Linuxers March 2005

linuxers@mm.ilug-bom.org.in

116 participants
210 discussions

libtool versioning
by Philip Tellis 27 Mar '05

27 Mar '05

I'd spoken about libtool versioning at a lug meet a long time ago. This will just be few lines on it. libtool libraries on linux are of the form: libname.so.X.Y.Z where 'name' is the name of the library, and X, Y and Z are whole numbers. Let's deal with Y first since that's the easiest. When a library author increments the Y number by 1, it signifies an internal change in the library that does not affect users of the library. These would generally be things like changing an algorithm or variable names or documentation, but not touching the API. Now the other two. The first number - X - is the library version. A library author increments this number by one when any of the following occurs: - A new feature (including API) was added - An existing feature (including API) was dropped - An existing feature (including API) was changed Of the above, the first is backwards compatible, the second is not, and the third may be (using default values for new parameters for example). For case 3, the new library may be source compatible but not binary compatible, suggesting that any code that uses the library must be recompiled to work, but not rewritten. For case 2, any code that used the dropped feature must be rewritten. For all three cases, code that uses the library may need to be recompiled even if it doesn't make use of the changed features because the virtual pointer table may have changed (specific to Compiled OO languages). libtool versioning helps tell library users what to do. Everytime X is incremented, it suggests that code may have to be rewritten or recompiled. To identify which, we look at the last digit - Z. The number Z is the library API's age, ie, how far back is it compatible. So, a few examples. You compile against: libfoo.so.3.0.0 New version released: libfoo.so.3.1.0 Action needed: none New version released: libfoo.so.4.0.1 Action needed: may need recompile/relink (4-1 == 3) New version released: libfoo.so.5.0.2 Action needed: may need recompile/relink (5-2 == 3) New version released: libfoo.so.4.0.0 Action needed: may need rewrite/recompile (4-0 > 3) Let the major library version number that we compiled against be M. In the above cases, to determine whether a recompile is required or a rewrite is required, we check that X-Z <= M <= X Here's something that I use to remind me: # +1 : 0 : +1 == new interface that does not break old one. # +1 : 0 : 0 == removed/changed an interface. Breaks old apps. # ? : +1 : ? == internal changes that doesn't break anything. Finished :) For more information, run "info libtool" -- Real Users are afraid they'll break the machine -- but they're never afraid to break your face.

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dpkg conflics
by pitcom＠vsnl.com 27 Mar '05

27 Mar '05

linuxers I'm using woody 3.0. I installed some packages like jdk, netbeans etc using tar/bin installer and some more application simmilarly. I also installed 2.6 kernel. This has created unmet dependencies, how do I resolve it? Regards Kamlesh Shah, E-comm Consultant Parth Information Technology www.parthinfo.net Email:pitcom@vsnl.com M:+919850430676

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B2d Purekde Knoopix based Distro
by Gaurav Mishra 27 Mar '05

27 Mar '05

B2D is a Knoppix-based live CD (it can optionally be installed on hard disk) with support for traditional Chinese. The project's PureKDE edition has been updated to version 20050323. The new release fixes several bugs reported in the earlier version, the KDE menu has been simplified, and bold text on Chinese web sites now displays correctly. A number of applications have been updated to their latest versions, including Freemind and Nvu (traditional Chinese editions), Azureus and Skype. Several small improvements have been made to settings of the persistent home directory, while ALSA has replaced OSS as the default sound module. download it ftp://ftp3.tnc.edu.tw/KNOPPIX/health/B2DpureKDE20050323.iso

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Minislack 0.4 Distribution Released
by Gaurav Mishra 27 Mar '05

27 Mar '05

Minislack Linux aims to be focused on Internet application, multimedia and coding tools. It's a complete system : this means that you'll be able tu browse, mail, chat, listen to music, watch videos in various formats, write documents, print, scan, burn CD and DVD, connect your camera and edit your photographs, without adding anything. Coders will like the full set of development libraries and interpreters. Minislack has the following objectives : Be simple, fast and reliable Provide one application for one task Provide coding tools and libraries Be small so that it can be distributed on a single 400MB ISO image Some features of the current version are : Kernel(2.6.11.4) with support for USB, scsi, acpi, pcmcia, bluetooth, Framebuffer, sata... gcc(3.3.5),JRE(1.5.0_01), Python(2.4),Perl(5.8.6) Windowmaker(0.91), XFCE(4.2) Mozilla-firefox(1.0.1)/thunderbird(1.0), Abiword(2.0.12), Gnumeric(1.2.13), Dia(0.94), Gimp(2.2.3) Anjuta(1.2.2), Bluefish(1.0), Gedit(2.6.1), Gvim(6.3) Alsa(1.0.8), Xine(1.0), Gnomebaker(0.3), Beep-media-player(0.9.7)

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Re: [ILUG-BOM] NEWS: CentOS has released an RHEL clone
by Nadiem 27 Mar '05

27 Mar '05

--- Clinton Goveas <clinton(a)clintongoveas.com> wrote: > A news.com report writes: > *"It took Red Hat 16 months to produce the newest > version of its premium > Linux product, which went on sale in February for as > much as $2,499 per > computer per year. > > *It took a group of programmers less than two weeks > to release a free > clone. But the move could help Red Hat as much as it > appears to hurt it." Doesn't RHEL already have a free clone called Whitebox? __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/

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Problem starting GNOME
by abhilash kumar 26 Mar '05

