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I am looking for a limited shell access in Ubuntu 18.04+. Previously up to 16.04, the repos contain lshell, but I am not seeing it in 18.04 or 18.10. Are there any alternatives to lshell currently available in Ubuntu?

My requirement is to just allow a custom location with few binaries for a limited shell access.

My requirement is as follows: I have a set of scripts and binaries and i am going to pack them into /opt/custom location and the user should have access only to this location just to execute these binaries/scripts.

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    github.com/ghantoos/lshell download and do a python setup.py install --no-compile --install-scripts=/usr/bin/
    – Rinzwind
    Apr 2, 2019 at 10:53
  • Thanks @Rinzwind. I have seen it. But is there any security implication behind removing it from Ubuntu's default repo?
    – GuruPrasad
    Apr 2, 2019 at 11:06
  • Yes there might be security implications. Software developed for 16.04 mosttimes is not suited for 18.04. And as it was made in python: there is a transition in progress where py2 is removed in favor of py3. Maybe lshell does not have a py3 version and was therefor removed from the repo.
    – Rinzwind
    Apr 2, 2019 at 11:24
  • github issue for the port to py3: github.com/ghantoos/lshell/issues/191
    – dessert
    Apr 2, 2019 at 11:47
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    I don't know your tool, but in general: If there was a package, but isn't available anymore, take a look at packages.ubuntu.com -> packages.ubuntu.com/xenial/lshell ... on the right side below, there is a box 'similar packages'. Sometimes it is useful as start to test alternatives ... Also there is the launchpad link, sometimes with info, why the package isn't in the repo, anymore.
    – LupusE
    Apr 2, 2019 at 12:12

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You can try chroot with only limited set of commands.

chroot (change root) is an isolation facility towards a process from Linux kernel. chroot changes the root (/) filesystem for one process into another directory. People calls chroot as jail, an environment when a process works only inside and can't see outside. In practice, creating a chroot environment is likely copying a program and its dependencies inside a directory then performing chroot command. In other words, chroot is likely creating a little clone of whole original system inside a directory. In Linux, chroot needs root user. You will see it. I will tell how to do chroot for bash by example. This tutorial is applicable to another Linux distributions such as Linux Mint or Debian.

Reference

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