From 7e3465269dae0b2f470c0ce474ec5f2b8bd69321 Mon Sep 17 00:00:00 2001
From: Xiufeng Guo <i@m.ac>
Date: Thu, 31 Oct 2024 02:28:17 +0900
Subject: [PATCH] Update debian.sh

---
 debian.sh | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/debian.sh b/debian.sh
index 69bcfcf..5cb67d8 100644
--- a/debian.sh
+++ b/debian.sh
@@ -287,8 +287,13 @@ function custom_sysctl() {
     printf "\E[0;35;40m"
     echo '### Custom sysctl.conf ###'
     printf "\E[0m"
-    cp -r /etc/sysctl.conf /etc/sysctl.conf.$(date +"%Y_%m_%d_%I_%M_%p").bak
-    cat /dev/null > /etc/sysctl.conf
+
+    # Backup sysctl.conf
+    if [ -f /etc/sysctl.conf ]; then
+        cp -r /etc/sysctl.conf /etc/sysctl.conf.$(date +"%Y_%m_%d_%I_%M_%p").bak
+        cat /dev/null > /etc/sysctl.conf
+    fi
+
     cat > /etc/sysctl.d/local.conf << EOF
 net.ipv4.ip_forward = 1
 net.ipv4.conf.all.proxy_arp = 0
@@ -330,7 +335,9 @@ net.ipv4.ipfrag_high_thresh = 4194304
 net.ipv4.ipfrag_low_thresh = 3145728
 net.ipv4.ping_group_range = 0 2147483647
 EOF
+
     sysctl -p
+
     printf "\E[0;33;40m"
     echo "### Custom sysctl.conf added ###"
     printf "\E[0m"