
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209 views

Why `/proc` file system should be mounted when re-install GRUB from `chroot`?

Currently, the MBR on my machine is corrupted, so I decide to re-install GRUB from a liveCD and with chroot. From this tutorial, I can complete the re-installation. However, I'm not clear about the ...
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2k views

Arch Linux Install, Why is arch-chroot giving me an error?

I'm following the Arch Linux install instructions found here from a live cd, and I'm stuck issuing the following command: # arch-chroot /mnt mount: sys is already mounted or /mnt/sys busy sys ...