Mac在处理PDF文件时的权限问题
我不确定是否只有我一个人遇到了自大约六个月以来Mac的预览和文件权限方面的严重问题。您自己在同一台机器上创建的文件开始出现权限问题。这种情况也发生在Mac自家的Pages应用上。尽管确保文件对所有人都有完全的编辑权限，Mac的软件仍然随机生成文件权限错误。我希望尽管存在这些烦人的文件权限问题，Mac在用户友好性方面的声誉能够长久保持。
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I am not sure if I am alone in experiencing severe problems with Mac's Preview and file permissions since about 6 months. The files which you yourself have created on the same machine start giving problems with permissions. This happened with Mac's own Pages too. Despite making sure that the file has full edit permission for everyone, Mac's softwares are randomly generating file permission errors. I hope Mac's reputation for user friendliness remains intact for long despite such pesky file permission problems.