31. Which one of the following is not true about GDB?
32. In Linux kernel-2.6 Real time priority ranges from
33. What is the function of bind command in bash shell?
34. If the argument is supplied to the exit statement,
35. Which signal is generated when we press control-C?
36. How do you get parent process identification number?
37. printf() uses which system call
38. Sysfs was originally called
39. Which command can be used to test various file attributes
40. What is the output of this pogram?
#include<stdio.h>
#include<stdlib.h>
#include<sys/types.h>
#include<sys/ipc.h>
#include<sys/sem.h>
static int sem_p(void);
static int sem_v(void);
union semun{
int val;
struct semid_ds *buf;
unsigned short array;
};
int sem_id;
struct semid_ds myds;
struct sembuf mybuf;
union semun myun;
static int sem_p(void)
{
mybuf.sem_num = 0;
mybuf.sem_op = -1;
mybuf.sem_flg = SEM_UNDO;
semop(sem_id,&mybuf,1);
}
static int sem_v(void)
{
mybuf.sem_num = 0;
mybuf.sem_op = 1;
mybuf.sem_flg = SEM_UNDO;
semop(sem_id,&mybuf,1);
}
int main()
{
int wfd, rfd;
sem_id = semget((key_t)911,1,0666 | IPC_CREAT);
myun.val = 0;
semctl(sem_id,0,SETVAL,myun);
sem_p();
printf("Example\n");
sem_v();
semctl(sem_id,0,IPC_RMID,myun);
return 0;
}
#include<stdio.h>
#include<stdlib.h>
#include<sys/types.h>
#include<sys/ipc.h>
#include<sys/sem.h>
static int sem_p(void);
static int sem_v(void);
union semun{
int val;
struct semid_ds *buf;
unsigned short array;
};
int sem_id;
struct semid_ds myds;
struct sembuf mybuf;
union semun myun;
static int sem_p(void)
{
mybuf.sem_num = 0;
mybuf.sem_op = -1;
mybuf.sem_flg = SEM_UNDO;
semop(sem_id,&mybuf,1);
}
static int sem_v(void)
{
mybuf.sem_num = 0;
mybuf.sem_op = 1;
mybuf.sem_flg = SEM_UNDO;
semop(sem_id,&mybuf,1);
}
int main()
{
int wfd, rfd;
sem_id = semget((key_t)911,1,0666 | IPC_CREAT);
myun.val = 0;
semctl(sem_id,0,SETVAL,myun);
sem_p();
printf("Example\n");
sem_v();
semctl(sem_id,0,IPC_RMID,myun);
return 0;
}Read More Section(Linux)
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