create a new ssh unser with webmin

hi … i want to ask about linux . perhaps no one knows the function of the following Linux command ? at the time wanted to make unser ssh with webmin , the shell column contained the following command

  1. / bin / sh
  2. / bin / csh
  3. / bin / false
  4. / bin / bash
  5. / usr / sbin / nologin
  6. / bin / sync
  7. / bin / dash
  8. / bin / rbash

what the function of each command it ? please help

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These are different possible shells (the shell provides the command line interface that you use when you are logged in). Some of these may not be installed on your system and others, like /usr/sbin/nologin are there to prevent a login at all. Generally you would want to select /bin/sh or /bin/bash which are installed by default in all OS options and will provide a familiar Linux CLI experience.