chore: Added script to unintall npm.

Author: dlabaj

README.md

@@ -35,6 +35,31 @@ If you already have the [prerequisites](#prerequisites) on your machine, install
 npm install -g @patternfly/patternfly-cli
 ```
 
+## Uninstall
+
+### Uninstall script (macOS and Linux)
+
+You can pipe the repository uninstall script into `bash`. It removes the globally installed `@patternfly/patternfly-cli` package with npm. It does **not** remove Node.js, nvm, Corepack, or GitHub CLI.
+
+```sh
+curl -fsSL https://raw.githubusercontent.com/patternfly/patternfly-cli/main/scripts/uninstall.sh | bash
+```
+
+Swap `main` for another branch or tag if you need a specific revision. To save the script and inspect it before running:
+
+```sh
+curl -fsSL https://raw.githubusercontent.com/patternfly/patternfly-cli/main/scripts/uninstall.sh -o uninstall-patternfly-cli.sh
+bash uninstall-patternfly-cli.sh
+```
+
+### npm
+
+If you installed with npm globally, you can remove the package with:
+
+```sh
+npm uninstall -g @patternfly/patternfly-cli
+```
+
 ## Prerequisites
 
 If you use the [install script](#install-script-macos-and-linux) on macOS or Linux, it covers the items below (you may still need administrator access for system packages). Otherwise, install the following yourself before using the CLI:

scripts/uninstall.sh

@@ -0,0 +1,67 @@
+#!/usr/bin/env bash
+# Remove the globally installed @patternfly/patternfly-cli package from npm.
+# Does not remove Node.js, nvm, Corepack, or GitHub CLI.
+
+# Set script to stop on most failures.
+set -euo pipefail
+
+error() {
+  printf '\n[%s] ERROR: %s\n\n' "$(date -u +'%Y-%m-%dT%H:%M:%SZ')" "$*" >&2
+  exit 1
+}
+
+info() {
+  printf '[uninstall] %s\n' "$*"
+}
+
+warn() {
+  printf '[uninstall] WARNING: %s\n' "$*" >&2
+}
+
+require_cmd() {
+  command -v "$1" >/dev/null 2>&1
+}
+
+ensure_nvm_loaded() {
+  export NVM_DIR="${NVM_DIR:-$HOME/.nvm}"
+  if [ -s "$NVM_DIR/nvm.sh" ]; then
+    # shellcheck source=/dev/null
+    . "$NVM_DIR/nvm.sh"
+    return 0
+  fi
+  return 1
+}
+
+ensure_node_for_npm() {
+  if require_cmd node && require_cmd npm; then
+    return 0
+  fi
+  if ensure_nvm_loaded; then
+    nvm use default >/dev/null 2>&1 || true
+  fi
+  if require_cmd node && require_cmd npm; then
+    return 0
+  fi
+  error "Node.js and npm are required to uninstall the package. Install Node or load nvm (see install script), then try again."
+}
+
+uninstall_patternfly_cli() {
+  info "Removing @patternfly/patternfly-cli from global npm packages."
+  npm uninstall -g @patternfly/patternfly-cli || error "npm failed to uninstall @patternfly/patternfly-cli. Check permissions and which Node/npm you are using ($(command -v npm 2>/dev/null || echo 'npm not found'))."
+}
+
+main() {
+  info "Uninstalling PatternFly CLI (global npm package only)."
+  ensure_node_for_npm
+  uninstall_patternfly_cli
+
+  if require_cmd patternfly-cli; then
+    warn "patternfly-cli is still on PATH at $(command -v patternfly-cli). You may have another global install under a different Node version or runtime."
+  fi
+
+  printf '\n'
+  printf 'SUCCESS: @patternfly/patternfly-cli has been removed from this npm global prefix.\n'
+  printf '\n'
+}
+
+main "$@"