1  #include "coreutils.h"
 2  #include <services/system.h>
 3  
 4  #include <stdio.h>
 5  
 6  int programs::coreutils::cmd_free(int argc, char **argv) {
 7    (void)argv;
 8    if (argc != 1) { printf("usage: free\n"); return 1; }
 9  
10    SystemQuery query = {
11      .preferred_storage = StorageKind::LittleFS,
12      .snapshot = {},
13    };
14    services::system::accessSnapshot(&query);
15    printf("heap total: %u\nheap free:  %u\nheap used:  %u\n",
16           query.snapshot.heap_total, query.snapshot.heap_free,
17           query.snapshot.heap_total - query.snapshot.heap_free);
18    return 0;
19  }