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Re: Not so Random
by Amish Mehta 03 Oct '02

03 Oct '02

You might want to see perldoc -f srand # PERL random seed documentation. srand EXPR srand Sets the random number seed for the "rand" opera- tor. If EXPR is omitted, uses a semi-random value supplied by the kernel (if it supports the /dev/urandom device) or based on the current time and process ID, among other things. In versions of Perl prior to 5.004 the default seed was just the current "time". This isn't a particularly good seed, so many old programs supply their own seed value (often "time ^ $$" or "time ^ ($$ + ($$ << 15))"), but that isn't necessary any more. In fact, it's usually not necessary to call "srand" at all, because if it is not called explicitly, it is called implicitly at the first use of the "rand" operator. However, this was not the case in version of Perl before 5.004, so if your script will run under older Perl versions, it should call "srand". Note that you need something much more random than the default seed for cryptographic purposes. Checksumming the compressed output of one or more rapidly changing operating system status programs is the usual method. For example: srand (time ^ $$ ^ unpack "%L*", `ps axww | gzip`); <snip> etc. You should be able to write similar code in C. Amish. Shailesh wrote: >Good point. >Caveat: But based on philips advice two pieces of code.

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Classic error
by Satya 03 Oct '02

03 Oct '02

h=hid; while(h!=NULL) { if(memcmp(b,h->msgid,16)==0) { memcpy(c,h->id,8); } } Spot it. -- Satya. <URL:http://satya.virtualave.net/> A stitch in time would have confused Einstein.

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Agenda for workshop @ SPCE / IEEE (19-20 Oct. 2002) - Call for Speakers
by Dinesh Shah 03 Oct '02

03 Oct '02

Hi All, This is tentative agenda for the upcoming GNU/Linux Seminar in SPCE, Andheri. Today I held a meeting with Bala and Vinay for SPCE Workshop (Organizers of workshop) @ my office. They were to confirm the agenda by today... We also discussed the logistics involved. I have marked speakers for various topics. I would like the confirmation from the respective speaker ASAP with their availability. However, there is slight chance of change in schedule. Please confirm your availability so as to enable us to finalize the schedule. Also new speakers are invited for the topics listed bellow. TIA for your support and help. Day - 1 (19 Oct.) 09:00 - Registration 09:45 - Introductions and Welcome Speaker: (Bala Subramanium / Faculty member ?) 10:00 - Introduction, Ideology, philosophy and History of Free and Open Source s/w and GNU/Linux. Speaker: (Dr. Nagarjuna ?) 12:00 - Installation Of RH / Debian Speaker: (Mitul Limbani / Parag Mehta ?) 13:30 - Lunch Break 14:30 - Linux / Unix file system hierarchy, OS principles, diff from MS-DOS / Win Speaker: (Dinesh Shah / Terrence ?) 16:30 - Tea Break 16:45 - TCP/IP and Networking basics Speaker: (Trevor Warren ?) 18:00 - Q&A Free wheeling 19:00 - Winding up the day. Day - 2 (20 Oct.) 09:45 - Introductions and Welcome Speaker: (Bala Subramanium / Faculty member ?) 10:00 - Basic System Administration, troubleshooting and asking for help. Netiquette and LUGiquette. Speaker: (Philip Tellis ?) 12:00 - Introduction to PRC and Network / System Security Concepts Speaker: (Trevor Warren / Shankar Ramchandran ?) 13:30 - Lunch Break 14:30 - Programming and Development in GNU/Linux, C, C++, JAVA, Perl, PHP, Python, Shell... Speaker: (Dr. Nagarjuna - Python, Philip Tellis - Perl, Sameer - C/C++, R. Jaju - JAVA/GUI, Krishnan - C/C++, Mr. Tapeshwar - GTK/QT, Mitul Limbani - PHP, Dinesh Shah - Shell ... ?) 17:00 - Applications and extensions like embedded systems, open hardware Speaker: (Terrence / Parag Mehta / Dinesh Shah ?) 18:30 - Q & A Free Wheeling. 19:00 - Concluding the seminar with invitation to participate in ILUG, PRC. -- --Dinesh Shah :-) Shah Micro System dinesh(a)indiamail.com http://dineshah.tripod.com Tel: (+91-22) 6747120 / 6730708 / 6730709 Fax: (+91-22) 6926233 Mobile: 098213-11906

