added find_broken_symlinks.sh

bin/find_broken_symlinks.sh

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+#  vim:ts=4:sts=4:sw=4:et
+#
+#  Author: Hari Sekhon
+#  Date: 2023-05-10 03:16:48 +0100 (Wed, 10 May 2023)
+#
+#  https://github.com/HariSekhon/DevOps-Bash-tools
+#
+#  License: see accompanying Hari Sekhon LICENSE file
+#
+#  If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
+#
+#  https://www.linkedin.com/in/HariSekhon
+#
+
+set -euo pipefail
+[ -n "${DEBUG:-}" ] && set -x
+srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+# shellcheck disable=SC1090,SC1091
+. "$srcdir/lib/utils.sh"
+
+# shellcheck disable=SC2034,SC2154
+usage_description="
+Finds symlinks which point to non-existent files
+"
+
+# used by usage() in lib/utils.sh
+# shellcheck disable=SC2034
+usage_args="[<dir>]"
+
+help_usage "$@"
+
+max_args 1 "$@"
+
+dir="${1:-.}"
+
+find "$dir" -type l |
+while read -r symlink; do
+    target="$(readlink -f "$symlink")"
+    if ! [ -e "$target" ]; then
+        echo "Symlink broken: $symlink -> $target"
+    fi
+done