Update

SCR1.2/TP11/get_numb.c

@@ -0,0 +1,34 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+int main(int argc, char *argv[]){
+	if (argc != 3){
+		fprintf(stderr, "%c <file_name> <offset>", argv[0]);
+		exit(1);
+	}
+	off_t offset;
+	ssize_t nb_read;
+	int nb, n;
+	int fdin;
+	fdin = open(argv[1], O_RDONLY);
+	if (fdin == -1){
+		perror("File can't be opened");
+		exit(2);
+	}
+	offset = (off_t) strtol (argv[2], NULL, 0);
+	n = lseek(fdin, offset * sizeof(int), SEEK_SET);
+	if (!n){
+		perror("Offset is out of range!");
+		exit(3);
+	}
+	nb_read=read(fdin, &nb, sizeof(int));
+	if (nb_read < 0){
+		perror("File can't be read");
+		exit(4);
+	}
+	printf("The number at offset %s is %x --> %d\n", argv[2], nb, nb);
+	return EXIT_SUCCESS;
+}
+

SCR1.2/TP11/put_nub.c

@@ -0,0 +1,27 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+int main(int argc, char *argv[]){
+	if (argc != 4){
+		fprintf(stderr, "%c <file_name> <32-bit in Hex> <Offset in Hex>", argv[0]);
+		exit(1);
+	}
+	off_t offset;
+	ssize_t nb_write;
+	int nb, n;
+	int fdin;
+	fdin = open(argv[1],O_WRONLY);
+	if (fdin == -1){
+		perror("File can't be opened");
+		exit(2);
+	}
+	offset = (off_t) strtol (argv[3], NULL, 16);
+	nb = (int) strtol(argv[2], NULL, 16);
+	n = lseek(fdin, offset * sizeof(int), SEEK_SET);
+	nb_write=write(fdin, &nb, sizeof(int));
+	printf("%x", nb);
+	return EXIT_SUCCESS;
+}
+

SCR2.1/TP13/tp13-notes.txt

@@ -0,0 +1,20 @@
+Question 1)
+La commande ip addr permet d'afficher les interfaces réseau de notre machine
+
+Question 2)
+La commande ip addr show lo permet d'afficher l'interface réseau associée au loopback
+
+Question 3)
+La commande ip link show
+
+Question 4)
+ip link show eno1
+
+Question 5)
+ip neigh
+
+Question 6)
+ip neigh -r
+
+Question 7)
+ip route