Re: [Ilugc] Interview questions for linux administrator
My Heartily thanks for valuable answers friends. From: Karanbir Singh To: ILUG-C Sent: Sun, 17 January, 2010 8:38:18 AM Subject: Re: [Ilugc] Interview questions for linux administrator On 01/16/2010 05:46 AM, Raja Subramanian wrote: >> 2. Is name based virtual host supports SSL? Yes, on the server end - there are some caveats as to how and which browsers support it. >> 3. If yes, then how. if you link against the stock openssl libs, then look up SNI - or just link against gnutls. I'll let you do some research on those two keywords :) - KB ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/ ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
[Ilugc] Tips of the day (Shutdown for non-root users)
Allowing non-root users to shutdown a Linux box. 1. As root create a group shutdown. #addgroup shutdown 2. Put /sbin/shutdown into the group shutdown. #chown root.shutdown /sbin/shutdown 3. Change accessrights to make /sbin/shutdown setuid and disallow other users from executing shutdown. #chmod 4754 /sbin/shutdown 4. Make a link from /bin/shutdown to /sbin/shutdown #ln -s /sbin/shutdown /bin/shutdown Now anyone belonging to the group shutdown can execute shutdown but I just will allow the person in control of the keyboard to be able to issue the shutdown command. You might prefer something else. For the following to work you need to have "shadow password" installed but I believe most have it. 5. Edit the file login.defs. Near the end of this file locate the line #CONSOLE_GROUPS floppy:audio:cdrom Remove the hashsign and add the group shutdown to this line and you get: CONSOLE_GROUPSfloppy:audio:cdrom:shutdown Thats it. Everyone logged in via the console will belong to these groups so you need not add anyone to them. I believe this is better than to just add users to the group shutdown. -- விஷ்ணுராஜ். க Kanchi Linux User Group Rocks ! http://kanchilug.wordpress.com My Experiments In Linux are here http://gnutuxfollower.wordpress.com ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
[Ilugc] Kanchi LUG weekly meet
Date : 17 / 01 / 10 Week : 39 People : 12+1 Session : 4 pm to 6 pm Location : kilasanathar temple Topics Discussed : Discussed about the basic of the perl language By : Vishnu Attendies : Arulalan , Vishnu , Selvakumar , Rajkumar , Dhasthageer , Elango , Yassir , Bala krishna , Nagaraj , Priya and myself ( Praveen ). New Guys : Sathish , prabhu studying 4th BE(CS) in AMACE , Kanchipuram. we discussed about , The basic concepts of perl language. Perl Basics : http://www.slideshare.net/kanchilug/perl-basics Details Of Next Meeting : Date : 24 / 01 / 10 Topic : More on Perl -- நன்றி பிரவீன்.சோ Kanchi Linux User Group Rocks !! http://kanchilug.wordpress.com My Views for u http://grifinder.wordpress.com ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] Help needed in Cross Compiler for GNU Mach/Hurd
Hi, --- On Sun, Jan 17, 2010 at 7:22 AM, Ranjith Kumar wrote: | I`m doing project on "cross compiler of GNU Mach/Hurd" is anyone had | experience in that means,let me know because i don`t know where to begin and | how to start it. \-- You could try hutos: http://hutos.nongnu.org/ SK -- Shakthi Kannan http://www.shakthimaan.com ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
[Ilugc] Re: Tips of the day (Gain of performance for hard disk by using 32bits transfers)
Vishnu Raj writes: > hdparm -c3 /dev/hdX > performance by 75%. > > To test how much you gained type: > > hdparm -t -T /dev/hdX Can anyone explain this... ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
[Ilugc] one-application-oneday (Glade)
Application:Glade What it is: Glade is a RAD tool to enable quick & easy development of user interfaces for the GTK+ toolkit and the GNOME desktop environment. Features: The user interfaces designed in Glade are saved as XML, and by using the GtkBuilder GTK+ object these can be loaded by applications dynamically as needed. By using GtkBuilder, Glade XML files can be used in numerous programming languages including C, C++, C#, Vala, Java, Perl, Python,and others. To know more about: http://glade.gnome.org/ Installation: sudo apt-get install glade To open: Application -> Programming ->Glade interface designer -- நன்றி , தஸ்தகீர்.அ Kanchi Linux User Group Rocks ! http://kanchilug.wordpress.com My Works on Linux http://dowithlinux.wordpress.com ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
[Ilugc] kernel optimization in size & boot up time
