Linux MCQ Questions & Answers | Computer Science

#!/bin/bash
read x
while [ $x != "hello" ]
do 
echo "Try to come out of the loop"
read x
done
echo "Welcome"
exit 0

#include<stdio.h>
#include<pthread.h>
#include<semaphore.h>
 
sem_t st;
void *fun_t(void *arg);
void *fun_t(void *arg)
{
    pthread_exit("Bye");
}
int main()
{
    pthread_t pt;
    void *res_t;
    if(pthread_create(&pt,NULL,fun_t,NULL) == -1)
        perror("pthread_create");
    if(sem_init(&st,1,2) != 0)
        perror("sem_init");
    if(pthread_join(pt,&res_t) == -1)
        perror("pthread_join");
    if(sem_destroy(&st) != 0)
        perror("sem_destroy");
    return 0;
}

#!/bin/sh
demo_function() {
    echo "Welcome to the Example"
    printf "World of Linux\n"
}
unset -f demo_function
demo_function
exit 0

#! /usr/bin/awk -f
BEGIN {
    print index("examveda","linux")
}