Roundtable

roundtable@muug.ca

2555 discussions

Perl
by Bill Newman 14 Jan '04

14 Jan '04

Thanks to Sean for his Perl talk on Jan 13. I would like to recommend: Perl: The Programmer's Companion by Nigel Chapman, published by Wiley This book is aimed at programmers and focuses on how you can use Perl to work in familiar "programming idioms", i.e. get the job done. It makes a useful contrast to Larry Wall's "spare me no details" approach. He uses formal syntax diagrams for precision. By page 68 he has described enough of the language to launch into an example of a "single pass recursive descent compiler". To wit, the translator that converts his personal notation for syntax diagrams into the LaTeX notation that drives Mark Wooding's package for typesetting syntax diagrams. Obscure enough for you? :=) It's actually not a difficult read. He uses the same clear "what you need to know" style to go through Data Structures, Objects, Modules, and other Perl topics that have more detail and variability than you need to know all at once. Not a reference work but an excellent introduction to the power of Perl. Bill _______________________________________________________________ Bill Newman wrnewman(a)mb.sympatico.ca Winnipeg Manitoba

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Perl presentation online
by Sean A. Walberg 14 Jan '04

14 Jan '04

Hi, I've posted a PDF of my presentation from last night: http://ertw.com/~sean/perl.pdf There was a bit of talk about Perl's handling of scalars, are they a string, integer or float? The article I was referring to is http://www.perladvent.org/2003/16th/ Sean -- Sean A. Walberg <sean(a)ertw.com> http://www.ertw.com

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Shirt
by millward 14 Jan '04

14 Jan '04

I could not make it to tonight's meeting. Could I obtain the shirt I ordered at the next meeting?

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MUUG Shirts
by Shawn Wallbridge 09 Jan '04

09 Jan '04

Just a reminder, the MUUG shirts will be ready for the next meeting, so if you ordered one, bring some money. The shirts are $40, and we took a $20 deposit, so you will need another $20. thanks shawn

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MUUG Meeting, Jan 13, 7:30PM -- Perl
by gedetil＠cs.umanitoba.ca 06 Jan '04

06 Jan '04

[Posted to man.unix.general and other news groups] ------ Forwarded Article <bterb2$ekp$1(a)canopus.cc.umanitoba.ca> ------ From gedetil(a)cs.umanitoba.ca (Gilbert E. Detillieux) The Manitoba UNIX User Group (MUUG) will be holding its next monthly meeting on Tuesday, January 13. The meeting topic for this month is as follows: Perl This month's presentation, unimaginatively titled "Perl", is a brief walkthrough of the language's features and applications. The talk will focus on the places that Perl differs from traditional languages, and the features that make it worth learning. Sean Walberg will be presenting this topic. The group holds its general meetings at 7:30 PM on the second Tuesday of every month from September to June. (There are no meetings in July and August.) Meetings are open to the general public; you don't have to be a MUUG member to attend. ********************************************************************** Please note our new meeting location: The IBM offices, at 400 Ellice Ave. (between Edmonton and Kennedy). When you arrive, you will have to sign in at the reception desk, and then wait for someone to take you (in groups) to the meeting room. Please try to arrive by about 7:15 PM, so the meeting can start promptly at 7:30 PM. Don't be late, or you may not get in. Limited parking is available for free on the street, or in a lot across Ellice from IBM, for $1.00 for the evening. Indoor parking is also available nearby, at Portage Place, for $2.00 for the evening. ********************************************************************** For more information about MUUG, and its monthly meetings, check out their Web server: http://www.muug.mb.ca/ Also note that MUUG maintains two mailing lists, called "muug-announce" and "roundtable". If you're not already on these lists, we encourage you to subscribe now: http://www.muug.mb.ca/mailman/listinfo/ The "muug-announce" list is used for monthly meeting announcements (such as this one) as well as other important announcements of interest to MUUG members. The "rountable" list is meant to be a forum for follow-ups to topics discussed at the meetings, or for round-table-style discussion on other topics that come up between meetings. Of course, for this to be effective, we need to reach a certain critical mass. So, please subscribe, and stay involved! -- Gilbert E. Detillieux E-mail: <gedetil(a)muug.mb.ca> Manitoba UNIX User Group Web: http://www.muug.mb.ca/ P.O. Box 130, St-Boniface Phone: (204)474-8161 Winnipeg, MB, CANADA R2H 3B4 Fax: (204)474-7609 ------ End of Forwarded Article

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Public WiFi access points
by John Lange 03 Jan '04

03 Jan '04

Can anyone recommend an coffee shop or eating establishment that is centrally located, has public WiFi access, and has good free parking? Also, does anyone know of a site that lists publicly available WiFi access points in Winnipeg? Thanks. -- John Lange BigHostBox.com (204) 885 0872

