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Re: [CentOS] help fdisk and dd
by John R Pierce 04 Mar '10

04 Mar '10

Sorin Srbu wrote: > I second that. Dban is the niftiest thing since sliced bread. Very handy > tool, if a bit slow. But I guess that comes with the territory. 8-) > DBAN runs at wire speed. Its just that disks with 100s or 1000s of gigabytes take a long long time to fully write. DBAN's default erase sequence is excessive for modern disks. the old DOD erase sequences were devised for media that used simple NRZ type encodings, with RLL encoding methods used by modern disks, they don't make any sense at all. all you really need is to write the disk with all 1s, then all 0s, and its about as good as it will get, not even CSI:Miami will find any actual data on it (of course, if the script writers need to, they'll invent data out of thin air).

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Where i download CentOS 4 iso for SPARC?
by Luigi Castro Cardeles 04 Mar '10

04 Mar '10

Hi, at http://www.centos.org/product.html show that centos support SPARC architecture. Where can i download a iso? The only one i can find is this: http://beta.centos.org/centos/4.2beta/os/sparc/ and this link is broken. Best Regard's Luigi Castro Cardeles

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[Possibly OT] rpm conflicts has me confused
by Bob Beers 04 Mar '10

04 Mar '10

Hi list, I can install the default ppp-2.4.4-2, but when I try to install an rpm I built from Sangoma's ppp-2.4.4.5 (using checkinstall-1.6.1) I get this error: # rpm -ivh ppp.2.4.4.5-1.eai.i386.rpm error: Failed dependencies: ppp < 2.4.3-3 conflicts with kernel-2.6.18-162.2.1.el5.i686 Isn't 2.4.4.5 > 2.4.3-3 ??? trying this: yum localinstall ppp.2.4.4.5-1.eai.i386.rpm --nogpgcheck gives some advice: You could try using --skip-broken to work around the problem You could try running: package-cleanup --problems package-cleanup --dupes rpm -Va --nofiles --nodigest and I tried each of those, but no joy. Is this an rpm bug, a checkinstall bug, or PEBKAC (problem exists between keyboard and chair)? thanks, -Bob Beers

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X server crashes when I fire up "Display" or "Screen Resolution" control panels
by Aleksey Tsalolikhin 04 Mar '10

04 Mar '10

Hi. I've just installed CentOS 5.4 on my IBM T61 laptop. By default, I get the same image (duplicate screens) on the laptop's LCD and on the external monitor; I want to set up separate screens but my X server crashes when I start "Display" or "Screen Resolution" control panels or press Function-F7 which is supposed to bring up the single screen/ multiple screens selection menu. I am including my Xorg.log, could somebody help me sort this out, please, or at least point me in the right direction? I do see this: (WW) intel: No matching Device section for instance (BusID PCI:0:2:1) found (--) PCI:*(0:2:0) Intel Corporation unknown chipset (0x2a02) rev 12, Mem @ 0xf8100000/20, 0xe0000000/28, I/O @ 0x1800/3 (--) PCI: (0:2:1) Intel Corporation unknown chipset (0x2a03) rev 12, Mem @ 0xf8200000/20 Do I need a special video driver? I checked http://www.linlap.com/wiki/ibm-lenovo+thinkpad+t61 which says this laptop should work OK with recent Linux distros; and I tried the xorg.conf mod in http://www.thinkwiki.org/wiki/Installing_Fedora_8_on_a_T61#Graphics but X crashes when I run xrandr. I went on the vendor website but there is no driver available - they did have an NVIDIA driver for SUSE, but my laptop does not have an NVIDIA device and I am running CentOS, not SUSE! Help? Best, -at

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Re: [CentOS] help fdisk and dd
by John Doe 04 Mar '10

