Linux
practice.

The file /proc/[PID]/limits displays the . . . . . . . . for each of the process's resource limits.

What is the output of this program?

#include<stdio.h>
 
int main()
{
    if (mkfifo("/tmp/test_fifo",0666) != 0)
        perror("mkfifo");
    if (mkfifo("/tmp/test_fifo",0666) != 0)
        perror("mkfifo");
    return 0;
}

What is FNR?

x86 architecture uses big endian or little endian addressing mechanism?

The -fPIC option of gcc

Which command creates an empty file if file does not exist?

GDB stands for

Which of the following file set in the current directory are identified by the regular expression a?b*

What is the output of this program?

#include<stdio.h>
#include<sys/types.h>
#include<netinet/in.h>
#include<sys/socket.h>
#include<errno.h>
 
int main()
{
    struct sockaddr_in addr;
    int fd;
    fd = socket(AF_UNIX,SOCK_STREAM,0);
    if (fd == -1)
        perror("socket");
    addr.sun_family = AF_UNIX;
    strcpy(addr.sun_path,"demo_sock");
    if (bind(4,(struct sockaddr*)&addr,sizeof(addr)) == -1)
        printf("Example\n");
    return 0;
}

Which command is used to assign read-write permission to the owner?

Is page table per process entity?

What is the output of this program?

#include<stdio.h>
#include<pthread.h> 
#include<semaphore.h>
 
sem_t st;
void *fun_t(void *arg);
void *fun_t(void *arg)
{
    printf("Linux\n");
    pthread_exit("Bye");
    sem_post(&st);
}
int main()
{
    pthread_t pt;
    void *res_t;
    if(pthread_create(&pt,NULL,fun_t,NULL) == -1)
        perror("pthread_create");
    if(sem_init(&st,0,0) != 0)
        perror("sem_init");
    if(sem_wait(&st) != 0)
        perror("sem_wait");
    printf("Example\n");
    if(pthread_join(pt,&res_t) == -1)
        perror("pthread_join");
    if(sem_destroy(&st) != 0)
        perror("sem_destroy");
    return 0;
}

Which one of the following is not a system device?

dup2(1,0)

How do you rename file "new" to file "old"?

What is the output of this program?

#include<stdio.h>
#include<sys/types.h>
#include<sys/un.h>
#include<sys/socket.h>
 
int main()
{
    struct sockaddr_un add_server, add_client;
    int fd_server, fd_client;
    int len;
    char ch;
    fd_server = socket(AF_UNIX,SOCK_STREAM,0);
    if(fd_server == -1)
        perror("socket");
    add_server.sun_family = AF_UNIX;
    strcpy(add_server.sun_path,"demo_sock");
    if( bind(fd_server,(struct sockaddr*)&add_server,sizeof(add_server)) != 0)
        perror("bind");
    len = sizeof(add_client);
    fd_client = connect(fd_server,(struct sockaddr*)&add_client,&len);
    printf("Example\n"); 
    return 0;
}

With a umask value of 112, what is the default permission assigned to newly created regular file?

The command "cpp example.c > example.i" will

Which gcc option is used to specify the library?

All device files are stored in which directory?