From b01a71f32db710b8bd0061a20106ddcfdc5f1abe Mon Sep 17 00:00:00 2001
From: Yunheng Liu <121078488+Kookiejarz@users.noreply.github.com>
Date: Wed, 4 Mar 2026 22:13:08 -0500
Subject: [PATCH] Replace random string generation method with OpenSSL for
 better randomness in install.sh

The previous implementation using cat /dev/urandom | tr caused tr to hang and consume 100% CPU on certain environments (e.g., GCP, specific kernels) due to delayed SIGPIPE handling. Using openssl provides a finite, cryptographically secure string that eliminates this CPU spike and is noticeably faster."
---
 install.sh | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/install.sh b/install.sh
index 9d1aeb6b..6a64e115 100644
--- a/install.sh
+++ b/install.sh
@@ -105,10 +105,12 @@ install_base() {
 
 gen_random_string() {
     local length="$1"
-    local random_string=$(LC_ALL=C tr -dc 'a-zA-Z0-9' </dev/urandom | fold -w "$length" | head -n 1)
-    echo "$random_string"
+    # openssl output base64，no need /dev/urandom + tr
+    openssl rand -base64 $(( length * 2 )) \
+        | tr -dc 'a-zA-Z0-9' \
+        | head -c "$length"
 }
-
+    
 install_acme() {
     echo -e "${green}Installing acme.sh for SSL certificate management...${plain}"
     cd ~ || return 1