* generate series of strings
@ 2010-07-09 13:27 tartifola
2010-07-09 13:36 ` Guillaume Brunerie
0 siblings, 1 reply; 7+ messages in thread
From: tartifola @ 2010-07-09 13:27 UTC (permalink / raw)
To: zsh-users
Hi,
is there a way to obtain from the command line a series of strings like
(1:3) (4:6) (7:9)...
always with the same increment. I'm playing with 'seq' and 'sed' but
perhaps it's not the best approach.
Thanks,
A.
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: generate series of strings
2010-07-09 13:27 generate series of strings tartifola
@ 2010-07-09 13:36 ` Guillaume Brunerie
2010-07-09 13:42 ` tartifola
0 siblings, 1 reply; 7+ messages in thread
From: Guillaume Brunerie @ 2010-07-09 13:36 UTC (permalink / raw)
To: tartifola; +Cc: zsh-users
[-- Attachment #1: Type: text/plain, Size: 386 bytes --]
2010/7/9 <tartifola@gmail.com>
>
>
> Hi,
> is there a way to obtain from the command line a series of strings like
>
> (1:3) (4:6) (7:9)...
>
> always with the same increment. I'm playing with 'seq' and 'sed' but
> perhaps it's not the best approach.
> Thanks,
> A.
>
Hi,
You can use a for-loop :
for (( i = 0; i < 5; i++ ))
do
echo -n "($(( 3 * i + 1 )):$(( 3 * i + 3))) "
done
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: generate series of strings
2010-07-09 13:36 ` Guillaume Brunerie
@ 2010-07-09 13:42 ` tartifola
2010-07-09 14:05 ` Joke de Buhr
2010-07-09 20:26 ` Jérémie Roquet
0 siblings, 2 replies; 7+ messages in thread
From: tartifola @ 2010-07-09 13:42 UTC (permalink / raw)
To: zsh-users
On Fri, 9 Jul 2010 15:36:00 +0200
Guillaume Brunerie <guillaume.brunerie@gmail.com> wrote:
> 2010/7/9 <tartifola@gmail.com>
>
> >
> >
> > Hi,
> > is there a way to obtain from the command line a series of strings like
> >
> > (1:3) (4:6) (7:9)...
> >
> > always with the same increment. I'm playing with 'seq' and 'sed' but
> > perhaps it's not the best approach.
> > Thanks,
> > A.
> >
>
> Hi,
> You can use a for-loop :
>
> for (( i = 0; i < 5; i++ ))
> do
> echo -n "($(( 3 * i + 1 )):$(( 3 * i + 3))) "
> done
Thanks for your help, it works perfectly. Just a curiosity, any possible solution without a
loop for?
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: generate series of strings
2010-07-09 13:42 ` tartifola
@ 2010-07-09 14:05 ` Joke de Buhr
2010-07-09 20:26 ` Jérémie Roquet
1 sibling, 0 replies; 7+ messages in thread
From: Joke de Buhr @ 2010-07-09 14:05 UTC (permalink / raw)
To: zsh-users
[-- Attachment #1: Type: Text/Plain, Size: 1157 bytes --]
On Friday 09 July 2010 15:42:46 tartifola@gmail.com wrote:
> On Fri, 9 Jul 2010 15:36:00 +0200
>
> Guillaume Brunerie <guillaume.brunerie@gmail.com> wrote:
> > 2010/7/9 <tartifola@gmail.com>
> >
> > > Hi,
> > > is there a way to obtain from the command line a series of strings like
> > >
> > > (1:3) (4:6) (7:9)...
> > >
> > > always with the same increment. I'm playing with 'seq' and 'sed' but
> > > perhaps it's not the best approach.
> > > Thanks,
> > > A.
> >
> > Hi,
> > You can use a for-loop :
> >
> > for (( i = 0; i < 5; i++ ))
> > do
> >
> > echo -n "($(( 3 * i + 1 )):$(( 3 * i + 3))) "
> >
> > done
>
> Thanks for your help, it works perfectly. Just a curiosity, any possible
> solution without a loop for?
Actually there is a solution without loops. But it not as nice as a looping
solution (for, while, until, ...). You can use recursive functions as a loop-
replacement. But it's not as easy as a for-loop.
## recursive function
expand() {
(( $1 < 0 )) && return
print -n "$(expand $(($1 - 1))) ($((3 * $1 + 1)):$((3 * $1 + 3)))"
}
## call recursive function
expand 20
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^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: generate series of strings
2010-07-09 13:42 ` tartifola
2010-07-09 14:05 ` Joke de Buhr
@ 2010-07-09 20:26 ` Jérémie Roquet
2010-07-10 17:29 ` Bart Schaefer
1 sibling, 1 reply; 7+ messages in thread
From: Jérémie Roquet @ 2010-07-09 20:26 UTC (permalink / raw)
To: tartifola; +Cc: zsh-users
Hi,
2010/7/9 <tartifola@gmail.com>:
> Just a curiosity, any possible solution without a loop for?
Sure:
paste <() <(seq 1 3 7) <(seq 3 3 9) <() -d '(:)' | tr '\n' ' '
Best regards,
--
Jérémie
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: generate series of strings
2010-07-09 20:26 ` Jérémie Roquet
@ 2010-07-10 17:29 ` Bart Schaefer
2010-07-10 17:42 ` Jérémie Roquet
0 siblings, 1 reply; 7+ messages in thread
From: Bart Schaefer @ 2010-07-10 17:29 UTC (permalink / raw)
To: Jérémie Roquet; +Cc: tartifola, zsh-users
2010/7/9 Jérémie Roquet <arkanosis@gmail.com>:
> Hi,
>
> paste <() <(seq 1 3 7) <(seq 3 3 9) <() -d '(:)' | tr '\n' ' '
Hmm, for me that just chokes with
paste: -d: No such file or directory
I had to move the -d option to before the first <().
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: generate series of strings
2010-07-10 17:29 ` Bart Schaefer
@ 2010-07-10 17:42 ` Jérémie Roquet
0 siblings, 0 replies; 7+ messages in thread
From: Jérémie Roquet @ 2010-07-10 17:42 UTC (permalink / raw)
To: Bart Schaefer; +Cc: tartifola, zsh-users
2010/7/10 Bart Schaefer <schaefer@brasslantern.com>:
> 2010/7/9 Jérémie Roquet <arkanosis@gmail.com>:
>> paste <() <(seq 1 3 7) <(seq 3 3 9) <() -d '(:)' | tr '\n' ' '
> Hmm, for me that just chokes with
> paste: -d: No such file or directory
> I had to move the -d option to before the first <().
Maybe the paste version... I'm using GNU coreutils 7.4
But anyway, the man says "paste [OPTION]... [FILE]...", so it's better
to put -d first ;-)
--
Jérémie
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2010-07-10 17:43 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2010-07-09 13:27 generate series of strings tartifola
2010-07-09 13:36 ` Guillaume Brunerie
2010-07-09 13:42 ` tartifola
2010-07-09 14:05 ` Joke de Buhr
2010-07-09 20:26 ` Jérémie Roquet
2010-07-10 17:29 ` Bart Schaefer
2010-07-10 17:42 ` Jérémie Roquet
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