Shell & Terminal

Shell & Terminal posts

Bash, Zsh, sh, tcsh, and the TUI tools built on top of them — prompts, scripting, multiplexers, and terminal troubleshooting.

Shell & TerminalDeep Dive July 10, 2026 2 min read

tcsh and csh: Why FreeBSD's Shell Heritage Isn't POSIX

FreeBSD's default shells didn't evolve from the Bourne shell lineage Bash and Zsh belong to — they descend from an entirely separate design philosophy, one built to feel more like C than like a scripting language.

#deep-dive#tcsh#csh