[Cialug] Calculating dates relative to today

[Shane Nehring]

This can also be done with the date command:

snehring at mamizou:~$ date -d "+90 days"
Thu May 30 14:44:07 CDT 2024

On Fri, Mar 1, 2024 at 12:40 PM kristau <kristau at gmail.com> wrote:

> Just discovered this nifty command-line hack to calculate dates relative to
> today instead of using some random date-calculating website or counting
> squares on an old fashioned wall-hanger:
>
> touch -d 'X day' test; stat test
>
> Examples:
>
> *90 days from today?*
> kristau at pop-thelio:~$ touch -d '90 day' test; stat test
>   File: test
>   Size: 0               Blocks: 0          IO Block: 4096   regular empty
> file
> Device: fc01h/64513d    Inode: 46138998    Links: 1
> Access: (0664/-rw-rw-r--)  Uid: ( 1000/ kristau)   Gid: ( 1000/ kristau)
>
> *Access: 2024-05-30 13:30:47.677889558 -0500Modify: 2024-05-30
> 13:30:47.677889558 -0500*
> Change: 2024-03-01 12:30:47.677657453 -0600
>  Birth: 2024-03-01 12:30:25.265369754 -0600
>
> *90 days ago?*
> kristau at pop-thelio:~$ touch -d '-90 day' test; stat test
>   File: test
>   Size: 0               Blocks: 0          IO Block: 4096   regular empty
> file
> Device: fc01h/64513d    Inode: 46138998    Links: 1
> Access: (0664/-rw-rw-r--)  Uid: ( 1000/ kristau)   Gid: ( 1000/ kristau)
>
> *Access: 2023-12-02 12:32:53.049962148 -0600Modify: 2023-12-02
> 12:32:53.049962148 -0600*
> Change: 2024-03-01 12:32:53.047266778 -0600
>  Birth: 2024-03-01 12:30:25.265369754 -0600
>
> Might not be new to you, but it was new to me so I thought I'd share!
> --
> Tired programmer
> Coding late into the night
> The core dump follows
> _______________________________________________
> Cialug mailing list
> Cialug at cialug.org
> https://www.cialug.org/cgi-bin/mailman/listinfo/cialug
>