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Operating Systems OS X (Apple) MacOS 10.15 (Catalina) switches from bash to zsh Post 303040250 by Corona688 on Friday 25th of October 2019 11:32:34 AM
Old 10-25-2019
zsh is a really odd choice. It's a hodgepodge of features from bourne and csh, with its own special extensions. It's not comparable and not compatible.

I don't know why they needed a shell to be app-store compatible, but it probably isn't good. Perhaps they're ripping OSX apart and moving bits to the app store. It mMakes sense from a business point of view -- a good way to force everyone who's avoided the app store to use it. It makes sense from a software point of view -- why have two installer/updater systems?
 

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VTYSH(1)							   Version 0.88 							  VTYSH(1)

NAME
vtysh - a integrated shell for Zebra routing software SYNOPSIS
vtysh [ -e command ] DESCBGPTION
vtysh is a integrated shell for Zebra routing engine. OPTIONS
-e Specify command to be executed under batch mode. COMMANDS
Almost Zebra commands. ping traceroute telnnet start-shell start-shell bash start-shell zsh FILES
/usr/local/etc/Zebra.conf The default location of the vtysh config file. WARNING
This man page is intended as a quick reference for command line options, and for config file commands. The definitive document is the Info file Zebra. SEE ALSO
References to other related man pages: bgpd(8), ripd(8), ripngd(8), ospfd(8), ospf6d(8), zebra(8) BUGS
vtysh eats bugs for breakfast. If you have food for the maintainers try <bug-zebra@gnu.org> AUTHOR
[S] See <www.zebra.org>, or the Info file for an accurate list of authors. Zebra Beast - VTY shell July 2000 VTYSH(1)
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