Plain C:
```
#include <time.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>

void main () {
  srand(time(NULL));
  int r = rand() % 3600;
  printf("\nSleeping for %d seconds\n", r);
  sleep(r);
}
```

Go: (go build -ldflags "-s -w" this_source.go) << будет работать везде т.к. статика
```
package main

import "fmt"
import "math/rand"
import "time"

func main() {
    rnd := time.Now().UTC().UnixNano()
    rand.Seed(rnd)
    rs  := rand.Intn(3600)
    fmt.Println("Sleeping for: ",rs," second(s)")
    time.Sleep(time.Duration(rs) * time.Second)
}
```