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[xawtv and webcam looping]
by mr6re9-mI4xJ4qlgtBiLUuM0BA3LQ＠public.gmane.org 23 Dec '03

23 Dec '03

On Monday 22 December 2003 11:08, David J Patrick wrote: > Have you considered http://gspy.sourceforge.net/ ? > gspy is designed for webcam based security and may offer fewer headaches > YMMV > djp > This looks worth a test run. I am curious as to how it builds the MPEG's. I would like a format playable on winboxes. The way I make the movies now will only work with mplayer on Linux. Example from man mencoder: mencoder \*jpeg -mf on:fps=25 -o output.avi -ovc lavrc ...will put all the jpeg's in current directory into a single avi. Only thing is it isn't very 'seekable' (hourly only) I ain't sure yet how to use :vhq: and keyint= /etc. The odds of me catching a bike thief are slim compared to the risk I might learn something useful about my Linuxes. Thanks, farmer6re9 -- Eating Crow is better with MyCrowSauce -- The Toronto Linux Users Group. Meetings: http://tlug.ss.org TLUG requests: Linux topics, No HTML, wrap text below 80 columns How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml

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Now I Know
by roulton623-bJEeYj9oJeDQT0dZR+AlfA＠public.gmane.org 23 Dec '03

23 Dec '03

Thanks Joe I didn't know what the summary on the Mandrake 9.1 was supposed to do since I got a blank screen on that particular spot in the setup where my installation locked up. The question I have is there anything in that part of the setup that would cause a lag when starting applications. You said that is the area where you get to configure hardware that is found and add hardware that wasn't detected. Could there be any thing in there that could be configured wrong to cause my problem. If there is then my problem could be solved by configuring what ever it is that might be configured wrong. Thanks Stephen <roulton623-bJEeYj9oJeDQT0dZR+AlfA at public.gmane.org> -- The Toronto Linux Users Group. Meetings: http://tlug.ss.org TLUG requests: Linux topics, No HTML, wrap text below 80 columns How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml

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C programming question
by wildberger-iRg7kjdsKiH3fQ9qLvQP4Q＠public.gmane.org 23 Dec '03

23 Dec '03

On December 23, 2003 06:45 pm, Matthew Rice wrote: > or even better, use mmap(2). I tried to read the man mmap(2) pages, but as always, these pages leave me in the dark. It would be so nice, if there would be a typical usage example included ( in all man pages!). These pages are designed for people who already know all the In's and outs, but are rather useless to anyone not yet familiar with their content. Am I alone in this assessment? John -- The Toronto Linux Users Group. Meetings: http://tlug.ss.org TLUG requests: Linux topics, No HTML, wrap text below 80 columns How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml

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C programming question
by wildberger-iRg7kjdsKiH3fQ9qLvQP4Q＠public.gmane.org 23 Dec '03

23 Dec '03

On December 23, 2003 06:45 pm, Matthew Rice wrote: > And this is better than: > > od -j 68 -N 2 -t x2 /dev/mem > > because??? ;) You don't get an argument from me on this. :-) I actually used this to verify my program. It is short, but not as much educational as writing a C- program. > > > short x; > > ssize_t size = read( fd, &x, 4 ); > > Shorts aren't 4 bytes. Perhaps you should change the '4' to: > > sizeof(short) > or sizeof(x) It does not chane the result. I used the 'short' to get away from a printout with four bytes (high order first, followed by low order) which was confusing and not what was asked. > > or even better, use mmap(2). I will experiment with this as a next step in my education. > > Or even way better, read a book: Better, but a lot more cumbersome. In addition, it is very hard to find what one needs in specific cases. Just read some of the responses to my original question and you will see that my problem was not of a nature to bring forward answers from people that have read a lot of the pertinent books. > > Title: Understanding the Linux Kernel > ISBN: 0-596-00213-0 > > It'll be much less painful. Thans for your response, John -- The Toronto Linux Users Group. Meetings: http://tlug.ss.org TLUG requests: Linux topics, No HTML, wrap text below 80 columns How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml

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C programming question
by matt-s/rLXaiAEBtBDgjK7y7TUQ＠public.gmane.org 23 Dec '03

23 Dec '03

John Wildberger <wildberger-iRg7kjdsKiH3fQ9qLvQP4Q at public.gmane.org> writes: > changes to the effect that I can specify on the command line the memory > location I want to look at. > For instance to look at memory location 68 you have to type: > ./mem 68 > The result is: > 2 bytes at offset 68 are: f84d And this is better than: od -j 68 -N 2 -t x2 /dev/mem because??? ;) > short x; > ssize_t size = read( fd, &x, 4 ); Shorts aren't 4 bytes. Perhaps you should change the '4' to: sizeof(short) or sizeof(x) or even better, use mmap(2). Or even way better, read a book: Title: Understanding the Linux Kernel ISBN: 0-596-00213-0 It'll be much less painful. HTH, -- matthew rice <matt-s/rLXaiAEBtBDgjK7y7TUQ at public.gmane.org> starnix inc. phone: 905-771-0017 x242 thornhill, ontario, canada http://www.starnix.com professional linux services & products -- The Toronto Linux Users Group. Meetings: http://tlug.ss.org TLUG requests: Linux topics, No HTML, wrap text below 80 columns How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml

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C programming question
by wildberger-iRg7kjdsKiH3fQ9qLvQP4Q＠public.gmane.org 23 Dec '03

23 Dec '03

On December 22, 2003 10:19 pm, Greg Franks wrote: > With all due respect, are you really sure that you know what you are > doing and or what you want? Well, most of the time I don't know what I am doing. However, for guys that are even more challenged I have converted your program to c++ and made a few changes to the effect that I can specify on the command line the memory location I want to look at. For instance to look at memory location 68 you have to type: ./mem 68 The result is: 2 bytes at offset 68 are: f84d Here is my modified version: /* mem.cpp * Original program 'mem.c' by Greg Franks Dec 22 2003 * modified, converted to C++ and commented by J.Wildberger * execute with: ./mem + arg (memloc in decimal number) * compile with: c++ -o mem mem.cpp */ #include <iostream> #include <fcntl.h> //required for O_RDONLY #include <unistd.h> //required for lseek #include <iomanip> //required for setbase using namespace std; int main(int argc, char *argv[]) { if (argc != 2) { cout <<argc<<endl; cout <<"Specify memory offset from zero"<<endl; exit (1); } int n=atoi(argv[1]); int fd = open( "/dev/mem", O_RDONLY ); //open for read only if ( fd < 0 ) { perror( "Cannot open /dev/mem: " ); exit( 1 ); } else { off_t offset = lseek( fd, n, SEEK_SET ); if ( offset == (off_t)-1 ) { perror( "Seek: " ); exit( 1 ); } else { short x; ssize_t size = read( fd, &x, 4 ); if ( size == -1 ) { perror( "Read: " ); exit( 1 ); } cout << "2 bytes at offset " << n << " are: "<< setbase(16)<< x << endl; } } exit ( 0 ); } -- The Toronto Linux Users Group. Meetings: http://tlug.ss.org TLUG requests: Linux topics, No HTML, wrap text below 80 columns How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml

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Required DRAM 168 pin FPM 5V
by teddymills-VFlxZYho3OA＠public.gmane.org 23 Dec '03

23 Dec '03

Any one have this type of DRAM? I would post this to NNTP, but I dont have access to NNTP. Actually im kinda glad my ISP is not using bandwidth for NNTP. As I understand, USENET servers can be really bandwidth intensive. --------------------------------------------------------------- teddy mills http://www.vger.ca Family Guys Quagmire "allllllllllllllllllllllllllllllll right" Capt Tenneal "LETS GO!" -- The Toronto Linux Users Group. Meetings: http://tlug.ss.org TLUG requests: Linux topics, No HTML, wrap text below 80 columns How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml

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[xawtv and webcam looping]
by taavi-LbuTpDkqzNzXI80/IeQp7B2eb7JE58TQ＠public.gmane.org 22 Dec '03

22 Dec '03

On Mon, Dec 22, 2003 at 10:58:45PM -0500, Justin Zygmont wrote: > what I don't like about this is that if someone gained access to your > computer, they could gain access to the other computer without even having > to supply a password. That'd be the point of the ssh-agent and/or keychain; to prevent trivial unauthorized use. Naturally if an authorized program gets compromised, you're screwed. > > Use ssh-agent or keychain. More info at: > > http://www-106.ibm.com/developerworks/linux/library/l-keyc2/?open&l=252,t=g… Do check the link. Daniel writes good stuff. -- taa People in the 1950s, were increasingly told by carefully designed mass media formulas who they were, what they should be, and how they could succeed. These formulas were not geared to the development of a sensitive human being. --R. Altschuler and N. Regush /*eof*/ -- The Toronto Linux Users Group. Meetings: http://tlug.ss.org TLUG requests: Linux topics, No HTML, wrap text below 80 columns How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml

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[xawtv and webcam looping]
by jzygmont-tEQKYFGiemxAYG7eUwYNkWD2FQJk+8+b＠public.gmane.org 22 Dec '03

22 Dec '03

what I don't like about this is that if someone gained access to your computer, they could gain access to the other computer without even having to supply a password. On Mon, 22 Dec 2003, Ladislav Svatos wrote: > > > 2) SSH transfer option could not be performed without manually entering a > > password. I even set up all the authorized keys and it still prompts me for > > a passphrase - I suspect an 'expect' syntax error, but I at least feel more > > secure... > > Use ssh-agent or keychain. More info at: > http://www-106.ibm.com/developerworks/linux/library/l-keyc2/?open&l=252,t=g… > > > > Lada > -- > The Toronto Linux Users Group. Meetings: http://tlug.ss.org > TLUG requests: Linux topics, No HTML, wrap text below 80 columns > How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml > -- The Toronto Linux Users Group. Meetings: http://tlug.ss.org TLUG requests: Linux topics, No HTML, wrap text below 80 columns How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml

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C programming question
by rgfranks-cmaem7PIVQT44Nm34jS7GywD8/FfD2ys＠public.gmane.org 22 Dec '03

22 Dec '03

>>>>> "John" == John Wildberger <wildberger-iRg7kjdsKiH3fQ9qLvQP4Q at public.gmane.org> writes: John> Could I ask you to expand on your two words a little bit by John> using the info in the man page in a concrete way, e.g show John> me how to access physical memory at address 0x200 to 0x205. John> Thanks, John With all due respect, are you really sure that you know what you are doing and or what you want? You must be root to run this. *** Writing to /dev/mem will probably crash and or corrupt your system. *** You can use mmap too. /* mem.c -- Greg Franks Mon Dec 22 2003 * * $Log$ */ #ifndef lint static char *rcsid = "$Header$"; #endif #include <stdio.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <unistd.h> main() { int fd = open( "/dev/mem", O_RDONLY ); if ( fd < 0 ) { perror( "Cannot open /dev/mem: " ); exit( 1 ); } else { off_t offset = lseek( fd, 0x10, SEEK_SET ); if ( offset == (off_t)-1 ) { perror( "Seek: " ); exit( 1 ); } else { long x; ssize_t size = read( fd, &x, 4 ); if ( size == -1 ) { perror( "Read: " ); exit( 1 ); } fprintf( stderr, "Offset 10 is %x\n", x ); } } exit ( 0 ); } % sudo ./a.out Offset 10 is f000ef6f For the lazy, try: % sudo od -x -N 100 /dev/mem 0000000 0001 0000 ef6f f000 e2c3 f000 ef6f f000 0000020 ef6f f000 ff54 f000 8008 f000 ef6f f000 0000040 fea5 f000 e987 f000 ef6f f000 ef6f f000 0000060 ef6f f000 ef6f f000 ef57 f000 ef6f f000 0000100 10fa c000 f84d f000 f841 f000 aa9c f000 0000120 e739 f000 f859 f000 e82e f000 efd2 f000 0000140 e7a4 f000 -- __@ Greg Franks <| _~@ __O _`\<,_ Ottawa, Ontario, Canada |O\ -^\<;^\<, (*)/ (*) (*)--(*)%---/(*) "Where do you want to go today?" Outside. -- The Toronto Linux Users Group. Meetings: http://tlug.ss.org TLUG requests: Linux topics, No HTML, wrap text below 80 columns How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml

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