From 1a495e3e63f8172f6f90e4fda4a0aade4dd37c40 Mon Sep 17 00:00:00 2001
From: foxliver <foxliver@naver.com>
Date: Thu, 25 Sep 2025 15:57:35 +0900
Subject: [PATCH] IPC File communication

---
 Practice_06/ipcFile.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 Practice_06/ipcFile.c

diff --git a/Practice_06/ipcFile.c b/Practice_06/ipcFile.c
new file mode 100644
index 0000000..e394139
--- /dev/null
+++ b/Practice_06/ipcFile.c
@@ -0,0 +1,28 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/wait.h>
+
+int main(){
+    int fd, pid, n;
+    char buf[10];
+
+    fd = open("test.txt", O_RDWR);
+    pid = fork();
+
+    if(pid == 0){
+        write(fd, "FOXLIVER", O_RDWR);
+        close(fd);
+        exit(0);
+    }else{
+        wait(0);
+        lseek(fd, 0, SEEK_SET);
+        n = read(fd, buf, 9);
+        buf[n] = '\0';
+        printf("%s \n", buf);
+        close(fd);
+    }
+
+    return 0;
+}
\ No newline at end of file