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LCD character displays?
by Sean A. Walberg 29 Dec '03

29 Dec '03

Has anyone played around with LCD character displays under Linux, perhaps with something like LCDProc? (I'm talking 2x24 character and the like, not LCD display panels) If so, any recommendations on serial LCDs? I've been playing with Hitachi 44780 displays and microcontrollers lately, but it's a parallel display and LCDProc's interfaces to it are through parallel ports. There are several serial LCD products out there, and I'm trying to weigh the work of building a serial interface to it vs just buying a serial LCD. For those that have no idea what I'm talking about, this would let you display things like load average and memory utilization on the front of a headless computer. Throw in some switches, and you can safely power down a box without having to ssh in or fiddle with KVMs. Cobalts have them, you can even fiddle with IP addresses from the front panel. Tx, Sean -- Sean A. Walberg <sean(a)ertw.com> http://www.ertw.com

3 2

Data recovery
by John Lange 23 Dec '03

23 Dec '03

I have a hard drive that sort of died recently. For the most part it was working normally but whenever I tried to "cd /" it would stall for a long period of time. This got worse and worse until I finally made a fatal mistake.... Not suspecting the drive was the problem and in a moment of weakness I decided to reboot to try and fix the problem... It never worked again... I will attribute my poor judgement to having spent so much time in the past working with "other" OSes where rebooting is your main trouble-shooting tool. Sometimes you have uncontrolled flash-backs and fall into old habits... That being said, while I do have backups of all my most critical items there was some other things I wouldn't mind recovering if possible. The drive is still recognized in the BIOS etc. but it simply won't mount under linux. Error is: mount: wrong fs type, bad option, bad superblock on /dev/hdc1, or too many mounted file systems I've also tried mount with the "mount -o sb=xxx" option specifying some alternative superblocks as determined by calling "mke2fs -n /dev/hdc1" all to no avail. Seems likely that the drive is 100% dead at this point but if anyone has any tricks they could pass along I'd like to give them a whirl. I didn't find much by the way of google. Very much appreciate if anyone has any ideas. On an entirely related note, does anyone have a good script (possibly using rsync) for keeping files up-to-date between a desktop and a laptop by way of a central server ? Thanks. -- John Lange BigHostBox.com (204) 885 0872

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IP Masquerading for USB ethernet
by Brian Doob 21 Dec '03

21 Dec '03

I have a Compaq iPaq with Linux installed on it (see http://opie.handhelds.org/), and it is connected to my Gentoo Linux box with USB ethernet. The Gentoo box is connected to an Ovislink router (with a DHCP server) via regular ethernet. I want the hanheld to be able to talk to the net via the Gentoo box. I have not been able to get IP masquerading to work under Gentoo. I would prefer to have the handheld get its IP address from the router (and have the Gentoo box just forward the packets). Does anyone know how to get this working? Here is some info about my situation: # ifconfig eth0 eth0 Link encap:Ethernet HWaddr 00:20:ED:B8:91:55 inet addr:192.168.1.1 Bcast:255.255.255.255 Mask:255.255.255.0 UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3340 errors:0 dropped:0 overruns:0 frame:0 TX packets:3557 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:3330687 (3.1 Mb) TX bytes:448922 (438.4 Kb) Interrupt:11 # ifconfig usb0 usb0 Link encap:Ethernet HWaddr 4E:DC:69:01:CA:EF inet addr:192.168.1.200 Bcast:192.168.1.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:25 errors:0 dropped:0 overruns:0 frame:0 TX packets:7 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:980 (980.0 b) TX bytes:574 (574.0 b) # iptables -t nat -I POSTROUTING -j MASQUERAQDE -s 192.168.1.3/16 iptables v1.2.8: Couldn't load target `MASQUERAQDE':/lib/iptables/libipt_MASQUERAQDE.so: cannot open shared object file: No such file or directory # uname -a Linux proton 2.4.23-ck1 #1 Thu Dec 4 19:21:52 CST 2003 i686 AMD Athlon(tm) XP 1800+ AuthenticAMD GNU/Linux This is how I bring up the network to the PDA: modprobe uhci sleep 1 insmod usbnet ifconfig usb0 192.168.1.200 netmask 255.255.255.0 pointopoint 192.168.1.3 up route add -host 192.168.1.3 usb0 If anyone is interested in the really gritty details, I have attached the config file for my kernel. Does anyone know what I need to do? Thanks. -Brian

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IBM Linux commercial
by John Lange 15 Dec '03

15 Dec '03

On another local linux mailing list, someone posted this link to a IBM commercial for Linux which was apparently spotted on CNN. http://www.ibm.com/open/ I feel this is pretty significant news. A large marketing campaign from a very large and credible source designed to bring Linux to "top of mind". Apologies for the cross posting for those of you who are also members of the other list. John Lange

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