1. Which one of the following command saves the command history of GDB in a file?
2. When a target of makefile fails to execute
3. Which command sets the number for all lines?
4. Which of these commands will set the permissions on file textfile to read and write for the owner, read for the group, and nothing for everyone else?
5. Which one of the following is not true?
6. Which of the following commands will allow the user to search contents of a file for a particular pattern
7. Daemon process is a?
8. What is the output of this program?
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<sys/types.h>
#include<sys/ipc.h>
#include<sys/msg.h>
struct data_st{
long int id;
char buff[11];
};
int main()
{
int m_id;
struct data_st data1, data2;
m_id = msgget((key_t)181,0666|IPC_CREAT);
if(m_id == -1)
perror("msgget");
data1.id = 1;
strcpy(data1.buff,"Example");
if(msgsnd(m_id,&data1,11,0) == -1)
perror("msgsnd");
if(msgctl(m_id,IPC_RMID,0) != 0)
perror("msgctl");
if(msgrcv(m_id,&data2,11,1,0) == -1)
perror("msgrcv");
printf("%s\n",data2.buff);
return 0;
}
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<sys/types.h>
#include<sys/ipc.h>
#include<sys/msg.h>
struct data_st{
long int id;
char buff[11];
};
int main()
{
int m_id;
struct data_st data1, data2;
m_id = msgget((key_t)181,0666|IPC_CREAT);
if(m_id == -1)
perror("msgget");
data1.id = 1;
strcpy(data1.buff,"Example");
if(msgsnd(m_id,&data1,11,0) == -1)
perror("msgsnd");
if(msgctl(m_id,IPC_RMID,0) != 0)
perror("msgctl");
if(msgrcv(m_id,&data2,11,1,0) == -1)
perror("msgrcv");
printf("%s\n",data2.buff);
return 0;
}9. Which of the following umask settings doesn't allow execute permission to be set by default on directory files
10. The directories of /sys directory
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