diff --git a/.vscode/settings.json b/.vscode/settings.json
index eba2745..bc67dc0 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -6,6 +6,8 @@
         "stdlib.h": "c",
         "wait.h": "c",
         "*.bak": "c",
-        "*.tcc": "c"
+        "*.tcc": "c",
+        "errno.h": "c",
+        "string.h": "c"
     }
 }
\ No newline at end of file
diff --git a/minishell b/minishell
index a6d1e3b..a83f702 100755
Binary files a/minishell and b/minishell differ
diff --git a/minishell.c b/minishell.c
index 6d66e13..a79178e 100644
--- a/minishell.c
+++ b/minishell.c
@@ -11,15 +11,18 @@
 #include <setjmp.h>
 #include "readcmd.h"
 #include "jobs.h"
+#include "utils.h"
 
 extern int errno;
 
 struct cmdline *cmd;
 
-int pid_fils, wait_code;
-
 list jobs;
 
+int pid_fils;
+int wait_code;
+int builtin_code;
+
 int prompting = 0;
 jmp_buf goto_prompt;
 
@@ -30,81 +33,6 @@ int file_in, file_out;
 int pipes[256][2];
 int sous_fils[256];
 
-void handler_sigchld(int sig_num)
-{
-    do
-    {
-        pid_fils = waitpid(-1, &wait_code, WNOHANG | WUNTRACED | WCONTINUED);
-        if ((pid_fils == -1) && (errno != ECHILD))
-        { // wait fail ?
-            fprintf(stderr, "ERROR: waiting for %d failed, (%d) %s\n", pid_fils, errno, strerror(errno));
-            exit(errno);
-        }
-
-        cell *job = trouver(&jobs, pid_fils);
-        if (job != NULL)
-        {
-            if (prompting)
-            {
-                printf("\n");
-            }
-
-            if (WIFSTOPPED(wait_code))
-            {
-                printf("[%d] %d stopped: %s\n", job->id, job->pid, job->cmd);
-            }
-            else if (WIFCONTINUED(wait_code))
-            {
-                printf("[%d] %d continued: %s\n", job->id, job->pid, job->cmd);
-                if (!strcmp(cmd->seq[0][0], "fg"))
-                {
-                    supprimer(&jobs, job->pid);
-                }
-            }
-            else if (WIFEXITED(wait_code))
-            {
-                printf("[%d] %d exited: %s\n", job->id, job->pid, job->cmd);
-                supprimer(&jobs, job->pid);
-            }
-            else if (wait_code == SIGKILL)
-            {
-                printf("[%d] %d killed: %s\n", job->id, job->pid, job->cmd);
-                supprimer(&jobs, job->pid);
-            }
-        }
-    } while (pid_fils > 0);
-
-    if (prompting)
-    {
-        siglongjmp(goto_prompt, sig_num);
-    }
-}
-
-void handler_sigint(int sig_num)
-{
-    printf("\n");
-    if (!prompting)
-    {
-        kill(pid_fils, SIGKILL);
-        pause();
-    }
-    siglongjmp(goto_prompt, sig_num);
-}
-
-void handler_sigtstp(int sig_num)
-{
-    printf("\n");
-    if (!prompting)
-    {
-        ajouter(&jobs, pid_fils, *(cmd->seq));
-        kill(pid_fils, SIGSTOP);
-        pause();
-    }
-    siglongjmp(goto_prompt, sig_num);
-}
-
-// TODO handler dans un autre fichier
-
 int main(int argc, char *argv[])
 {
     initialiser(&jobs);
@@ -132,101 +60,19 @@ int main(int argc, char *argv[])
         cmd = readcmd();
         prompting = 0;
 
