+
+ // Check to make sure required env variables are set
+ if(getenv("backupdbin") == NULL || getenv("backupdbout") == NULL || getenv("blocksize") == NULL || getenv("availsizemb") == NULL)
+ {
+ cerr << "Required environment variables are not set. Exiting." << endl;
+ return 1;
+ }
+
+ // Setup our bytes_in_block value
+ bytes_in_block = atoll(getenv("blocksize"));
+