install.sh

#!/bin/sh
# Ollama installation script for environments without sudo access
# Uses only /tmp/ directory

set -eu

status() { echo ">>> $*" >&2; }
error() { echo "ERROR: $*"; exit 1; }

TEMP_DIR=$(mktemp -d)
cleanup() { rm -rf $TEMP_DIR; }
trap cleanup EXIT

available() { command -v $1 >/dev/null; }

[ "$(uname -s)" = "Linux" ] || error 'This script is intended to run on Linux only.'

ARCH=$(uname -m)
case "$ARCH" in
    x86_64) ARCH="amd64" ;;
    aarch64|arm64) ARCH="arm64" ;;
    *) error "Unsupported architecture: $ARCH" ;;
esac

NEEDS=""
for TOOL in curl tar; do
    if ! available $TOOL; then
        NEEDS="$NEEDS $TOOL"
    fi
done

if [ -n "$NEEDS" ]; then
    error "Missing required tools:$NEEDS"
fi

VER_PARAM="${OLLAMA_VERSION:+?version=$OLLAMA_VERSION}"

INSTALL_DIR="/tmp/ollama"
mkdir -p "$INSTALL_DIR"

status "Installing ollama to $INSTALL_DIR"
status "Downloading Linux ${ARCH} bundle"

curl --fail --show-error --location --progress-bar \
    "https://ollama.com/download/ollama-linux-${ARCH}.tgz${VER_PARAM}" | \
    tar -xzf - -C "$INSTALL_DIR"

status "Installation complete!"
status "To use ollama, run: $INSTALL_DIR/bin/ollama"
status "To start the server: $INSTALL_DIR/bin/ollama serve &"
status ""
status "Add to PATH: export PATH=\$PATH:$INSTALL_DIR/bin"