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<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_um6uo0gphjrbdsr647jhdtmgh6, O_RDWR) failed: No space left on device (28) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
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<b>Warning</b>:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
static void keepOnlyCommentedScreenClips(bool doIt) {
  Set<S> md5s = new HashSet(keys(thingsOnScreenDefinitions()));
  aggressivelyCollectPossibleMD5sInTextFile(glyphTeachLog(), md5s);
    
  for (File f : filesEndingWith(screenClipsDir(), ".png"))
    if (!thingsOnScreenDefinitions().containsKey(toLower(dropSuffix(".png", f.getName()))))
      if (doIt)
        moveFileToDirVerbose(f, javaxCachesDir("Deleted Screen Clips"));
      else
        print("Would delete " + f2s(f));
}