-        // TODO: créer fonction "builtin" ?
-        // continue ou break en fonction de l'entier de retour
-        if (cmd == NULL)
-        { // EOF
+        builtin_code = builtin();
+        if (builtin_code == 1)
+        {
             break;
         }
-        else if (cmd->err)
-        { // error from readcmd
-            fprintf(stderr, "ERROR: readcmd failed, %s\n", cmd->err);
+        else if (builtin_code == 2)
+        {
             continue;
         }
-        else if (cmd->seq[0] == NULL)
-        { // empty
-            continue;
-        }
-        else if (!strcmp(cmd->seq[0][0], "exit"))
-        { // "exit"
-            break;
-        }
-        else if (!strcmp(cmd->seq[0][0], "cd"))
-        { // "cd"
-            int ret = 0;
-            if (cmd->seq[0][1] == NULL)
-            { // no path
-                ret = chdir(initcd);
-            }
-            else
-            { // with path
-                ret = chdir(cmd->seq[0][1]);
-            }
-            if (ret)
-            { // wrong path
-                fprintf(stderr, "ERROR: cd failed, (%d) %s\n", errno, strerror(errno));
-            }
-            continue;
-        }
-        else if (!strcmp(cmd->seq[0][0], "jobs"))
-        { // "jobs"
-            afficher(&jobs);
-            continue;
-        }
-        else if (!strcmp(cmd->seq[0][0], "bg"))
-        { // "bg"
-            cell *job;
-            if (cmd->seq[0][1] == NULL)
-            { // no id
-                fprintf(stderr, "ERROR: id missing\n");
-                continue;
-            }
-            else
-            { // id specified
-                job = trouver_id(&jobs, atoi(cmd->seq[0][1]));
-            }
-            kill(job->pid, SIGCONT);
-            pause();
-            continue;
-        }
-        else if (!strcmp(cmd->seq[0][0], "fg"))
-        { // "fg"
-            cell *job;
-            if (cmd->seq[0][1] == NULL)
-            { // no id
-                fprintf(stderr, "ERROR: id missing\n");
-                continue;
-            }
-            else
-            { // id specified
-                job = trouver_id(&jobs, atoi(cmd->seq[0][1]));
-                pid_fils = job->pid;
-            }
-            kill(pid_fils, SIGCONT);
-            pause();
-            waitpid(pid_fils, NULL, 0);
-            continue;
-        }
-        else if (!strcmp(cmd->seq[0][0], "stop"))
-        { // "stop"
-            cell *job;
-            if (cmd->seq[0][1] == NULL)
-            { // no id
-                fprintf(stderr, "ERROR: id missing\n");
-                continue;
-            }
-            else
-            { // id specified
-                job = trouver_id(&jobs, atoi(cmd->seq[0][1]));
-            }
-            kill(job->pid, SIGSTOP);
-            pause();
-            continue;
-        }
-        else if (!strcmp(cmd->seq[0][0], "pid"))
-        { // "pid"
-            printf("pid=%d\n", getpid());
-            continue;
+        else if (builtin_code != 0)
+        {
+            fprintf(stderr, "ERROR: builtin command failed");
+            exit(1);
         }
 
         int nb_pipe = -1;
@@ -239,7 +85,7 @@ int main(int argc, char *argv[])
         if (nb_pipe < 0)
         { // counting failed ?
             fprintf(stderr, "ERROR: counting pipes failed");
-            exit(1);
+            exit(2);
         }
 
