使用bash在YYYYMMDDHHMMSS中增加日期的小时/分钟/秒 [英] Increment hours/minutes/seconds of date in YYYYMMDDHHMMSS using bash

问题描述

假设今天的日期格式为YYYYMMDDHHMMSS，例如20160720152654.我想添加几小时，几分钟或几秒钟的日期.

Suppose todays' date is formatted to YYYYMMDDHHMMSS such as 20160720152654. I would want to add hours or minutes or seconds to date.

添加1小时应将日期更改为20160720162654加1分钟应将日期更改为20160720152754加1秒应将日期更改为20160720152655

Add 1 hour should change date to 20160720162654 Add 1 minute should change date to 20160720152754 Add 1 second should change date to 20160720152655

这似乎给了我错误的结果

This seems to give me incorrect results

d = 日期+％Y％m％d％H％M％S pd = $((($ d +($ d％(15 * 60)))))回声$ d回声$ pd

d=date +%Y%m%d%H%M%S pd=$(($d + ($d % (15 * 60)))) echo $d echo $pd

输出2016072015514120160720155482

Output 20160720155141 20160720155482

推荐答案

您可以操纵输入以将其传递给 date -d :

You can manipulate input to pass it to date -d:

s='20160720162654'

# add 1 minute
date -d "${s:0:8} ${s:8:2}:${s:10:2}:${s:12:2} +1 min" '+%Y%m%d%H%M%S'    
20160720112754

# add 1 sec
date -d "${s:0:8} ${s:8:2}:${s:10:2}:${s:12:2} +1 sec" '+%Y%m%d%H%M%S'    
20160720112655

# add 1 hour
date -d "${s:0:8} ${s:8:2}:${s:10:2}:${s:12:2} +1 hour" '+%Y%m%d%H%M%S'    
20160720122654

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