From cc159fe7fdf77a82116a51d92e538172cb2dda30 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phane=20Lesimple?= <speed47_github@speed47.net>
Date: Mon, 8 Jun 2026 21:41:08 +0200
Subject: [PATCH] fix: dmesg_grep: avoid sigpipe on some systems (#519)

Use 'grep -m 1' (works under Linux, busybox, BSD) instead of piping to head -n1
---
 src/libs/330_cpu_misc.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libs/330_cpu_misc.sh b/src/libs/330_cpu_misc.sh
index 4245a38..75e0004 100644
--- a/src/libs/330_cpu_misc.sh
+++ b/src/libs/330_cpu_misc.sh
@@ -9,7 +9,7 @@ dmesg_grep() {
         # dmesg truncated
         return 2
     fi
-    ret_dmesg_grep_grepped=$(dmesg 2>/dev/null | grep -E "$1" | head -n1)
+    ret_dmesg_grep_grepped=$(dmesg 2>/dev/null | grep -m 1 -E "$1")
     # not found:
     [ -z "$ret_dmesg_grep_grepped" ] && return 1
     # found, output is in $ret_dmesg_grep_grepped