Merge pull request #493 from cmoulliard/issue-482

Add bash installation script for macos or linux users

scripts/install.sh

@@ -0,0 +1,82 @@
+#!/bin/sh
+
+#
+# This file will be  fetched as: curl -L https://git.io/getLatestKubebuilder | sh -
+# so it should be pure bourne shell, not bash (and not reference other scripts)
+#
+# The script fetches the latest kubebuilder release candidate and untars it.
+# It lets users to do curl -L https://git.io//getLatestKubebuilder | KUBEBUILDER_VERSION=1.0.5 sh -
+# for instance to change the version fetched.
+
+# Check if the program is installed, otherwise exit
+function command_exists () {
+  if ! [ -x "$(command -v $1)" ]; then
+    echo "Error: $1 program is not installed." >&2
+    exit 1
+  fi
+}
+
+# Determine OS
+OS="$(uname)"
+case $OS in
+  Darwin)
+    OSEXT="darwin"
+    ;;
+  Linux)
+    OSEXT="linux"
+    ;;
+  *)
+    echo "Only OSX and Linux OS are supported !"
+    exit 1
+    ;;
+esac
+
+HW=$(uname -m)
+case $HW in
+    x86_64)
+      ARCH=amd64 ;;
+    *)
+      echo "Only x86_64 machines are supported !"
+      exit 1
+      ;;
+esac
+
+# Check if curl, tar commands/programs exist
+command_exists curl
+command_exists tar
+
+if [ "x${KUBEBUILDER_VERSION}" = "x" ] ; then
+  KUBEBUILDER_VERSION=$(curl -L -s https://api.github.com/repos/kubernetes-sigs/kubebuilder/releases/latest | \
+                  grep tag_name | sed "s/ *\"tag_name\": *\"\\(.*\\)\",*/\\1/")
+fi
+
+KUBEBUILDER_VERSION=${KUBEBUILDER_VERSION#"v"}
+KUBEBUILDER_VERSION_NAME="kubebuilder_${KUBEBUILDER_VERSION}"
+KUBEBUILDER_DIR=/usr/local/kubebuilder
+
+# Check if folder containing kubebuilder executable exists and is not empty
+if [ -d "$KUBEBUILDER_DIR" ]; then
+  if [ "$(ls -A $KUBEBUILDER_DIR)" ]; then
+    echo "\n/usr/local/kubebuilder folder is not empty. Please delete or backup it before to install ${KUBEBUILDER_VERSION_NAME}"
+    exit 1
+  fi
+fi
+
+TMP_DIR=$(mktemp -d)
+pushd $TMP_DIR
+
+# Downloading Kuberbuilder compressed file using curl program
+URL="https://github.com/kubernetes-sigs/kubebuilder/releases/download/v${KUBEBUILDER_VERSION}/${KUBEBUILDER_VERSION_NAME}_${OSEXT}_${ARCH}.tar.gz"
+echo "Downloading ${KUBEBUILDER_VERSION_NAME}\nfrom $URL\n"
+curl -L "$URL"| tar xz -C $TMP_DIR
+
+echo "Downloaded executable files"
+ls "${KUBEBUILDER_VERSION_NAME}_${OSEXT}_${ARCH}/bin"
+
+echo "Moving files to $KUBEBUILDER_DIR folder\n"
+mv ${KUBEBUILDER_VERSION_NAME}_${OSEXT}_${ARCH} kubebuilder && sudo mv -f kubebuilder /usr/local/
+
+echo "Add kubebuilder to your path; e.g copy paste in your shell and/or edit your ~/.profile file"
+echo "export PATH=\$PATH:/usr/local/kubebuilder/bin"
+popd
+rm -rf $TMP_DIR