ollama_update.sh

#!/bin/zsh

INSTALL_DIR="$HOME/utils"
OLLAMA_BIN="$INSTALL_DIR/ollama"

mkdir -p "$INSTALL_DIR"

get_installed_version() {
  if [ -x "$OLLAMA_BIN" ]; then
    "$OLLAMA_BIN" -v 2>&1 | grep "client version is" | grep -oE '[0-9.]+$'
  else
    echo ""
  fi
}

get_latest_version() {
  curl -s https://api.github.com/repos/ollama/ollama/releases/latest | jq -r '.tag_name' | sed 's/^v//'
}

get_download_url() {
    local url=$(curl -s https://api.github.com/repos/ollama/ollama/releases/latest | \
                jq -r '.assets[] | select(.name | contains("ollama-darwin.tgz")) | .browser_download_url')
    if [ -z "$url" ]; then
        echo "Error: Could not retrieve latest release URL."
        exit 1
    fi
    echo "$url"
}

installed_version=$(get_installed_version)
latest_version=$(get_latest_version)

echo "Installed Ollama version: $installed_version"
echo "Latest Ollama version: $latest_version"

if [[ "$installed_version" == "$latest_version" ]]; then
    echo "Ollama is already up to date."
    exit 0
elif [ -z "$latest_version" ]]; then
    echo "Could not determine latest version from GitHub."
    exit 1
else
    if [[ "$installed_version" == "" ]]; then
        echo "Ollama is not installed. Installing..."
    else
        echo "A newer version is available. Updating..."
    fi
    
    temp_dir=$(mktemp -d)
    temp_file="$temp_dir/ollama.tgz"
    
    curl -L "$(get_download_url)" -o "$temp_file"
    tar -xzf "$temp_file" -C "$temp_dir"
    
    mv "$temp_dir/ollama" "$OLLAMA_BIN"
    chmod +x "$OLLAMA_BIN"
    
    rm -rf "$temp_dir"
    
    echo "Ollama $(if [[ "$installed_version" == "" ]]; then echo "installed"; else echo "updated"; fi) successfully!"
    ollama -v
fi

Before using this script, please change INSTALL_DIR="$HOME/utils" to the folder where your Ollama binary file is located.