zsh-5.9.2

Config Files

There are a whole host of configuration files for zsh including /etc/zsh/zshenv, /etc/zsh/zprofile, /etc/zsh/zshrc, /etc/zsh/zlogin and /etc/zsh/zlogout. You can find more information on these in the zsh(1) and related manual pages.

Create a basic /etc/zsh/zprofile file. Like /etc/profile provided in The Bash Shell Startup Files, it sets up some helper functions and some basic parameters, then loads the scripts in /etc/profile.d:

install -vdm755 /etc/zsh &&
cat > /etc/zsh/zprofile << "EOF"
# Begin /etc/zsh/zprofile
# Written for Beyond Linux From Scratch

# System wide environment variables and startup programs.

# Functions to help us manage paths.  Second argument is the name of the
# path variable to be modified (default: PATH)
pathremove () {
        local IFS=':'
        local NEWPATH
        local DIR
        local PATHVARIABLE=${2:-PATH}
        for DIR in ${(P)=PATHVARIABLE} ; do
                if [ "$DIR" != "$1" ] ; then
                  NEWPATH=${NEWPATH:+$NEWPATH:}$DIR
                fi
        done
        export $PATHVARIABLE="$NEWPATH"
}

pathprepend () {
        pathremove $1 $2
        local PATHVARIABLE=${2:-PATH}
        export $PATHVARIABLE="$1${(P)PATHVARIABLE:+:${(P)PATHVARIABLE}}"
}

pathappend () {
        pathremove $1 $2
        local PATHVARIABLE=${2:-PATH}
        export $PATHVARIABLE="${(P)PATHVARIABLE:+${(P)PATHVARIABLE}:}$1"
}

# Set the initial path
export PATH=/usr/bin

# Attempt to provide backward compatibility with LFS earlier than 11
if [ ! -L /bin ]; then
        pathappend /bin
fi

if [ $EUID -eq 0 ] ; then
        pathappend /usr/sbin
        if [ ! -L /sbin ]; then
                pathappend /sbin
        fi
        unset HISTFILE
fi

# Set some defaults for graphical systems
export XDG_DATA_DIRS=${XDG_DATA_DIRS:-/usr/share}
export XDG_CONFIG_DIRS=${XDG_CONFIG_DIRS:-/etc/xdg}
export XDG_RUNTIME_DIR=${XDG_RUNTIME_DIR:-/tmp/xdg-$USER}

for script in /etc/profile.d/*.sh ; do
        if [ -r $script ] ; then
                . $script
        fi
done

unset script

# End /etc/zsh/zprofile
EOF

The first time zsh is executed, you will be prompted by messages asking several questions. The answers will be used to create a ~/.zshrc file. If you wish to run these questions again, run zsh /usr/share/zsh/5.9.2/functions/zsh-newuser-install -f.

There are several built-in advanced prompts. In the zsh shell, start advanced prompt support with autoload -U promptinit, then promptinit. Available prompt names are listed with prompt -l. Select a particular one with prompt <prompt-name>. Display all available prompts with prompt -p. Except for the list and display commands above, you can insert the other ones in ~/.zshrc to be automatically executed when the shell starts, with the prompt you chose.

Configuration Information

Update /etc/shells to include the zsh shell program names (as the root user):

cat >> /etc/shells << "EOF"
/bin/zsh
EOF