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Not so Random
by Nikhil Joshi 03 Oct '02

03 Oct '02

Hi! i've taken this code straight from man rand it is supposed to generate random number between 1 and 10 j=1+(int) (10.0*rand()/(RAND_MAX+1.0)); now when I print j it *always* gives 9 i don't think this is random i guess it has something to do with seed (what is it anywayz ?) when i call srand with different seed value it gives some other integer, but again it *always* gives that integer only.. thx -- Nikhil Joshi

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Re: [ILUG-BOM] [ot]sorry 'bout the multiple mails
by q u a s i 03 Oct '02

03 Oct '02

At 11:27 morn 10/2/02 +0530, NJ wrote: >i guess u shud use sendmail instead. it iz damn cool... ummm... I dont know how to use sendmail. Could you please explain it to me? Eudora for mail but currently migrating to Gnus 5.9.0. quasi

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Re: [ILUG-BOM] Agenda for workshop @ SPCE / IEEE (19-20 Oct. 2002) - Call for Speakers
by Dinesh Shah 03 Oct '02

03 Oct '02

Hi Nikhil, On Wed, 2 Oct 2002, Nikhil Kale wrote: > Hi Dinesh, > Is this seminar open for anyone to attend? I would > like to come and listen. I am quite comfortable with > Linux, but not on the system and administration side. > Leet me know, > Nikhil Kale. The seminar is organised by IEEE chapter of SPCE. I will ask the organisers if others can attend the same. I think as long as number of ppl from outside are limited they wouldn't mind. So i think you most welcome to attend the same. :-) BTW, why not come as presenter, since you are confy with Linux. Take a pick of the topic you are most conversent with. This will be, like having best of both worlds. :-) What say? > ===== > Nikhil Kale > Software Engineer > Mahindra British Telecom Ltd. HTH With regards, -- --Dinesh Shah :-) Shah Micro System dinesh(a)indiamail.com http://dineshah.tripod.com Mobile: 98213-11906

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[ot]sorry 'bout the multiple mails
by q u a s i 02 Oct '02

02 Oct '02

vsnl asses !! their smtp is acting up more n more lately sorry...

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DNS question
by Rahul Saxena 02 Oct '02

02 Oct '02

Hi there, I am using redhat 7.2 with a dialup connection. my resolv.conf looks like this... when i set it. nameserver 202.54.1.30 nameserver 202.54.1.18 search . however sometime after getting connected the addresses of the name serververs change to nameserver 203.197.12.30 nameserver 202.54.1.72 search . why is this .. arnt the original servers working ? and i have a problem with some websites while connected to VSNL generall in the past few days ! also what does the "." mean , the one after search ? Thanks -regards rahul

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Dual Processor
by Linux Group 01 Oct '02

01 Oct '02

Hello Everybody, Can anyone tell me if there is any additoinal configuration has to be made for a Dual Processor M/C( Intel). Or while installing Linux 7.3 it will automatiocally take care of dual processor?? Thanks __________________________________________________________ Give your Company an email address like ravi @ ravi-exports.com. Sign up for Rediffmail Pro today! Know more. http://www.rediffmailpro.com/signup/

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Re: [ILUG-BOM] Buggy C prog
by q u a s i 01 Oct '02

01 Oct '02

At 10:23 morn 10/1/02 +0530, PT wrote: >think buffer overflow. ^^^^^ Alas, cannot do that. No native hardware support. '-)

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