Re: Command-line-interface (CLI) calculator to work out the difference between 2 dates
Ron Johnson <ron.l.johnson@cox.net>:
> On 08/24/08 11:32, Rick Pasotto wrote:
> >
> > Why pipe it to bc? Keep it in the shell:
> >
> > $ echo $[$[$(date -d 20090824 +%s) - $(date -d 20080724 +%s)] / 86400]
> > 396
>
> [snip]
>
> One stylistic reason for piping to bc is that some people think that
> bash's $[] syntax gets too hard to read if you nest it too much.
I've been running *nix on my home boxes since '93, and I've never even
seen that syntax. That's a bashism, I hope?
I do own, and have studied, O'Really's Learning the bash shell.
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