今天是2012-04-22 date -d "+1 day" +%Y-%m-%d shell脚本中执行：$(date -d "+1 day" "+%Y-%m-%d") 2012-04-23 date -d "-1 day" +%Y-%m-%d 2012-04-21 date -d "2012-04-10 -1 day " +%Y-%m-%d 2012-04-09 date -d "2012-04-10 +1 day " +%Y-%m-%d 2012-04-11 date -d "-1 week " +%Y-%m-%d 2012-04-15 date -d "+1 week " +%Y-%m-%d 2012-04-29 date -d "+1 month " +%Y-%m-%d 2012-05-22 date -d "-1 month " +%Y-%m-%d 2012-03-22 date -d "-1 year " +%Y-%m-%d 2011-04-22 date -d "+1 year " +%Y-%m-%d 2013-04-22
日期作为参数，以下两种写法一致： date1=$(date) date2=$(date -d "$date1 -1 day" '+%Y-%m-%d') date3=$(date -d "$(date)" '+%Y-%m-%d') date1="2016-11-17" date2=$(date -d "$date1 -1 day" '+%Y-%m-%d') date3=$(date -d "$date1" '+%Y-%m-%d')
echo $date1 echo $date2 echo $date3
原贴地址：http://blog.sina.com.cn/s/blog_ad6555610101b5ud.html
