From: Emanuel Berg <moasen@zoho.com>
To: zsh-users@zsh.org
Subject: Re: random once but not twice
Date: Mon, 13 Nov 2017 01:15:21 +0100 [thread overview]
Message-ID: <86mv3r2fvq.fsf@zoho.com> (raw)
In-Reply-To: <20171112190806.7f2cf68a@ntlworld.com>
Peter Stephenson wrote:
> You can also work around with the following
> rand48 function.
>
> (rand48; print $REPLY) (rand48; print $REPLY)
Works! Only I don't understand this syntax.
What does it do?
seed=$(<$file)
and
print $seed >$file
I suppose is some intentional circular
short-circuit to generate gibberish data?
BTW you could benefit from a spellchecker :)
Here is a spell-checked version of your comment
# Generate a 48-bit pseudo-random number as
# a floating point value between 0 and 1 in
# $REPLY.
#
# This version is slow but works around the fact
# that the random number seed doesn't propagate
# back from a subshell by storing the seed in
# a file.
#
# You can specify a file name, else
# ${ZDOTDIR:-~}/.zsh-rand48-seed is used, but
# if using the default be careful about
# simultaneous accesses from multiple shells.
Thanks :)
--
underground experts united
http://user.it.uu.se/~embe8573
next prev parent reply other threads:[~2017-11-13 0:15 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-11 18:57 Emanuel Berg
2017-11-11 21:52 ` Mikael Magnusson
2017-11-11 22:26 ` Emanuel Berg
2017-11-11 22:32 ` Emanuel Berg
2017-11-11 22:46 ` Emanuel Berg
2017-11-12 19:08 ` Peter Stephenson
2017-11-12 20:02 ` Emanuel Berg
2017-11-12 20:15 ` Bart Schaefer
2017-11-12 20:18 ` Emanuel Berg
2017-11-13 0:15 ` Emanuel Berg [this message]
2017-11-13 4:56 ` Bart Schaefer
2017-11-13 5:07 ` Emanuel Berg
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