From 14bf197be1effaa9fd6e9272aba2398288333431 Mon Sep 17 00:00:00 2001
From: ballerburg9005 <50874674+ballerburg9005@users.noreply.github.com>
Date: Thu, 12 Aug 2021 15:14:31 +0200
Subject: [PATCH] "sort -R" command not POSIX, added "shuf" and "cat" as
 fallback

---
 tools/captcha-ng.sh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/captcha-ng.sh b/tools/captcha-ng.sh
index cbcb95407..bb57385c4 100755
--- a/tools/captcha-ng.sh
+++ b/tools/captcha-ng.sh
@@ -42,7 +42,8 @@ INTRUDER()
 {
 NUMBERS=$(echo "$INPUT" | grep -o . | tr '\n' ' ')
 SORTED_UNIQ_NUM=$(echo "${NUMBERS[@]}" | sort -u | tr '\n' ' ')
-RANDOM_DIGITS=$(echo 123456789 | grep -o . | sort -R | tr '\n' ' ')
+SORT_RANDOM_CMD="$( ( echo x|sort -R >&/dev/null && echo "sort -R" ) || ( echo x|shuf >&/dev/null && echo shuf ) || echo cat)"
+RANDOM_DIGITS=$(echo 123456789 | grep -o . | eval "$SORT_RANDOM_CMD" | tr '\n' ' ')
 INTRUDER=-1
 
 for i in $RANDOM_DIGITS