From e615a2d36b6fa97db09ac1dfc3e2dd37216ad844 Mon Sep 17 00:00:00 2001
From: Anna Schumaker <Anna.Schumaker@Netapp.com>
Date: Tue, 30 Nov 2021 11:01:17 -0500
Subject: [PATCH] Create a grub-list.zsh command

For listing the available kernels on the current machine

Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
---
 completions/_grub-list.zsh |  7 +++++++
 grub-list.zsh              | 19 +++++++++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 completions/_grub-list.zsh
 create mode 100755 grub-list.zsh

diff --git a/completions/_grub-list.zsh b/completions/_grub-list.zsh
new file mode 100644
index 0000000..19f19d0
--- /dev/null
+++ b/completions/_grub-list.zsh
@@ -0,0 +1,7 @@
+#compdef grub-list.zsh
+
+function _grub-list.zsh() {
+	_arguments \
+		{-h,--help}'[print help text]' \
+		{-e,--entries-only}'[print entries without row numbers]'
+}
diff --git a/grub-list.zsh b/grub-list.zsh
new file mode 100755
index 0000000..709ba26
--- /dev/null
+++ b/grub-list.zsh
@@ -0,0 +1,19 @@
+#!/bin/zsh
+
+cmd=$0
+zparseopts e=entries -entries-only=entries h=help -help=help
+
+if [ ! -z "$help" ]; then
+	echo "Usage: $0 [-h|--help] [-e|--entries-only]"
+	echo "List the available GRUB menu options."
+	echo "  -e, --entries-only   print menu entries without row numbers"
+	echo "  -h, --help           print this message and exit"
+	exit 0
+fi
+
+menuentries=$(sudo awk -F\' '/menuentry / {print $2}' /boot/grub/grub.cfg)
+if [ -z "$entries" ]; then
+	echo $menuentries | awk '{print "    ", NR-1, " ", $0}'
+else
+	echo $menuentries
+fi