Is there a way to list all configurable `alternatives` (symlinks for similar commands) on the system?

uvsmtid asked:

The alternatives command (package chkconfig) on RHEL manages symlinks which link a generic name to one of the alternative implementations. For example, mta group of symlinks can be provided by Sendmail and Postfix (to implement i.e. sendmail command):

alternatives --display mta

While I can --display a group of symlinks, I need to guess its name first (i.e. mta).

Can I simply list all possible configurable symlink groups (like mta) to pick from?

The reason is that I forget some group names occasionally.

My answer:

The simplest answer would be…

ls /etc/alternatives

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