diff --git a/cpp/linuxdump.txt b/cpp/linuxdump.txt
index 10f7d56..4032ace 100644
--- a/cpp/linuxdump.txt
+++ b/cpp/linuxdump.txt
@@ -1,5 +1,6 @@
 cpp程序在Linux下生成dump文件。
 1.编辑：/etc/sysctl.d/99-core-dump.conf (99是优先级规则)
+内容为：kernel.core_pattern=/tmp/core.%e.%p.%t
 2.应用：sudo sysctl -p /etc/sysctl.d/99-core-dump.conf
 临时应用：sudo sysctl -w kernel.core_pattern=/tmp/coredump/core.%e.%p.%t
 3.sudo mkdir -p /tmp/coredump