⟩ Which option of rmdir command will remove all directories a, b, c if path is a/b/c a) -b b) -o c) -p d) -t
c) -p
Question and Answer:
Home Linux Operating System Management
- Share
Popular Answers:
* There is no answer to the above question yet.
More Questions for you:
What happens as the SIGINT signal hits the running process of this program?
#include<stdio.h>
#include<signal.h>
#include<stdlib.h>
int main()
{
pid_t child;
signal(SIGINT,SIG_IGN);
child=fork();
switch(child){
case -1
perror("fork");
exit(1);
case 0
while(1){
printf("Child Processn");
sleep(1);
}
break;
default
while(1){
printf("Parent Processn");
pause();
}
break;
}
return 0;
}
a) child process terminates
b) parent process terminates
c) both child and parent process ignores the signal
d) none of the mentionedWhat will happen if we press "Ctrl+c" key two times after running this program?
#include<stdio.h>
#include<signal.h>
void response(int);
void response(int sig_no)
{
printf("Linuxn");
signal(SIGINT,SIG_DFL);
}
int main()
{
signal(SIGINT,response);
while(1){
printf("googlen");
sleep(1);
}
return 0;
}
a) process will terminate in the first time
b) process will terminate in the second time
c) process will never terminate
d) none of the mentionedWhat will happen as we press the "Ctrl+c" key after running this program?
#include<stdio.h>
#include<signal.h>
void response (int);
void response (int sig_no)
{
printf("Linuxn");
}
int main()
{
signal(SIGINT,response);
while(1){
printf("googlen");
sleep(1);
}
return 0;
}
a) the string "Linux" will print
b) the process will be terminated after printing the string "Linux"
c) the process will terminate
d) none of the mentionedAnother signal that cannot be caught is a) SIGPIPE b) SIGHUP c) SIGSTOP d) SIGUSR1
When real interval timer expires which signal is generated? a) SIGINT b) SIGCHLD c) SIGKILL d) SIGALRM
Signals are handled using which system call? a) kill b) signal c) both d) none
Default action of SIGSEGV is a) Terminate b) Core dump c) Stop d) Cont
The kill system call is used to a) Send shutdown messages to all by superuser b) Send a signal to a process c) Kill processes d) Stop the processes
What is the output of the below code?
void sig_handler ( int signum) {
printf("Handled the signaln");
}
int main() {
int pid;
signal (SIGKILL, sig_handler);
pid = fork();
if (pid==0) {
kill(getppid(), SIGKILL);
exit(0);
} else {
sleep(20);
}
return 0;
}
a) Error child cannot send a SIGKILL signal to parent.
b) Parent goes to the signal handler, prints handled the signal and goes back to sleep
c) Parent goes to the signal handler, prints handled the signal and exits
d) Parent exits without going to the signal handlerWhat is the difference between a process task and threads and what are the things that are acquired by the child process from the parent process?
