From: DervishD <zsh@dervishd.net>
To: Zsh Users <zsh-users@sunsite.dk>
Subject: Re: Sorting file names randomly
Date: Sat, 23 Jul 2005 23:26:57 +0200 [thread overview]
Message-ID: <20050723212657.GA744@DervishD> (raw)
In-Reply-To: <20050723194240.GA32416@DervishD>
Hi all :) and sorry for self-replying...
* DervishD <zsh@dervishd.net> dixit:
> A time ago (zsh-workers/19128) Bart explained me how to sort
> randomly a group of files. Namely, the solution is this:
>
> array=(*(e:'reply=%0(l..$RANDOM)$REPLY:))
> array=(${(%)array)
[...]
> Well, the problem is that the above doesn't work if you have to
> use more than one pattern, because the '(e' construct will affect
> only the last element. Since I don't know how many elements will be
> present, I cannot use an '(e' construct on each element. Moreover it
> would be very messy.
I've written a not very good solution that at least works:
function shuffle () {
emulate -L zsh
setopt nullglob globdots rcexpandparam
RANDOM=`date +%s`
[[ $# -eq 0 ]] && set '*'
reply=($~*(e:'REPLY="${(l.5..0.)RANDOM} $REPLY"':))
reply=(${(o)reply})
reply=(${reply/#????? /})
print -l $reply
return 0
}
alias shuffle="noglob 'shuffle'"
The function returns the list in the 'reply' array parameter, and
prints it on stdout.
If anybody can make it better/shorter, suggestions are welcome ;)
The three array assignments can be probably shortened.
Raúl Núñez de Arenas Coronado
--
Linux Registered User 88736 | http://www.dervishd.net
http://www.pleyades.net & http://www.gotesdelluna.net
It's my PC and I'll cry if I want to...
next prev parent reply other threads:[~2005-07-23 21:24 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-23 19:42 DervishD
2005-07-23 21:26 ` DervishD [this message]
2005-07-24 6:44 ` Bart Schaefer
2005-07-24 7:39 ` DervishD
2005-07-24 8:37 ` DervishD
2005-07-24 8:40 ` DervishD
2005-07-24 10:32 ` Bart Schaefer
2005-07-25 6:47 ` Bart Schaefer
2005-07-25 13:15 ` DervishD
2005-07-25 13:27 ` DervishD
2005-07-25 17:46 ` Bart Schaefer
2005-07-25 18:10 ` DervishD
2007-11-19 4:21 ` Clint Adams
2007-11-19 8:57 ` Bart Schaefer
2007-11-19 9:08 ` Bart Schaefer
2007-11-19 11:44 ` Clint Adams
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