delay bash command code example
Example 1: sh wait 10 seconds
sleep .5 # Waits 0.5 second.
sleep 5 # Waits 5 seconds.
sleep 5s # Waits 5 seconds.
sleep 5m # Waits 5 minutes.
sleep 5h # Waits 5 hours.
sleep 5d # Waits 5 days.
Example 2: linux sleep with exec /bin/sleep
int pid= fork();
if (pid==0) { // child
execl("/bin/sleep", "sleep", argv[1], NULL); // argv[1] is the sleeptime
perror("execl");
return EXIT_FAILURE;
}
if (waitpid(pid,NULL,0)<0) {
perror("waitpid");
return EXIT_FAILURE;
}