jk_uchroot command not found

Introduction

When you run more command in linux terminal / console, you get the following error message

jk_uchroot: command not found

or when using sudo you get the following error message

sudo: jk_uchroot: command not found

Solutions to jk_uchroot: command not found

How To Fix jk_uchroot: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu jk_uchroot is provided by jailkit package.

jailkit is:

Jailkit is a set of utilities to limit user accounts to specific files using chroot() and or specific commands. Setting up a chroot shell, a shell limited to some specific command or a daemon inside a chroot jail is a lot easier and can be automated using these utilities.

Jailkit is a specialized tool that is developed with a focus on security. It will abort in a secure way if the configuration, the system setup or the environment is not 100% secure, and it will send useful log messages that explain what is wrong to syslog.

Jailkit is known to be used in network security appliances from several leading IT security firms, Internet servers from several large enterprise organizations, Internet servers from Internet service providers, as well as many smaller companies and private users that need to secure login in services or in daemon processes.

Currently, Jailkit provide jails for cvs, git, scp sftp, ssh, rsync, procmail, openvpn, vnc, etc.

Jailkit make available the following commands: jk_check, jk_chrootlaunch, jk_chrootsh, jk_cp, jk_init, jk_jailuser, jk_list, jk_lsh, jk_socketd, jk_uchroot, jk_update.

To fix this problem, we can install more using the command below.

sudo apt-get -y install jailkit

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install jailkit.

sudo apt -y install jailkit

Or if you have aptitude installed you can use the following command.

sudo aptitude install jailkit

Summary

In this tutorial we learn how to fix jk_uchroot command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.