Comments for Anton Olsen

Comment on read a file with bash by Sysadmin

Sysadmin — Thu, 19 Apr 2012 14:07:11 +0000

Wow! Comment with file descriptor 9 (“read -u 9″) really saved my day! Big thanks. I’ve got “bash: fork: Resource temporarily unavailable” and no command could be run except bash builtins. This is very helpful and elegant way. You guy is a real bash guru So I have run this to find out the pid of java process and kill it to free resources:

for f in /proc/[0-9]* ; do
VALUE=”"
exec 9< $f/cmdline # assign file descriptor 9 to file
read -u 9 line
[[ $line =~ java ]] && echo "|$f|: |$line|"
exec 9<&- # free file descriptor 9
echo $VALUE
done

Comment on BASH: Split a string without ‘cut’ or ‘awk’ by aGuy

aGuy — Fri, 01 Jul 2011 04:16:23 +0000

a=”a b c d e”; arr=(${a// / }); echo ${arr[4]}

Comment on Nerf Vulcan Repair and Modification by Anton

Anton — Fri, 06 May 2011 02:55:13 +0000

@David,

The little circuit is not needed. I suspect it provides over current protection for the motor.

@Cheese,

I just screwed it down snug then cut away from the case plastic so it would go back together.

Comment on Nerf Vulcan Repair and Modification by Cheese

Cheese — Wed, 27 Apr 2011 01:20:09 +0000

Hey Anton excellent work. I own two old models and two new model Vulcans, and we’re modding the newer ones. There seems to be something keeping the Motor attached to the orange plastic ring that screws it in place (the one that you slip the screws thru that you say is 1/8th of an inch to far away). I was wondering if you also had this problem and how you overcame it.

Comment on Nerf Vulcan Repair and Modification by David

David — Mon, 21 Mar 2011 23:15:12 +0000

The is a wire soldered to the motor and the computer silicon chip. Is that important? If so, what is it and how did you use it on your new motor?

Comment on LED Throwies by Tragic O'Hara

Tragic O'Hara — Sat, 05 Mar 2011 18:07:32 +0000

Hey,
I’m thinking about using some LED throwies for a stunt over here in Scotland.
Your post was a lot of help.

Im an avid of all street art and this is something you don’t see over in the UK so I’m definatley going to get involved….

All the best
and thanks

Tragic

Comment on using a bash ‘for loop’ to wget by Jabba Laci

Jabba Laci — Mon, 31 Jan 2011 06:22:35 +0000

Another way is to collect the URLs in a file, say down.txt, then download everything in it with “wget -i down.txt”.

Comment on Nerf Vulcan Repair and Modification by woink

woink — Thu, 23 Dec 2010 08:30:27 +0000

Hey was just wondering how to remove the white gear attached to the motor – mine seems stuck ><.

thank you!

Comment on Nerf Vulcan Repair and Modification by woink

woink — Thu, 23 Dec 2010 04:44:23 +0000

hmm do you know how to remove the gear stuck to the motor? thanks!

Comment on Nerf Vulcan Repair and Modification by Norrec

Norrec — Wed, 22 Dec 2010 22:21:56 +0000

Hey Anton,

Have you made any improvements yet?
When upgrading my spring to a higher load and with AR removal, my Rate of fire has dropped. Since I use 15-16 volts to stock motor.
I plan to upgrade my spring to an even higher load and change the gears to aluminum parts, as well as the plunger, etc.

But an even higher load spring would reduce my RoF as well…
Would I need a motor with higher RPM in order to compensate?
Do higher voltages usually equate to a higher degree of RPM?

Your article was a very interesting read, thanks