26 Mar '05

Hi all, Recently I happened to add an application to be started whenever I login to the system on an RHEL ES system. This I did by using Start Menu | Preferences | More Preferences | Sessions and startup programs on a GNOME Desktop. It didn't start on a KDE Desktop even at that time. All was fine and the application used to popup when I start login as desired user. Then later on I stopped the startup of the application by removing the corresponding entry at the same location. But then whenever I login as the concerned user I am unable to start GNOME but can only login to KDE (Both are installed). For other users on the system there is no problem using both the Desktop Environments. googling around also didn't help so all the suggestions are valuable Thanks in advance Abhilash Send instant messages to your online friends http://uk.messenger.yahoo.com

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Re: [ILUG-BOM] Problem starting GNOME
by Nadiem 26 Mar '05

26 Mar '05

--- Rony Bill <ronbillypop(a)yahoo.co.uk> wrote: > Nadiem wrote: > > >If you don't remove /home/rony and simply create a > new > >user called rony again, the system allocates the > >directory to this user. > > > Will the system update any damaged or deleted or > misconfigured system > files in the /home/rony directory? If so then this > is the shortest > method to repair a user's configuration as all other > data will remain > intact. When user rony is created, the system files defined by /etc/skel are copied into /home/rony. So yes, if the misconfigured files are present in /etc/skel ,they would be repaired. Regards, Nadiem. __________________________________ Do you Yahoo!? Yahoo! Mail - Helps protect you from nasty viruses. http://promotions.yahoo.com/new_mail

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Re: [ILUG-BOM] Problem starting GNOME
by Nadiem 26 Mar '05

26 Mar '05

--- Rony Bill <ronbillypop(a)yahoo.co.uk> wrote: > Suppose an existing user 'rony' was removed, and a > new user called > 'rony' was created, how will the system remove the > older 'rony' and > allot the existing ~rony directory to the new 'rony' When you "remove" a user, you have to remove the user's entry in the passwd, shadow, group and gshadow files (using vipw and vigr commands). After that you have to manually delete /home/rony and /var/spool/mail/rony. Only after completing these steps, is the user rony removed completely from the system. If you don't remove /home/rony and simply create a new user called rony again, the system allocates the directory to this user. Regards, Nadiem. __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/

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Tally on Linux
by komal 26 Mar '05

26 Mar '05

Hello, Since last few days people have been asking question about Tally 7.2 on Linux. Does this mean that Tally is now available on Linux? If yes then where to download demo version of Tally. Regards, Komal

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Re: [ILUG-BOM] Windows 2k/2k3 won't boot <==Mandrake 9.2 & 10.1 Official
by Sameer Niphadkar 26 Mar '05

26 Mar '05

On Fri, 25 Mar 2005 Navneet Choudhary wrote : >Hi list, > >I am using Mandrake 10.1 Official on multiboot system. > > >After installing Mandrake 9.2 (yes 9.2 NOT 10.1) on >un-partitioned space. Windows stop booting. > >Since as per default GRUB setting, it should show non >*Linux OS also in Boot menu. >But, here it is not showing any other OS. > >NOTE: Boot loader might be installed on MBR (instead >of first non windows partition)? > > So, I booted to Linux & can view non-Linux >partition being mounted as below: > >#df-h > >/dev/hda1 1G 4.7G 11G 31% /mnt/win_c >/dev/hda5 5.1G 4.6G 418M 92% /mnt/win_d > >and > >#fdisk -l > >Disk /dev/hda:40.0 GB,40020664320 >16 heads, 63 sectors/track, 77545 cylinders >Units= cylinder of 1008 * 512= 516096 bytes > >Device Boot Start End Blocks Id System > >/dev/hda1 * 1 31206 15727603+ 7 HPFS/NTFS >/dev/hda2 31206 77545 23355045 f W95Ext'd(LBA) >/dev/hda5 31206 41613 524519 7 HPFS/NTFS >/dev/hda6 41613 64700 11534638+ 6 FAT16 >/dev/hda7 64500 64708 1052738 83 Linux >/dev/hda8 64709 65729 514552 82 Swap >/dev/hda9 65730 69802 2052760 83 Linux >/dev/hda10 69803 77545 3902446+ 83 Linux > >NOTE: /dev/hda1 Windows 2000 Professional > /dev/hda5 Windows 2003 Server > /dev/hda6 MISC (FAT16) > >Since, I am not getting any windows listing in my Grub >boot menu.Therefore,i have manually added windows >entry in it. > >Now, >1)when I choose windows 2000 at boot time: > >ERROR o/p:- >Root(hda0,1) >Filesystem type unknown,partition oxf >Chainloader +1 > >2)When I choose windows 2003 >Root(hda0,5) >Filesystem type unknown,partition ox6 >Chainloader +1 > > >Lastly I tried installing Mandrake 10.1 >OfficialOnce again it could not able to recognise >windows OS installed on my Hard Disk. > >Now, please suggest how to revert back to my original >configuration.. >Running Windows OS without formatting. Since it >contains lots many important installation that cant >be ported without running original Windows. > > If you have installed Mandrake 9.2 after 10.1 then grub won't recognize your OS unless you manually change the grub.conf and point it to boot the newer (9.2) kernel. Root(hda0,1) Root(hda0,5) ???????????? I think it should be (hd0,0) and (hd0,4) Sameer 'You will be what you WILL to Be' -James Allen

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Linuxers March 2005