Joerg Pernfuss wrote:

/bin/sh is actually an ash. Minimal POSIX sh with a few additions that
don't help it anyway near a friendly shell for interactive use.
With "set -o emacs" or "set -o vi", and the existence of job control, sh is a perfectly adequate *root* shell, IMHO - though I'm a csh person myself.

If you do a lot of maintenance in multi-user mode then you can set yourself up another id 0 account with a different name, and use any shell you like, and even make it's home directory somewhere other that /root. If you have multiple individuals needing superuser accounts each can have their own separate superuser account, personal setup preferences etc. and you get a limited amount of accountability, too.


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