Set up a fresh server (runpod, linode, etc.) the way I like it.

bootstrap_fresh_host.sh

bash -lc 'set -e
need(){ command -v "$1" >/dev/null 2>&1; }
sudo_(){ need sudo && sudo "$@" || "$@"; }

# ---- install zsh + basics (NO apt update) ----
if need apt-get; then
  sudo_ DEBIAN_FRONTEND=noninteractive apt-get -y install zsh git curl >/dev/null 2>&1 || true
elif need brew; then
  brew install zsh git curl >/dev/null 2>&1 || true
fi

# ---- set zsh as default shell ----
ZSH_BIN="$(command -v zsh || true)"
[ -n "$ZSH_BIN" ] && [ "${SHELL:-}" != "$ZSH_BIN" ] && chsh -s "$ZSH_BIN" >/dev/null 2>&1 || true

# ---- install Oh-My-Zsh ----
[ -d "$HOME/.oh-my-zsh" ] || RUNZSH=no CHSH=no sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)" >/dev/null 2>&1 || true

ZSH_CUSTOM="${ZSH_CUSTOM:-$HOME/.oh-my-zsh/custom}"
clone(){ [ -d "$2/.git" ] && return; git clone -q --depth=1 "$1" "$2" >/dev/null 2>&1 || true; }

clone https://github.com/zsh-users/zsh-syntax-highlighting "$ZSH_CUSTOM/plugins/zsh-syntax-highlighting"
clone https://github.com/zsh-users/zsh-autosuggestions "$ZSH_CUSTOM/plugins/zsh-autosuggestions"
clone https://github.com/zsh-users/zsh-completions "$ZSH_CUSTOM/plugins/zsh-completions"

ZSHRC="$HOME/.zshrc"; touch "$ZSHRC"

# ---- base OMZ config ----
grep -q "^export ZSH=" "$ZSHRC" || printf "\nexport ZSH=\"\$HOME/.oh-my-zsh\"\nZSH_THEME=\"robbyrussell\"\n" >>"$ZSHRC"
grep -q "^plugins=" "$ZSHRC" || echo "plugins=(git dirhistory zsh-completions zsh-autosuggestions zsh-syntax-highlighting)" >>"$ZSHRC"

# ---- sane Zsh config (added once) ----
grep -q "tag: base-zsh" "$ZSHRC" || cat >>"$ZSHRC" <<'"'"'EOF'"'"'

# ==========================
# tag: base-zsh
# ==========================

# Detect SSH
is_ssh(){ [[ -n "$SSH_CONNECTION" || -n "$SSH_TTY" ]]; }

# ----- Deferred compinit (fast startup) -----
autoload -Uz compinit
__did_compinit=0
__lazy_compinit() {
  (( __did_compinit )) && return
  __did_compinit=1
  compinit -C 2>/dev/null || true
}
__complete() { __lazy_compinit; zle expand-or-complete }
zle -N expand-or-complete __complete

# ----- Completion styles (QUOTED) -----
zstyle ':completion:*' use-cache on
zstyle ':completion:*' cache-path ~/.zsh/cache
zstyle ':completion:*' menu select
zstyle ':completion:*' matcher-list 'm:{a-zA-Z}={A-Za-z}'
zstyle ':completion:*' squeeze-slashes true
zstyle ':completion:*' verbose no

# ----- Autosuggestions (SSH-safe) -----
ZSH_AUTOSUGGEST_STRATEGY=(history)
ZSH_AUTOSUGGEST_BUFFER_MAX_SIZE=10
ZSH_AUTOSUGGEST_USE_ASYNC=1
is_ssh && ZSH_AUTOSUGGEST_USE_ASYNC=0

# ----- History sanity -----
HISTSIZE=10000
SAVEHIST=100000
setopt APPEND_HISTORY INC_APPEND_HISTORY SHARE_HISTORY
setopt HIST_IGNORE_ALL_DUPS HIST_REDUCE_BLANKS HIST_IGNORE_SPACE

# ----- Keys -----
bindkey "^?" backward-delete-char
bindkey "^H" backward-kill-word
bindkey -e

# ----- QoL -----
setopt autocd correct
unsetopt beep

# ----- Small helpers -----
alias c="clear"
alias ..="cd .."
alias ...="cd ../.."
mkcd(){ mkdir -p -- "$1" && cd -- "$1"; }
path(){ echo "$PATH" | tr ":" "\n"; }

# ----- Load OMZ last -----
[ -f "$ZSH/oh-my-zsh.sh" ] && source "$ZSH/oh-my-zsh.sh"

EOF

echo "✅ Zsh installed & configured. Log out/in or run: exec zsh"'

setup_zsh.sh