Alert after command has finished, lifehack.

alert.c

/*
 * Small hack I usually keep around, mainly use it like so (after placing it in my path)
 * ./big_task_that_takes_a_while_to_run ; alert
 * Once the task is done a small sound will be played letting you know its finished and you will no longer have to
 * keep tabbing back to your console window to check if your process has finished or not. 
 * Released in public domain (all 5 rows of it)
*/
#include <stdio.h>

int main(void) {
  printf("\a");
}