[lug] Fwd: Simple counter?
tkil at scrye.com
Fri May 24 19:03:38 MDT 2013
"Jeffrey S. Haemer" <jeffrey.haemer at gmail.com> writes:
> I want something that returns me sequential integers. Â I ask it, I get
> a 1. Â Three more times? Â I get 2,3,4. Â You ask it, you get 5, I ask
> again, I get 6, and so on. Â If we both call it at the same time, we
> should *not* get the same number.
> Must persist over re-boots.
> Sort of like /dev/urandom, but less random. :-)
> We could all write simple programs to do this in lots of different
> ways, but doesn't it seem like there should already be some utility
> already out there that fits the bill?
Hm. It was surprisingly non-simple, but I suspect that unix
greybeards could find lots of room for improvement:
> Honest: this isn't "How can I write a simple program to do this?"
> Â It's, "Hasn't someone created a simple, standard utility that does
> this in the past 20 or 30 years?"
I wonder if 'seq' has a persistent mode somewhere...
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