unix中得到昨天或更早日期的简便方法-变动时区法

获得昨天或更早或将来的时间 采用变动时区法spa </home/ismp>echo $TZ BEIST-8 </home/ismp>date Tue May 19 15:01:53 BEIST 2009 </home/ismp>export TZ=BEIST+16 </home/ismp>date Mon May 18 15:02:24 BEIST 2009 </home/ismp>export

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