server setup

install.sh

#!/bin/sh

# disable "pending kernel upgrade" popup | https://askubuntu.com/a/1424249
sed -i "s/#\$nrconf{kernelhints} = -1;/\$nrconf{kernelhints} = -1;/g" /etc/needrestart/needrestart.conf

# ignore "daemons using outdated libraries" popup | https://stackoverflow.com/a/73397110#comment131834051_73397970
sed -i "/#\$nrconf{restart} = 'i';/s/.*/\$nrconf{restart} = 'a';/" /etc/needrestart/needrestart.conf

# set timezone
echo "\n—————\nSetting timezone to US Pacific…\n—————\n"
ln -fs /usr/share/zoneinfo/US/Pacific /etc/localtime
dpkg-reconfigure -f noninteractive tzdata

# update and upgrade packages
echo "\n—————\nUpdating and upgrading packages…\n—————\n"
apt update && apt upgrade -y

# install exa
echo "\n—————\nInstalling exa…\n—————\n"
apt install exa -y

# install zsh
echo "\n—————\nInstalling zsh…\n—————\n"
apt install zsh -y

# install ohmyzsh
echo "\n—————\nInstalling ohmyzsh…\n—————\n"
sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)" "" --unattended
exit # exit bash to use zsh

# make zsh default shell
chsh -s /usr/bin/zsh
zsh

echo "\n—————\nServer setup complete! Reboot if you want.\n—————\n"

sh -c "$(curl -fsSL https://gist.githubusercontent.com/NetOpWibby/4b8c4729b18171a1c3d322837835cf68/raw/e797d6732113b89663d2f195c5699f8b93b2bd4b/install.sh)"

Reboot after.

Ubuntu needs chsh -s /usr/bin/zsh apparently (instead of chsh -s $(which zsh)), to change default shell to zsh.

Why do I need to enter chsh -s /usr/bin/zsh AFTER the script runs and the server reboots, for it to stick?