* [9fans] Tip of the day...
@ 2007-11-26 9:18 lucio
2007-11-26 12:13 ` roger peppe
2007-11-26 12:48 ` erik quanstrom
0 siblings, 2 replies; 8+ messages in thread
From: lucio @ 2007-11-26 9:18 UTC (permalink / raw)
To: 9fans
Here's me being clever:
% echo dma on | tee /dev/sdC0/ctl > /dev/sdD0/ctl
Now, this can be extended by adding "tee" commands as required, but I
can't think of an elegant way to do this depending on the available
DMA-capable drives. I know that my shell programming tricks
repertoire is very limited, so I presume somebody out there will be
able to enhance the command in a scalable way (we're talking abount
only a few drives, really).
As given, it is all I have had a need for, so I'm quite pleased with
myself :-)
++L
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [9fans] Tip of the day...
2007-11-26 9:18 [9fans] Tip of the day lucio
@ 2007-11-26 12:13 ` roger peppe
2007-11-26 20:18 ` lucio
2007-11-26 12:48 ` erik quanstrom
1 sibling, 1 reply; 8+ messages in thread
From: roger peppe @ 2007-11-26 12:13 UTC (permalink / raw)
To: Fans of the OS Plan 9 from Bell Labs
> % echo dma on | tee /dev/sdC0/ctl > /dev/sdD0/ctl
i'm sure i'm being stupid here, but why is that better (or different) than:
% echo dma on > /dev/sdD0/ctl
% echo dma on > /dev/sdC0/ctl
?
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [9fans] Tip of the day...
2007-11-26 9:18 [9fans] Tip of the day lucio
2007-11-26 12:13 ` roger peppe
@ 2007-11-26 12:48 ` erik quanstrom
2007-11-26 17:18 ` Antonin Vecera
1 sibling, 1 reply; 8+ messages in thread
From: erik quanstrom @ 2007-11-26 12:48 UTC (permalink / raw)
To: 9fans
how about
#!/bin/rc
# turn dma on with abandon
# only sdata drives do this dma thing.
# only tweek drives on this system (hence #S).
d=`{awk '$2 == "ata" {print $1}'<'#S/sdctl'}
for(i in '#S'/^$d^*/ctl)
awk '$6 > 0 && $8 == 0 {print "echo dma on > " ENVIRON["i"]}'<$i |
sed 's/#/''#''/g' |
rc
- erik
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [9fans] Tip of the day...
2007-11-26 12:48 ` erik quanstrom
@ 2007-11-26 17:18 ` Antonin Vecera
0 siblings, 0 replies; 8+ messages in thread
From: Antonin Vecera @ 2007-11-26 17:18 UTC (permalink / raw)
To: Fans of the OS Plan 9 from Bell Labs
On Nov 26, 2007 1:48 PM, erik quanstrom <quanstro@quanstro.net> wrote:
> how about
>
> #!/bin/rc
> # turn dma on with abandon
>
> # only sdata drives do this dma thing.
> # only tweek drives on this system (hence #S).
> d=`{awk '$2 == "ata" {print $1}'<'#S/sdctl'}
>
> for(i in '#S'/^$d^*/ctl)
> awk '$6 > 0 && $8 == 0 {print "echo dma on > " ENVIRON["i"]}'<$i |
> sed 's/#/''#''/g' |
> rc
>
> - erik
>
/bin/dmaon
Antonin
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [9fans] Tip of the day...
2007-11-26 12:13 ` roger peppe
@ 2007-11-26 20:18 ` lucio
0 siblings, 0 replies; 8+ messages in thread
From: lucio @ 2007-11-26 20:18 UTC (permalink / raw)
To: 9fans
> % echo dma on > /dev/sdD0/ctl
> % echo dma on > /dev/sdC0/ctl
Because I often have to type it from the console and I find it
terribly irritating to have to repeat that "echo dma on". Weird, but
true. Just one of those things.
++L
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [9fans] tip of the day
2013-02-02 5:42 ` andrey mirtchovski
@ 2013-02-02 5:50 ` cinap_lenrek
0 siblings, 0 replies; 8+ messages in thread
From: cinap_lenrek @ 2013-02-02 5:50 UTC (permalink / raw)
To: 9fans
ah, thanks :)
--
cinap
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [9fans] tip of the day
2013-02-02 5:34 [9fans] tip " cinap_lenrek
@ 2013-02-02 5:42 ` andrey mirtchovski
2013-02-02 5:50 ` cinap_lenrek
0 siblings, 1 reply; 8+ messages in thread
From: andrey mirtchovski @ 2013-02-02 5:42 UTC (permalink / raw)
To: Fans of the OS Plan 9 from Bell Labs
> bind /net/tcp /proc
> ps
but the context in which it was introduced was different:
http://9fans.net/archive/2007/03/326
^ permalink raw reply [flat|nested] 8+ messages in thread
* [9fans] tip of the day
@ 2013-02-02 5:34 cinap_lenrek
2013-02-02 5:42 ` andrey mirtchovski
0 siblings, 1 reply; 8+ messages in thread
From: cinap_lenrek @ 2013-02-02 5:34 UTC (permalink / raw)
To: 9fans
mycroftiv just showed me a trick he learned from uriel:
bind /net/tcp /proc
ps
--
cinap
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2013-02-02 5:50 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2007-11-26 9:18 [9fans] Tip of the day lucio
2007-11-26 12:13 ` roger peppe
2007-11-26 20:18 ` lucio
2007-11-26 12:48 ` erik quanstrom
2007-11-26 17:18 ` Antonin Vecera
2013-02-02 5:34 [9fans] tip " cinap_lenrek
2013-02-02 5:42 ` andrey mirtchovski
2013-02-02 5:50 ` cinap_lenrek
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).