From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 8549 invoked by alias); 13 Nov 2017 00:15:44 -0000 Mailing-List: contact zsh-users-help@zsh.org; run by ezmlm Precedence: bulk X-No-Archive: yes List-Id: Zsh Users List List-Post: List-Help: List-Unsubscribe: X-Seq: 22972 Received: (qmail 9056 invoked by uid 1010); 13 Nov 2017 00:15:44 -0000 X-Qmail-Scanner-Diagnostics: from 195.159.176.226 by f.primenet.com.au (envelope-from , uid 7791) with qmail-scanner-2.11 (clamdscan: 0.99.2/21882. spamassassin: 3.4.1. Clear:RC:0(195.159.176.226):SA:0(-0.9/5.0):. Processed in 6.674106 secs); 13 Nov 2017 00:15:44 -0000 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on f.primenet.com.au X-Spam-Level: X-Spam-Status: No, score=-0.9 required=5.0 tests=BAYES_00, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, RDNS_NONE autolearn=no autolearn_force=no version=3.4.1 X-Envelope-From: gcszu-zsh-users@m.gmane.org X-Qmail-Scanner-Mime-Attachments: | X-Qmail-Scanner-Zip-Files: | X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: zsh-users@zsh.org To: zsh-users@zsh.org From: Emanuel Berg Subject: Re: random once but not twice Date: Mon, 13 Nov 2017 01:15:21 +0100 Message-ID: <86mv3r2fvq.fsf@zoho.com> References: <86k1yw63u0.fsf@zoho.com> <86bmk85u6b.fsf@zoho.com> <867euw5twc.fsf@zoho.com> <86375k5t8w.fsf@zoho.com> <20171112190806.7f2cf68a@ntlworld.com> Mime-Version: 1.0 Content-Type: text/plain X-Complaints-To: usenet@blaine.gmane.org User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4 (gnu/linux) Mail-Copies-To: never Cancel-Lock: sha1:P+//MHfTvx9ZX0Dk/bSui7AeT7Q= 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