Wireless keyboard+mouse set uses only one usb port. Or you may connect using ssh. It it supports I guess buying a 32GB or 64GB micro SD card is more cost effective. Most micro SD cards should come with a SD size plastic adaptor.
Ср, 19 июн 2013, Ian Clark писал(а): > Good advice! I mean to experiment with all these storage methods. > > The RPi model B has two onboard USB ports, but they're both in use for a > keyboard and a mouse. The official user guide recommends use of a powered > hub, which will make it easy to try out USBsticks and my spare USB hard > drive. > > Having installed both Dyalog APL and J801, I've nearly filled up a 4GB SD > card (the recommended entry-level). I'm about to buy a 16GB SD card, but > only because I want the elbow room to experiment with embedded systems. A > J-powered robot is a priority. I shall write up my investigations on the > wiki. > > > On Tue, Jun 18, 2013 at 3:56 PM, Eric Iverson <[email protected]>wrote: > > > You refer to the size of the RPi SD card and I wanted to point out > > that RPi is a real linux system and you can easily mount USB cards or > > even terabyte external hard drives. In general programming cases it > > probably makes sense to install J (as well as ~temp ~user etc) on a > > USB stick and reservce the SD card for the essential service of boot > > and OS. For embedded stuff (like a robot controller) it makes sense to > > put it all on the SD card. > > > > > > > > On Mon, Jun 17, 2013 at 8:40 PM, Ian Clark <[email protected]> wrote: > > > I was hoping for that, but didn't like to ask. > > > > > > debian-handbook.pdf says there are numerous front-ends to apt, and > > mentions > > > synaptic and aptitude. But I see somewhere that these are not recommended > > > for the RPi, a somewhat low-powered platform. Haven't tried them, so I > > > can't verify that. > > > > > > There are several operating systems for the RPi but the leader for now is > > > Raspbian (aka debian wheezy linux), a debian derivative (as I believe is > > > ubuntu). It's stunning what can be run on the RPi, but so far the fancier > > > UIs are more in the nature of demos, and IMO not a sound basis for > > serious > > > work. (But educational users will say: isn't everything a "demo"?) > > > > > > AFAICT the answer to "does Raspian have such-and-such"? is: if it's meant > > > to run under debian, then: yes, probably -- provided you've got a big > > > enough SD card, and don't mind a long pause. But I guess for a long time > > to > > > come the real way to put the RPi to serious work will be via the Linux > > > command line. So newbies will expect to download and install J like this: > > > > > > $ sudo apt-get install j801 > > > > > > In general I'd say, the more like the way Python does it, the better for > > > its uptake. (Until J gets its own following and can innovate confidently > > in > > > the RPi world.) > > > > > > > > > On Mon, Jun 17, 2013 at 11:11 AM, bill lam <[email protected]> wrote: > > > > > >> It is hoped that J801 can enter Raspberry Pi's official > > >> software distribution so that users can use apt to install. > > >> > > >> In ubuntu there is a gui frontend for apt but I forgot its name, > > >> are there anything similar to that in raspi? > > >> > > >> Пн, 17 июн 2013, Ian Clark писал(а): > > >> > Sure, any way of getting the J tarball onto the RPi's SD card is ok. I > > >> just > > >> > opted for direct copying because my internet connection was flaky > > (it's > > >> > fine now). > > >> > > > >> > The "conventional" way of downloading a new app is to use "apt-get" > > in a > > >> > console session, which accesses the Pi Foundation's server. This does > > >> > require your product to be sniffed-over by the Foundation. J's tarball > > >> > sidesteps all that. I see however that www.dyalog.com are delivering > > >> Dyalog > > >> > APL for the RPi by hacking into "apt", a method that might be adapted > > to > > >> J. > > >> > The only advantage I can see (apart from doing things the done way) > > is to > > >> > allow apt-get to uninstall the app as well as install it. > > >> > > > >> > > > >> > On Mon, Jun 17, 2013 at 12:26 AM, bill lam <[email protected]> > > wrote: > > >> > > > >> > > I guess you can also download directly from raspi using its > > >> > > midori (untested). > > >> > > > > >> > > Вс, 16 июн 2013, Ian Clark писал(а): > > >> > > > Björn Helgason wrote: > > >> > > > > j for