diff --git a/Linux系统编程篇/04进程基础/execl.c b/Linux系统编程篇/04进程基础/execl.c
new file mode 100644
index 0000000..f0b2ced
--- /dev/null
+++ b/Linux系统编程篇/04进程基础/execl.c
@@ -0,0 +1,26 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+int main(void)
+{
+    int i = 0;
+    pid_t pid;
+    pid = fork();
+    if  (pid < 0)
+    {
+        printf("fork is error \n");
+        return -1;
+    }
+    // 父进程
+    if (pid > 0){
+        printf("this is parent, parent pid is %d\n",getppid());
+    }
+    // 子进程
+    if (pid == 0){
+        printf("this is dhild, child pid is %d\n",getpid());
+        
+    }
+    return 0;
+}
+