From 3127c2cd8f7e406adf995dc64561cc3fdb6ba702 Mon Sep 17 00:00:00 2001
From: Chee Bin Hoh <cheebin.hoh@gmail.com>
Date: Mon, 25 May 2026 14:55:51 -0400
Subject: [PATCH] feature/add-signal-to-int

---
 linux/my-shell.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/linux/my-shell.c b/linux/my-shell.c
index d4aa2f4..64b01a5 100644
--- a/linux/my-shell.c
+++ b/linux/my-shell.c
@@ -5,6 +5,7 @@
  */
 
 #include <errno.h>
+#include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -12,12 +13,19 @@
 #include <sys/wait.h>
 #include <unistd.h>
 
+static void sig_int(int signo);
+
 int main(int argc, char *argv[]) {
   char buf[BUFSIZ];
   int n;
   pid_t pid;
   int status;
 
+  if (signal(SIGINT, sig_int) == SIG_ERR) {
+    fprintf(stderr, "error in signal SIGINT: %s\n", strerror(errno));
+    exit(1);
+  }
+
   printf("%% ");
   while (fgets(buf, sizeof(buf), stdin) != NULL) {
     if ('\n' == buf[strlen(buf) - 1]) {
@@ -43,3 +51,5 @@ int main(int argc, char *argv[]) {
 
   exit(0);
 }
+
+static void sig_int(int signo) { printf("interrupt signal: %d\n", signo); }