add uninstall.sh

scripts/uninstall.sh

@@ -0,0 +1,48 @@
+#!/bin/sh
+# This script uninstalls Ollama on Linux.
+set -eu
+
+EUID=$(id -u)
+if [ "${EUID}" -ne 0 ]; then
+    echo 2>&1 "[ERR] $0 must be run as root."
+    exit 1
+fi
+
+if [ -f /etc/systemd/system/ollama.service ]; then
+    SYSTEMCTL_RUNNING=$(systemctl is-system-running || true)
+    case "${SYSTEMCTL_RUNNING}" in
+    running | degraded)
+        systemctl stop ollama
+        systemctl disable ollama
+        rm /etc/systemd/system/ollama.service
+        systemctl daemon-reload
+        ;;
+    *)
+        rm /etc/systemd/system/ollama.service
+        echo 2>&1 "[WRN] systemd is not running."
+        ;;
+    esac
+fi
+
+# https://github.com/ollama/ollama/blob/main/scripts/install.sh#L69
+for BINDIR in /usr/local/bin /usr/bin /bin; do
+    echo "${PATH}" | grep -q "${BINDIR}" && break
+done
+OLLAMA_INSTALL_DIR=$(dirname "${BINDIR}")
+
+rm -rf "${OLLAMA_INSTALL_DIR}/bin/ollama"
+rm -rf "${OLLAMA_INSTALL_DIR}/lib/ollama"
+rm -rf "/usr/share/ollama"
+
+if getent passwd ollama >/dev/null 2>&1; then
+    userdel ollama
+fi
+
+if getent group ollama >/dev/null 2>&1; then
+    groupdel ollama
+fi
+
+if [ -n "${SUDO_USER}" ]; then
+    user_home=$(getent passwd "${SUDO_USER}" | cut -d: -f6)
+    rm -rf "${user_home}/.ollama"
+fi