A script to run blockfinder (patched to run in cron without requiring a TTY), and then report the daily differences via email to the user running the script.

blockfinder-ca-asns.bash

#!/bin/bash

TODAY=`date "+%Y-%m-%d"`

case $OSTYPE in
  darwin*)  YESTERDAY=`date -v -1d "+%Y-%m-%d"` ;;
  linux*)   YESTERDAY=`date --date="yesterday" "+%Y-%m-%d"` ;;
  *bsd*)    YESTERDAY=`date -v -1d "+%Y-%m-%d"` ;;
  *)        echo "unknown: $OSTYPE" ;;
esac

cd ~/dev/github/blockfinder

./blockfinder -i > /dev/null
./blockfinder -v -t ca:asn > ca-asn-$TODAY.txt
/usr/bin/diff -u ca-asn-$YESTERDAY.txt ca-asn-$TODAY.txt |\
mail -s "[ASN-diffs] Canada $TODAY" `whoami`

blockfinder.patch

diff --git a/blockfinder b/blockfinder
index a53de9f..b5aaa81 100755
--- a/blockfinder
+++ b/blockfinder
@@ -524,23 +524,7 @@ class DownloaderParser:
     def _update_progress_bar(self, received_bytes, expected_bytes,
             seconds_elapsed):
         """ Write a progress bar to the console. """
-        if is_win32:
-          rows    = 100 # use some WinCon function for these?
-          columns = 80  # but not really important.
-          EOL = "\r"
-        else:
-          rows, columns = list(map(int, os.popen('stty size', 'r'
-              ).read().split()))
-          EOL = "\x1b[G"
-        if seconds_elapsed == 0:
-            seconds_elapsed = 1
-        percent_done = float(received_bytes) / float(expected_bytes)
-        caption = "%.2f K/s" % (received_bytes / 1024 / seconds_elapsed)
-        width = columns - 4 - len(caption)
-        sys.stdout.write("[%s>%s] %s%s" % (
-                "=" * int(percent_done * width),
-                "." * (width - int(percent_done * width)), caption, EOL))
-        sys.stdout.flush()
+        pass
 
     def check_rir_file_mtimes(self):
         """ Return True if the mtime of any RIR file in our cache directory