rapberry is available at the i801 download > > >> > > > > > >> > > > However did I miss it? ... > > >> > > > > > >> > > > Ah, I see Bill's only just announced it. ...And it all works for > > me, > > >> > > first > > >> > > > time! > > >> > > > And very nice it looks too (Well done, Team!) > > >> > > > > > >> > > > Out of hubris, I straightaway ran the Lab: "Displaying boxed nouns > > >> > > > containing Unicode" > > >> > > > ---to my astonishment and pleasure, it worked as it should. > > >> > > > > > >> > > > ---- > > >> > > > Just for the record, here are my steps to install j801 on my RPi: > > >> > > > > > >> > > > From: http://www.jsoftware.com/download/j801/ > > >> > > > downloaded: j801a_raspi32.tar.gz -onto my iMac desktop. > > >> > > > copied it to the /boot directory of RPi's SD card (which is all > > >> you > > >> > > see > > >> > > > of it using Finder) > > >> > > > (but it seems it doesn't matter where this tarball resides) > > >> > > > > > >> > > > Then, in LXSession of RPi ... > > >> > > > > > >> > > > $ sudo tar -xzf /boot/j801a_raspi32.tar.gz > > >> > > > > > >> > > > ...creates a directory: ~/j801 (equiv to: /home/pi/j801) > > >> > > > > > >> > > > $ j801/bin/jconsole > > >> > > > > > >> > > > ...runs a j session. Once started ... > > >> > > > > > >> > > > install 'all' > > >> > > > > > >> > > > ...installs everything required (including, I guess, the binaries > > for > > >> > > jqt) > > >> > > > > > >> > > > For convenience, I created an executable file: j and copied it to > > >> /bin > > >> > > ... > > >> > > > > > >> > > > $ echo -e '#! /bin/bash\n~/j801/bin/jqt' > j > > >> > > > $ chmod +x j > > >> > > > $ sudo cp j /bin/j > > >> > > > > > >> > > > Now I can run jqt by simply entering: j > > >> > > > > > >> > > > IanClark > > >> > > > > > >> > > > > > >> > > > On Sun, Jun 16, 2013 at 8:21 AM, Björn Helgason <[email protected] > > > > > >> > > wrote: > > >> > > > > > >> > > > > j for rapberry is available at the i801 download > > >> > > > > > > >> > > > > dyalog apl is also available > > >> > > > > > > >> > > > > -- > > >> > > > > -- > > >> > > > > You received this message because you are subscribed to the > > Google > > >> > > Groups > > >> > > > > "J Programming" group. > > >> > > > > To post to this group, send email to > > >> [email protected] > > >> > > > > To unsubscribe from this group, send email to > > >> > > > > [email protected] > > >> > > > > For more options, visit this group at > > >> > > > > http://groups.google.com/group/J-Programming > > >> > > > > > > >> > > > > > > >> > > > > www.jsoftware.com > > >> > > > > --- > > >> > > > > You received this message because you are subscribed to the > > Google > > >> > > Groups > > >> > > > > "J Programming" group. > > >> > > > > To unsubscribe from this group and stop receiving emails from > > it, > > >> send > > >> > > an > > >> > > > > email to [email protected]. > > >> > > > > For more options, visit > > https://groups.google.com/groups/opt_out. > > >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > >> ---------------------------------------------------------------------- > > >> > > > For information about J forums see > > >> http://www.jsoftware.com/forums.htm > > >> > > > > >> > > -- > > >> > > regards, > > >> > > ==================================================== > > >> > > GPG key 1024D/4434BAB3 2008-08-24 > > >> > > gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 > > >> > > > > ---------------------------------------------------------------------- > > >> > > For information about J forums see > > http://www.jsoftware.com/forums.htm > > >> > ---------------------------------------------------------------------- > > >> > For information about J forums see > > http://www.jsoftware.com/forums.htm > > >> > > >> -- > > >> regards, > > >> ==================================================== > > >> GPG key 1024D/4434BAB3 2008-08-24 > > >> gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 > > >> ---------------------------------------------------------------------- > > >> For information about J forums see http://www.jsoftware.com/forums.htm > > >> > > > ---------------------------------------------------------------------- > > > For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm -- regards, ==================================================== GPG key 1024D/4434BAB3 2008-08-24 gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