04 Mar '10

From: John Doe <jdmls(a)yahoo.com> > From: chloe K > > What is the best practice to remove all data in the disk? > > ls fdisk ok or use dd > Maybe something like (replace the ?): > - fast but not secure: > dd if=/dev/zero of=/dev/?d? bs=4096 > - slow but more secure: > dd if=/dev/zero of=/dev/?d? bs=4096 > - n times slower but n times more secure: > for ((i=1; i<=n; i++)); do dd if=/dev/zero of=/dev/?d? bs=4096; done Oops, for the slow procedures, it is /dev/random instead of /dev/zero... JD

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Call for Firefox 3.6.1 and Thunderbird 3.0.1 testers
by David Hrbáč 04 Mar '10

04 Mar '10

Hi, I have made complete rebuild and backport of Firefox 3.6.1 and Thunderbird 3.0.1 to CentOS 5. Packages come with language packs, debuginfo packages, xulrunner etc. I'm looking for QA testers. Upgrade from distro versions works pretty fine. Thanks, David Hrbáč

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New Posters
by Geerd-Dietger Hoffmann 04 Mar '10

04 Mar '10

Hey I am currently in the process of getting new posters printed. Now we need to agree on a design. I am looking at [1] if people want to design something please upload and then we can decide. Cheers Didi [1] http://wiki.centos.org/ArtWork/Style/Promo/Posters -- Hoffmann Geerd-Dietger http://contact.ribalba.de

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Re: [CentOS] SSH Remote Execution - su?
by Tim Nelson 04 Mar '10

04 Mar '10

Tim Nelson Systems/Network Support Rockbochs Inc. (218)727-4332 x105 ----- "Jeremy Rosengren" <jeremy.rosengren(a)gmail.com> wrote: > > On Wed, Mar 3, 2010 at 3:36 PM, James Hogarth < james.hogarth(a)gmail.com > wrote: > > On 3 March 2010 21:20, Tim Nelson < tnelson(a)rockbochs.com > wrote: > > Greetings All- > > > > I'm about to embark on some remote management testing and need a way to login to a remote system running CentOS 4.x/5.x via SSH, su to root (using a password), then execute a command. > > > > I currently login to the boxes using key based SSH like this: > > > > ssh -i ~/remote_key admin@$REMOTEIP > > > > Then, I SU to root. However, if I try to do this automatically like this: > > > > ssh -i ~/remote_key admin@$REMOTEIP 'su -l' > > > > I'm getting: > > > > "standard in must be a tty" > > > > So, how am I able to remote login using SSH, su to root, then execute a command as root? > > > > All comments and suggestions welcome. Thanks! > > > > --Tim > > _______________________________________________ > > CentOS mailing list > > CentOS(a)centos.org > > http://lists.centos.org/mailman/listinfo/centos > > > > Best off configuring sudo for that user (with no password) and make > sure that user has !requiretty in the sudoers configuration. > > James > > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > http://lists.centos.org/mailman/listinfo/centos > Does "ssh -t" help? YESS. It prevents the tty error from showing up and asks me for a password as expected. BUT, how do I then automate the entering of the password? John Kennedy mentioned using expect which I've used before but found it to be 'finnicky'. I may have to look at it again... Changing settings such as sudo configuration or ssh config may be daunting since I have a large number of systems(150+) that would need to be modified. :-/ --Tim

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New to VM
by David Milholen 04 Mar '10

04 Mar '10

What are some min requirements for Hardware and what performance differences are there in just running another pid for an app? -- David Milholen Project Engineer 501-318-1300 Wireless Etc

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Re: [CentOS] help fdisk and dd
by Benjamin Donnachie 04 Mar '10

04 Mar '10

On 4 March 2010 14:01, Sorin Srbu <sorin.srbu(a)orgfarm.uu.se> wrote: > I second that. Dban is the niftiest thing since sliced bread. Very handy > tool, if a bit slow. But I guess that comes with the territory. 8-) The ATA Secure Erase command is generally faster but more difficult - see http://ata.wiki.kernel.org/index.php/ATA_Secure_Erase Ben

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