Based on the UNIX date notation, note the use of double quotes surrounding the date variable. Other common formats are.
根据UNIX日期表示法，日期变量应该放在双引号中。
Old material was removed, and all that's left is good, up-to-date information that's immediately applicable to UNIX systems administration.
比较陈旧的内容被删除了，所剩下的都是一些有用的最新信息，可以立即应用于UNIX系统管理。
But today I won't talk more about UNIX and leave it to a later date.
今天就不多谈这个了，以后有时间一定会多说说。
But today I won't talk more about UNIX and leave it to a later date.
今天就不多谈这个了，以后有时间一定会多说说。
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