Editing Tcsh (section)

==Deployment==
Early versions of Mac OS X shipped with tcsh as the default shell, but the default for new accounts became [[Bash (Unix shell)|bash]] as of [[Mac OS X Panther|10.3]], then [[Z shell|zsh]] as of [[macOS Catalina|10.15]]. (tcsh is still provided, and upgrading the OS does not change the shell of any existing accounts). tcsh was the default root shell of [[FreeBSD]] prior to 14.0 (the current shell and default user shell in older versions, is [[POSIX]]-based)<ref name="UrbanTiemann2002">{{cite book|author1=Michael Urban|author2=Brian Tiemann|title=Sams teach yourself FreeBSD in 24 hours|url=https://books.google.com/books?id=LyDP5b2xzaMC&pg=PA56|year=2002|publisher=Sams Publishing|isbn=978-0-672-32424-6|page=56}}</ref><ref>[http://pubs.opengroup.org/onlinepubs/9699919799/xrat/V4_xcu_chap02.html POSIX 2008 Shell Command Language] "The System V shell was selected as the starting point for the Shell and Utilities volume of POSIX.1-2008. The BSD C shell was excluded from consideration"</ref><ref>{{Cite web |title=FreeBSD Quickstart Guide for Linux Users |url=https://docs.freebsd.org/en/articles/linux-users/ |access-date=2024-02-04 |website=FreeBSD Documentation Portal |language=en}}</ref> and its descendants like [[DragonFly BSD]] and [[DesktopBSD]].