http://qiita.com/7of9/items/b9c90e27593fae16252b
の続き
$ date --date="20161020 1 days ago" "+%Y%m%d"
20161019
More than 5 years have passed since last update.
http://qiita.com/7of9/items/b9c90e27593fae16252b
の続き
$ date --date="20161020 1 days ago" "+%Y%m%d"
20161019
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