I am a Unix user and have been using zsh for more than 20 years.
I have been using zsh as my login shell for many years on macOS High Sierra.
I use only ~/.zprofile and for sharing what is relevant to be common,
with /bin/sh and /bin/bash it calls explicitely ~/.profile.
I don’t use any other shell initialization file outside of:
~/.zprofile
~/.profile
Recently I made the switch to Big Sur. And I discovered a problem which didn’t occur before and which doesn’t occur on any Unix I work on:
inside Terminal and xterm my ~/.zprofile is not correctly read.
Since I didn’t pass on Catalina ( too many problems ) I cannot verify if the problem started with Catalina or Big Sur.
If I load it explicitely:
. ~/.zprofile
it is read without any error. Most notably I see it at the setting
of PS1 which is the correct one I see on all other systems I am
working on.
I didn’t modify either /etc/zprofile or /etc/zshrc.
Here are my very basics shell initialization files:
#! /bin/zsh
. ${HOME}/.profile
PS1="### %B%T %m%b:%32<...<%/ %# "
export PS1
PS2="# "
export PS2
HISTFILE=~/.zsh_history
export HISTFILE
HISTSIZE=1024
export HISTSIZE
VISUAL=vi
export VISUAL
tty -s && stty -istrip
#!/bin/sh
CDPATH=.:~/Links
export CDPATH
PATH=/opt/local/bin:/opt/local/sbin:/bin:/usr/bin:/sbin:/usr/sbin:/opt/X11/bin:/opt/bin
export PATH
MANPATH=/opt/local/share/man:/usr/share/man:/opt/X11/share/man:/opt/man
export MANPATH
LANG=en_US.UTF-8
export LANG
BC_ENV_ARGS="${HOME}/.bcrc"
export BC_ENV_ARGS