Roundtable February 2003

roundtable@muug.ca

3 participants
5 discussions

CD, VCD & DVD Burning
by John Lange 03 Dec '03

03 Dec '03

At a recent MUUG meeting someone was asking about burning VCDs (Video CDs). I believe the consensus at the meeting was that burning under Linux was comprised of a hodge-podge of various command line tools for converting video formats and burning making it quite difficult at best. I recently stumbled on the following software: http://www.k3b.org/ which seems to bring everything under one roof and claims to do CD, VCD, and DVD burning all in one application (it does not appear to be just a GUI front end to command line tools). However, I do not currently have a burner to test it with so I was hoping someone from the group could give it a whirl and report back on success? Thanks. -- John Lange BigHostBox.com ltd (204) 885 0872 Toll free: 1-866-690-8297

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Unix sysadmin
by Bill Reid 12 Feb '03

12 Feb '03

Merlin (Dept of Education) will be posting a high-end pay classification Solaris admin position for their province wide email/portal project. Should be in this Sat's Free Press. ____________________________________________________________ Bill Reid Page 993 Dorchester Ave. Network Consultant, Retired 935-1432 Winnipeg, MB R3M 0P9 University of Manitoba (204) 452-6590

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Re: [RndTbl] Using math routines (math.h, header files) in C programs.
by gedetil＠cs.umanitoba.ca 04 Feb '03

04 Feb '03

According to Ihor Jakowec: > I was attempting to use the math routines of the libc library. > The following program (listed below), would not compile. > A shell session, showing error messages, follows the source > code. > > Source code: > #include <stdio.h> > #include <math.h> > > int main (void) > { > printf("The square root of 2.0 is: % .6f\n", sqrtf(2.0)); > } OK, first problem I can see is the function should be called "sqrt", and not "sqrtf". That's the way it's defined on my system anyway. It's best to always check the man pages for the functions first, to be sure about their names and expected argument types. > Shell session showing error message: > $ gcc -o example example.c > /tmp/cc4fVMFv.o: In function `main': > /tmp/cc4fVMFv.o(.text+0x12): undefined reference to `sqrtf' > collect2: ld returned 1 exit status > $ It may also be necessary to include the "-lm" option explicitly, at the end of the gcc command line, to have it link against the math library. I don't think gcc will link against that library by default. > Setting path and and gcc environment variables did not > make the program compile. Is this feature (math.h), fully > implemented or, unsupported or, depreciated? Please, tell > me what to do to get this program to work. No, setting path and environment variables won't help here. You'd only have to do that if the libraries you wanted to use weren't in the usual library search path. Hope the above helps. -- Gilbert E. Detillieux E-mail: <gedetil(a)cs.umanitoba.ca> Dept. of Computer Science Web: http://www.cs.umanitoba.ca/~gedetil/ University of Manitoba Phone: (204)474-8161 Winnipeg, MB, CANADA R3T 2N2 Fax: (204)474-7609

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Using math routines (math.h, header files) in C programs.
by Ihor Jakowec 04 Feb '03

04 Feb '03

I was attempting to use the math routines of the libc library. The following program (listed below), would not compile. A shell session, showing error messages, follows the source code. Source code: #include <stdio.h> #include <math.h> int main (void) { printf("The square root of 2.0 is: % .6f\n", sqrtf(2.0)); } Shell session showing error message: $ gcc -o example example.c /tmp/cc4fVMFv.o: In function `main': /tmp/cc4fVMFv.o(.text+0x12): undefined reference to `sqrtf' collect2: ld returned 1 exit status $ Setting path and and gcc environment variables did not make the program compile. Is this feature (math.h), fully implemented or, unsupported or, depreciated? Please, tell me what to do to get this program to work. -Ihor

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MUUG Meeting, Feb 11, 7:30PM -- Wireless Network Setup and Security
by gedetil＠cs.umanitoba.ca 04 Feb '03

04 Feb '03

[Posted to man.unix.general and other new groups] ------ Forwarded Article <b1oue1$im7$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, February 11. The meeting topic for this month is as follows: Wireless Network Setup and Security Wireless networks are becoming a popular alternative for home users and small businesses. A small LAN can be installed more quickly (and sometimes more cheaply) with standards-compliant wireless equipment than with traditional ethernet wiring. Unfortunately, many users value the flexibility of wirless networks without recognizing the security risks involved. Adam Thompson will discuss and demonstrate connecting a RedHat 8.0 system to an existing ethernet infrastructure and, time permitting, configuring WEP (Wired Equivalent Privacy). 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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Roundtable February 2003