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Aye, aye, My Pi!

Posted 01-28-2013 at 08:45 AM by brianL

Been having tons of fun with my recently acquired Raspberry Pi, and a few ounces of frustration. So far I've got three distros to play with: Raspbian (based on Debian "Wheezy"), that came ready installed on an SD card; Arch Linux Arm, and SlackwareArm, which I've installed on SD myself. It's a bit particular about SD cards, the Pi. Some work, some don't. That was a source of some of the frustration. Another was because Arch has changed to systemd, which made some online info obsolete....
LQ 5k Club
Posted in Uncategorized
Views 12125 Comments 9 brianL is offline

rsh issue

Posted 01-27-2013 at 07:57 AM by vikky

[root@host ~]# rsh localhost uptime
connect to address port 544: Connection refused
Trying krb4 rsh...
connect to address port 544: Connection refused
trying normal rsh (/usr/bin/rsh)
Permission denied.
[root@host ~]#
[root@host~]# rpm -qa |grep rsh
[root@host ~]#
[root@host ~]# cat /etc/securetty
[root@host ~]# chkconfig...
LQ Newbie
Posted in Uncategorized
Views 4280 Comments 3 vikky is offline

Sockets -- A Chat Server with a non-blocking 'select' (i.e., GUI ready)

Posted 01-27-2013 at 06:47 AM by rainbowsally
Updated 09-04-2013 at 08:50 PM by rainbowsally (fix bad edit)

Sockets -- A Chat Server with a non-blocking 'select' (i.e., GUI ready)

[GUI-ready but no GUI in this version. Terminal only.]

Today's feature is
  • A chat server.
  • Non blocking 'select' (which we need for importing into an lqMiniTerm).
  • A web link to more generic sockets code that I wish I had found earlier.
  • Tarred up example code with makefile for all the code examples at bgnet.

Here's a chat-server you can use to communicate between folks on your computer...
Posted in Uncategorized
Views 596 Comments 0 rainbowsally is offline

lqNetDog Addon For Experimenters

Posted 01-24-2013 at 03:14 PM by rainbowsally
Updated 01-24-2013 at 03:18 PM by rainbowsally

lqNetDog Addon For Experimenters

Today's feature is
  • An addon for netdog-v1.2 to get and set connection properties.
  • Setting the blocking timout for the receiver (ans).

Remember, 'ans' (accept) needs to be online to receive the 'orig'inating connection, just like with a phone. Someone has to be there to accept the call or you'll never 'connect'.

We're currently simplifying sockets by combining two or three related functions in a single call using a common...
Posted in Uncategorized
Views 355 Comments 0 rainbowsally is offline

Sockets - The Black Box

Posted 01-23-2013 at 09:44 AM by rainbowsally

Today's feature:
  • A simple sockets debugging exercise.

Relax. It actually IS simple. You'll see.

You probably wouldn't be reading this if you didn't know how hard it is to find decent, simple example code.

Me too! And so there have been a few missteps in the previous entries (though they are adequate as demos), but it's all starting to shape up.

Yuh know, all I personally needed was a way to communicate between application so I could do stuff...
Posted in Uncategorized
Views 390 Comments 0 rainbowsally is offline


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