olemus
vaikevalikuks seatud kest, näiteks Bash
=
the shell that is set as the default option, e.g. Bash

ülevaateid
https://koenwoortman.com/linux-what-is-my-default-shell/

https://www.freebsd.org/doc/en_US.ISO8859-1/articles/linux-users/shells.html

https://www.peachpit.com/articles/article.aspx?p=659655&seqNum=3

vt ka
- Bash