Re: how-to: one command for repeat OR iterate shell OR bash command delay OR interval

[AD Marshall <admarshall@gmail.com>]

On Sunday 17 July 2005 12:35, John Kelly wrote:
> Hi,
> On Sun, 17 Jul 2005 11:57:34 +0700
> AD Marshall <admarshall@gmail.com> wrote:
> 
> > Is there already one bash command to do what the following script
> > does (poorly or incompletely), ie repeat "command" indefinitely
> > every "x" seconds:
> > 
> > #!/bin/sh
> > # usage: repeat [x] <command>
> > while true ; do $2 ; sleep $1 ; done
> > 
> > < rest deleted > 
> 
> The watch command might tbe what you want.
> Or maybe not, if you don't want anything output to screen.
>  
> Try man watch for details.
> 
<cut>
Ya.  Thanks.  I'd (long) forgotten about "watch".  

but, actually, i should be more specific. what i'm trying to do is 
something like this -- though i'm screwing up on quoting or something

am@[~]$ repeat 2 "echo $(cat /proc/loadavg ; date +%H:%m:%S)"
0.05 0.14 0.24 6/127 27711 12:07:29
0.05 0.14 0.24 6/127 27711 12:07:29
0.05 0.14 0.24 6/127 27711 12:07:29

as you can see, only one instance of load average and time are repeated.
i want a running record that can be redirected to a file

i just tinkered with backslashes, back-quotes, double-quotes and 
single-quotes, but all the quoting stuff still confuses me.

and, imho, i would have thought someone would have written a simple 
tool to do this ages ago.  no?

thanx again,
andi

-- 
AD Marshall
Tel:  +84 (0)903871313
eM:   admarshall@gmail.com
Web:  http://h0lug.sourceforge.net
Zone: ICT (IndoChina Time; GMT/UTC+7)
-
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs