Discuss July 2007

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268 participants
324 discussions

Centos on a Flash drive and Micro drive
by Robert Moskowitz 15 Jul '07

15 Jul '07

I am considering putting together a 'micro server' that I can easily travel with. I am seriously considering the decTOP, as at $99 (plus the cost of a 256MB SIMM) is amazingly priced. But I want to run on batteries, so trash a real hard drive. I have a couple of IDE to Compact flash adapters that support 2 flash cards. So I was considering a 4Gb (or even 2Gb) cheap real fash card for the OS and a 4 or 8 Gb micro drive (I have a 4Gb sitting in a drawer gathering dust got to figure out how to fix its paritions that I messed up). So I was thinking to put the more static parts of the OS on the flash card and the not static parts on the micro drive. Obviously the Swap partition, /home, and /var/log go onto the micro drive. What else? /tmp? Are /dev and /proc real things on disk or only pointers to the various devices? And then how do I put all these directory trees on the micro drive. I currently use a LVM partition for my /home on my notebook, but this is a lot more. Do I do Symbolic links? Or what. Are there any howtos? I have not found anything to help me so far. Probably got at least a week to figure this out. Obviously I don't have the system right now. And monday it is off to San Fran for the IEEE 802 meeting... (and the following week IETF in Chicago, family gets really upset when I have these 'back-to-back' conferences).

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CentOS-announce Digest, Vol 29, Issue 7
by centos-announce-request＠centos.org 15 Jul '07

15 Jul '07

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CESA-2007:0675 Moderate CentOS 4 i386 perl-Net-DNS - security update (Johnny Hughes) 2. CESA-2007:0675 Moderate CentOS 4 x86_64 perl-Net-DNS - security update (Johnny Hughes) 3. CESA-2007:0519 Moderate CentOS 4 x86_64 xorg-x11 - security update (Johnny Hughes) 4. CESA-2007:0519 Moderate CentOS 4 i386 xorg-x11 - security update (Johnny Hughes) 5. CESA-2007:0662 Moderate CentOS 4 x86_64 httpd - security update (Johnny Hughes) 6. CESA-2007:0662 Moderate CentOS 4 i386 httpd - security update (Johnny Hughes) 7. CESA-2007:0662 Moderate CentOS 4 ia64 httpd - security update (Pasi Pirhonen) 8. CESA-2007:0662 Moderate CentOS 4 s390(x) httpd - security update (Pasi Pirhonen) ---------------------------------------------------------------------- Message: 1 Date: Sat, 14 Jul 2007 12:44:40 -0500 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CESA-2007:0675 Moderate CentOS 4 i386 perl-Net-DNS - security update To: CentOS-Announce <centos-announce(a)centos.org> Message-ID: <46990B88.9080303(a)centos.org> Content-Type: text/plain; charset="iso-8859-1" CentOS Errata and Security Advisory 2007:0675 https://rhn.redhat.com/errata/RHSA-2007-0675.html The following updated files have been uploaded and are currently syncing to the mirrors: i386: perl-Net-DNS-0.48-2.el4.i386.rpm src: perl-Net-DNS-0.48-2.el4.src.rpm

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SOLVED: Re: [CentOS] Newbie ADSL configuration, ppp0 can't activate & config not found
by Lanny Marcus 15 Jul '07

15 Jul '07

>Message: 23 >Date: Fri, 13 Jul 2007 22:11:59 -0400 >From: Dan Halbert <halbert(a)everyzing.com> >Subject: Re: [CentOS] Newbie ADSL configuration, ppp0 can't activate & > config not found >Message-ID: <469830EF.3080601(a)everyzing.com> >mailing-lists(a)computer2.com wrote: > I am frustrated. This is a dual boot box, Win XP (Spanish) and CentOS >4.4. The phone company man came today and installed ADSL to the WinXP <snip> >Dan wrote: If you have a router, then the ADSL connection you have is >handled by the router, and is invisible to you, on the LAN side of the <snip> Thank you! I was busy and gone most of the day yesterday and didn't touch the box after about 7 A.M. Early this morning, I came in here and in two (2) minutes, the box was online in Linux. :-) The problem was that I'd seen in System Tools > Internet Configuration Wizard (internet-druid) and I set up an xDSL connection ppp0, which was not necessary, as you wrote, because the ADSL Router the phone company man brought does the log in. After I deleted the ppp0, I set up eth0 again, to get my IP from the ISP via DHCP and I put in the 2 IP numbers for their DNS servers, restarted the Network and I am online! :-) I knew this was something extremely simple, but it was Friday the 13th and to use Johnny's phrase, I had a cubic butt load of frustration. :-) This will hopefully make it easier for me to get Devil-Linux configured, for my Firewall/Router box. Walt Reed: I get the Mailing List Digest, which will come in about 90 minutes, but I looked at the archives this morning and I also saw your post, which is much appreciated. I am going to try to use Devil-Linux and if I can't get that working, I will use IPCop, for my Firewall/Router. Thanks to both of you for replying to me and to everyone who participates in this great mailing list! Lanny

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Postfix Question
by ethericalzen＠gmail.com 15 Jul '07

15 Jul '07

I've googled around and although I get a lot of hits about postfix smarthost authentication with ssl, I can not find out how to actually accomplish the task. I've read through smatterings of postings from Neophasis and the like searching for just the syntax and what file (I assume it's main.cf) I should be using; however, any smtpd_ lines I have tried result in postfix hanging and refusing to deliver mail. I could simply cease using smarthost, but my ip address is dynamic (yes I know stop yelling at me I'm poor right now) so mail bounces to some domains if I don't use smarthost. The server I'm running postfix on is CentOS 4 (fully updated). Postfix version is 2.2.10-1.1.el4 (from rpm -qa). I have not had sufficient downtime to upgrade to CentOS 5. Should I do that? Sincerely -- Alex White ethericalzen(a)gmail.com Life is a prison, death is a release

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Tired of temp induced shutdowns
by Robert Moskowitz 15 Jul '07

15 Jul '07

My notebook has a habit of getting hot, and Centos just shuts down. Just did it again: Jul 15 01:35:12 nc4010 kernel: ACPI: Critical trip point Jul 15 01:35:12 nc4010 kernel: Critical temperature reached (113 C), shutting down. Jul 15 01:35:12 nc4010 kernel: Critical temperature reached (55 C), shutting down. Jul 15 01:35:13 nc4010 shutdown[9847]: shutting down for system halt Jul 15 01:35:13 nc4010 gconfd (rgm-2904): Received signal 15, shutting down cleanly Jul 15 01:35:13 nc4010 gconfd (rgm-2904): Exiting What I would like to know is where are the threshholds stored? It would be nice if some alarm went off (like with low battery), giving me time to grab the blue-ice block out of the freezer (or at least saving some work and pointers!).

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Centos on the decTOP?
by Robert Moskowitz 15 Jul '07

15 Jul '07

https://store.dataevolution.com/ProductDetails.asp?ProductCode=DT%2D7001 For $99 a nice little system with AMD Geode GX500 128Mb memory and 10Gb disk. Upgrade to 256Mb and off we go? Replace the hard drive with a Flash card, and run off a battery pack? Add Bluetooth (lower power draw that 802.11) and run IP over it to your desktop.... It does have ethernet, so a crossover cable works too. Would be nice if I could know if I can pull that GX500 and put in a slightly faster cpu....

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Re: [CentOS] Strange C programming problem
by fredex 14 Jul '07

14 Jul '07

On Sat, Jul 14, 2007 at 12:52:09PM -0400, Michael Velez wrote: > > > > > I've got this little program I wrote to test something, and > > it keeps giving the wrong result. I'm not inexperienced in C, > > but I can't believe strtof (et al) are broken, so I must be > > doing something wrong. However, I've spent hours looking at > > this and comparing it to the man pages and don't see what I'm > > doing wrong. strtod() and strtold() also give equally wrong > > results. (the example program given on the strotd man page > > works fine, BTW.) > > > > Can someone wield a clue-bat please? :) > > > > Here's the program: > > > > #include <stdio.h> > > #include <math.h> > > #include <stdlib.h> > > #include <errno.h> > > > > int main (int argc, char ** argv) > > { > > float ldbl = 0.0; > > char * endp; > > > > printf ("%s\n", argv[1]); > > > > errno = 0; > > ldbl = strtof (argv[1], &endp); > > if (errno != 0) > > printf ("strtof failed! errno=%d\n", errno); > > > > printf ("%f\n", (double) ldbl); > > printf ("%f\n", (double) strtof (argv[1], (char **)NULL)); > > printf ("%f\n", (double) atof (argv[1])); > > > > return 0; > > } > > > > Compile it with: > > > > cc -O0 -g -o x4 x4.c > > > > then run it like this: > > > > ./x4 2.5 > > > > and I'd EXPECT it to produce this output: > > > > 2.5 > > 2.5 > > 2.5 > > 2.5 > > > > but it actually produces this: > > > > 2.5 > > 1075838976.000000 > > 1075838976.000000 > > 2.500000 > > > > the typecase of the arg in the 3 printf calls makes no > > difference. Remove it and the results are the same. > > > > Using an input of something other than 2.5 changes the middle > > two lines in some way in which I haven't yet discerned a > > pattern, but the result is still highly bogus. > > > > The following strtod line works fine on my system (CentOS 5, latest updates, > x86_64): > > printf ("%lf\n", (double) strtod (argv[1], (char **)NULL)); > > For strtof, the SYNOPSIS in the man page mentions you need to add: > > #define _ISO_C99_SOURCE > > Or > > #define _XOPEN_SOURCE 600 > > Either line should be added before ALL include files (note there is a > mistake in the synopsis. There should be no = sign in the define statement > for _XOPEN_SOURCE). > > The above #define lines enforces C99 compatibility rules, which is the > revised ISO C standard which came out in 1999. As a previous responder > suggested, you can also specify -std=gnu99 or -std=C99 on the compile line. > > Michael Sorry, I forgot to mention that I'm using Centos 4.5. And the man page here doesn't mention those #define settings. I'll give it a try, thanks! -- ------------------------------------------------------------------------------- .---- Fred Smith / ( /__ ,__. __ __ / __ : / / / / /__) / / /__) .+' Home: fredex(a)fcshome.stoneham.ma.us / / (__ (___ (__(_ (___ / :__ 781-438-5471 -------------------------------- Jude 1:24,25 ---------------------------------

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Fedora Revisor with CentOS 5 Support
by Matt Martz 14 Jul '07

14 Jul '07

Looks like Fedora released a new version of Revisor, 2.0.4.1-2, (Custom Live CD Generator) that includes support for generating CentOS5 live cds. Just thought someone might like to know. Cheers! -- Matt Martz mdmartz(a)sivel.net CentOS Mirror Admin

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Strange C programming problem
by fredex 14 Jul '07

14 Jul '07

I've got this little program I wrote to test something, and it keeps giving the wrong result. I'm not inexperienced in C, but I can't believe strtof (et al) are broken, so I must be doing something wrong. However, I've spent hours looking at this and comparing it to the man pages and don't see what I'm doing wrong. strtod() and strtold() also give equally wrong results. (the example program given on the strotd man page works fine, BTW.) Can someone wield a clue-bat please? :) Here's the program: #include <stdio.h> #include <math.h> #include <stdlib.h> #include <errno.h> int main (int argc, char ** argv) { float ldbl = 0.0; char * endp; printf ("%s\n", argv[1]); errno = 0; ldbl = strtof (argv[1], &endp); if (errno != 0) printf ("strtof failed! errno=%d\n", errno); printf ("%f\n", (double) ldbl); printf ("%f\n", (double) strtof (argv[1], (char **)NULL)); printf ("%f\n", (double) atof (argv[1])); return 0; } Compile it with: cc -O0 -g -o x4 x4.c then run it like this: ./x4 2.5 and I'd EXPECT it to produce this output: 2.5 2.5 2.5 2.5 but it actually produces this: 2.5 1075838976.000000 1075838976.000000 2.500000 the typecase of the arg in the 3 printf calls makes no difference. Remove it and the results are the same. Using an input of something other than 2.5 changes the middle two lines in some way in which I haven't yet discerned a pattern, but the result is still highly bogus. Thanks! -- ---- Fred Smith -- fredex(a)fcshome.stoneham.ma.us ----------------------------- "And he will be called Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace. Of the increase of his government there will be no end. He will reign on David's throne and over his kingdom, establishing and upholding it with justice and righteousness from that time on and forever." ------------------------------- Isaiah 9:7 (niv) ------------------------------

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Re: [CentOS] Newbie ADSL configuration, ppp0 can't activate &
by mailing-lists＠computer2.com 14 Jul '07

14 Jul '07

>Message: 23 >Date: Fri, 13 Jul 2007 22:11:59 -0400 >From: Dan Halbert <halbert(a)everyzing.com> >Subject: Re: [CentOS] Newbie ADSL configuration, ppp0 can't activate & > config not found >To: CentOS mailing list <centos(a)centos.org> >Message-ID: <469830EF.3080601(a)everyzing.com> mailing-lists(a)computer2.com wrote: <snip> If you have a router, then the ADSL connection you have is handled by the router, and is invisible to you, on the LAN side of the router. The router could be connecting to the WAN via a piece of wet string, as far as you care. So you should just have eth0 do DHCP and leave it connected to the router. You'll get an address like 192.168.1.2 from the router. You don't need ppp0 at all; to Centos the router appears like a LAN that routes to the Internet. In Windows, do "ipconfig" in a Command window, and you'll see what I mean. You should see something similar with ifconfig in Centos. Dan: Thank you for replying! I will try what you suggested, ASAP. Yesterday was Friday the 13th.... I need to get this working, before I try to get my Firewall/Router working! Lanny

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Discuss July 2007