How to write to shared memory?

2010-10-20 Thread Cameron, Barrett
Hi,
I have a bash loop which I have significantly sped up by using:

for ((i=0;i=Z;i++)); do echo $i; done

instead of other format for loops as well as using internal math like:

NEWX=$(($EAST+$DX))

Instead of let or expr. This process is now heaps faster but I want to
echo the data to a file but not have to write to a file on each loop
cycle as it slows it down.

On native linux you would write:

echo $NEWX  /dev/shm/new 

and then at the end of all the loops at the end of the script write to a
file with:

cat /dev/shm/new  $OUT

-- Finally to the question. How do you do this with Cygwin?? 

Cheers,

Barrett.

--
Problem reports:   http://cygwin.com/problems.html
FAQ:   http://cygwin.com/faq/
Documentation: http://cygwin.com/docs.html
Unsubscribe info:  http://cygwin.com/ml/#unsubscribe-simple



Re: How to write to shared memory?

2010-10-20 Thread Bengt-Arne Fjellner

On 2010-10-20 08:21 , Cameron, Barrett wrote:

Hi,
I have a bash loop which I have significantly sped up by using:

for ((i=0;i=Z;i++)); do echo $i; done



Does

for ((i=0;i=Z;i++)); do echo $i; done  $OUT

Help? It at least avoids reopening the file every time.



instead of other format for loops as well as using internal math like:

NEWX=$(($EAST+$DX))

Instead of let or expr. This process is now heaps faster but I want to
echo the data to a file but not have to write to a file on each loop
cycle as it slows it down.

On native linux you would write:

echo $NEWX  /dev/shm/new

and then at the end of all the loops at the end of the script write to a
file with:

cat /dev/shm/new  $OUT

--  Finally to the question. How do you do this with Cygwin??

Cheers,

Barrett.

--
Problem reports:   http://cygwin.com/problems.html
FAQ:   http://cygwin.com/faq/
Documentation: http://cygwin.com/docs.html
Unsubscribe info:  http://cygwin.com/ml/#unsubscribe-simple




--
Problem reports:   http://cygwin.com/problems.html
FAQ:   http://cygwin.com/faq/
Documentation: http://cygwin.com/docs.html
Unsubscribe info:  http://cygwin.com/ml/#unsubscribe-simple