         if ((pid_fils = fork()) == -1)
diff --git a/utils.c b/utils.c
new file mode 100644
index 0000000..baeb338
--- /dev/null
+++ b/utils.c
@@ -0,0 +1,195 @@
+#define _GNU_SOURCE
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/wait.h>
+#include <string.h>
+#include <signal.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <setjmp.h>
+#include "readcmd.h"
+#include "jobs.h"
+
+extern int errno;
+extern int pid_fils;
+extern int wait_code;
+extern int prompting;
+extern list jobs;
+extern struct cmdline *cmd;
+extern jmp_buf goto_prompt;
+extern char initcd[];
+
+int builtin()
+{
+    if (cmd == NULL)
+    { // EOF
+        return 1;
+    }
+    else if (cmd->err)
+    { // error from readcmd
+        fprintf(stderr, "ERROR: readcmd failed, %s\n", cmd->err);
+        return 2;
+    }
+    else if (cmd->seq[0] == NULL)
+    { // empty
+        return 2;
+    }
+    else if (!strcmp(cmd->seq[0][0], "exit"))
+    { // "exit"
+        return 1;
+    }
+    else if (!strcmp(cmd->seq[0][0], "cd"))
+    { // "cd"
+        int ret = 0;
+        if (cmd->seq[0][1] == NULL)
+        { // no path
+            ret = chdir(initcd);
+        }
+        else
+        { // with path
+            ret = chdir(cmd->seq[0][1]);
+        }
+        if (ret)
+        { // wrong path
+            fprintf(stderr, "ERROR: cd failed, (%d) %s\n", errno, strerror(errno));
+        }
+        return 2;
+    }
+    else if (!strcmp(cmd->seq[0][0], "jobs"))
+    { // "jobs"
+        afficher(&jobs);
+        return 2;
+    }
+    else if (!strcmp(cmd->seq[0][0], "bg"))
+    { // "bg"
+        cell *job;
+        if (cmd->seq[0][1] == NULL)
+        { // no id
+            fprintf(stderr, "ERROR: id missing\n");
+            return 2;
+        }
+        else
+        { // id specified
+            job = trouver_id(&jobs, atoi(cmd->seq[0][1]));
+        }
+        kill(job->pid, SIGCONT);
+        pause();
+        return 2;
+    }
+    else if (!strcmp(cmd->seq[0][0], "fg"))
+    { // "fg"
+        cell *job;
+        if (cmd->seq[0][1] == NULL)
+        { // no id
+            fprintf(stderr, "ERROR: id missing\n");
+            return 2;
+        }
+        else
+        { // id specified
+            job = trouver_id(&jobs, atoi(cmd->seq[0][1]));
+            pid_fils = job->pid;
+        }
+        kill(pid_fils, SIGCONT);
+        pause();
+        waitpid(pid_fils, NULL, 0);
+        return 2;
+    }
+    else if (!strcmp(cmd->seq[0][0], "stop"))
+    { // "stop"
+        cell *job;
+        if (cmd->seq[0][1] == NULL)
+        { // no id
+            fprintf(stderr, "ERROR: id missing\n");
+            return 2;
+        }
+        else
+        { // id specified
+            job = trouver_id(&jobs, atoi(cmd->seq[0][1]));
+        }
+        kill(job->pid, SIGSTOP);
+        pause();
+        return 2;
+    }
+    else if (!strcmp(cmd->seq[0][0], "pid"))
+    { // "pid"
+        printf("pid=%d\n", getpid());
+        return 2;
+    }
+
+    return 0;
+}
+
+void handler_sigchld(int sig_num)
+{
+    do
+    {
+        pid_fils = waitpid(-1, &wait_code, WNOHANG | WUNTRACED | WCONTINUED);
+        if ((pid_fils == -1) && (errno != ECHILD))
+        { // wait fail ?
+            fprintf(stderr, "ERROR: waiting for %d failed, (%d) %s\n", pid_fils, errno, strerror(errno));
+            exit(errno);
+        }
+
+        cell *job = trouver(&jobs, pid_fils);
+        if (job != NULL)
+        {
+            if (prompting)
+            {
+                printf("\n");
+            }
+
+            if (WIFSTOPPED(wait_code))
+            {
+                printf("[%d] %d stopped: %s\n", job->id, job->pid, job->cmd);
+            }
+            else if (WIFCONTINUED(wait_code))
+            {
+                printf("[%d] %d continued: %s\n", job->id, job->pid, job->cmd);
+                if (!strcmp(cmd->seq[0][0], "fg"))
+                {
+                    supprimer(&jobs, job->pid);
+                }
+            }
+            else if (WIFEXITED(wait_code))
+            {
+                printf("[%d] %d exited: %s\n", job->id, job->pid, job->cmd);
+                supprimer(&jobs, job->pid);
+            }
+            else if (wait_code == SIGKILL)
+            {
+                printf("[%d] %d killed: %s\n", job->id, job->pid, job->cmd);
+                supprimer(&jobs, job->pid);
+            }
+        }
+    } while (pid_fils > 0);
+
+    if (prompting)
+    {
+        siglongjmp(goto_prompt, sig_num);
+    }
+}
+
+void handler_sigint(int sig_num)
+{
+    printf("\n");
+    if (!prompting)
+    {
+        kill(pid_fils, SIGKILL);
+        pause();
+    }
+    siglongjmp(goto_prompt, sig_num);
+}
+
+void handler_sigtstp(int sig_num)
+{
+    printf("\n");
+    if (!prompting)
+    {
+        ajouter(&jobs, pid_fils, *(cmd->seq));
+        kill(pid_fils, SIGSTOP);
+        pause();
+    }
+    siglongjmp(goto_prompt, sig_num);
+}
diff --git a/utils.h b/utils.h
new file mode 100644
index 0000000..1426e3d
--- /dev/null
+++ b/utils.h
@@ -0,0 +1,10 @@
+#ifndef __UTILS_H
+#define __UTILS_H
+
+int builtin();
+
+void handler_sigchld(int sig_num);
+void handler_sigint(int sig_num);
+void handler_sigtstp(int sig_num);
+
+#endif
\ No newline at end of file