All, I like to reduce the kernel size and boot fast (may be 5-10 Mb kernel size) & boots up in 15 seconds. I measured, in the current default installation (FC10) the bootup time is around 45seconds and size is 50mb. I did compiling and removed the unnecessary hardware modules. Still I am seeling slight changes. May be I have removed the little. Anyone have experience in this kernel optimization. Please share your experience. Thanks Suresh ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] kernel optimization in size & boot up time
On Mon, Jan 18, 2010 at 9:52 AM, Suresh Kumar Subramanian < sureshkuma...@carc.co.in> wrote: > All, > > I like to reduce the kernel size and boot fast (may be 5-10 Mb kernel size) > & boots up in 15 seconds. > > I measured, in the current default installation (FC10) the bootup time is > around 45seconds and size is 50mb. > > I did compiling and removed the unnecessary hardware modules. Still I am > seeling slight changes. May be I have removed the little. > > Anyone have experience in this kernel optimization. Please share your > experience. > > Boot is one criteria i log, measure and tweak using http://www.bootchart.org/ , google lists this link on the top http://www.yolinux.com/TUTORIALS/LinuxTutorialOptimization.html#HARDDRIVE , it covers all of the tricks of the trade. hth -Satya satyaakam.net ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] kernel optimization in size & boot up time
On Mon, Jan 18, 2010 at 9:52 AM, Suresh Kumar Subramanian < sureshkuma...@carc.co.in> wrote: > All, > > I like to reduce the kernel size and boot fast (may be 5-10 Mb kernel size) > & boots up in 15 seconds. > > I measured, in the current default installation (FC10) the bootup time is > around 45seconds and size is 50mb. > > I did compiling and removed the unnecessary hardware modules. Still I am > seeling slight changes. May be I have removed the little. > You can get kernels as small as 400KB with minimal modules. See http://leaf.sourceforge.net/ as an example. These boot up quick. -- Mohan Sundaram ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] Interview questions for linux administrator
On Saturday 16 Jan 2010 11:16:16 am Raja Subramanian wrote: > > 3. If yes, then how. > > HTTPS cannot work with named vhosts. You need a dedicated > IP address or different TCP port numbers for every HTTPS site > you want to host. > AFAIK you do dont need a dedicated IP address - I have successfully mixed http and https on one apache - the only difference is that the http listens on 80 and the https listens on 443 (btw, I would have failed the interview) -- regards kg http://lawgon.livejournal.com ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] Interview questions for linux administrator
On Mon, Jan 18, 2010 at 11:27 AM, Kenneth Gonsalves wrote: > AFAIK you do dont need a dedicated IP address - I have successfully mixed http > and https on one apache - the only difference is that the http listens on 80 > and the https listens on 443 (btw, I would have failed the interview) What you describing is different from the issue being discussed. This query is specific to hosting *multiple* HTTPS sites using vhosts. It's a chicken/egg issue -- apache needs to read the HTTP headers to figure out which vhost SSL cert it should use, but since the HTTP request itself is SSL encrypted apache cannot read the headers without the SSL cert. Only work around is to use different IP/port numbers so this problem can be resolved. All shared hosting providers therefore require you to purchase a dedicated IP address if you want HTTPS. - Raja ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] Interview questions for linux administrator
On Monday 18 Jan 2010 12:18:11 pm Raja Subramanian wrote: > On Mon, Jan 18, 2010 at 11:27 AM, Kenneth Gonsalves > > wrote: > > AFAIK you do dont need a dedicated IP address - I have successfully mixed > > http and https on one apache - the only difference is that the http > > listens on 80 and the https listens on 443 (btw, I would have failed the > > interview) > > What you describing is different from the issue being discussed. This > query is specific to hosting multiple HTTPS sites using vhosts. possible true - I have only one https along with a bunch of http virtual sites. the https listens on 443 - so if I add another one on 443 would it work? -- regards kg http://lawgon.livejournal.com ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] Interview questions for linux administrator
> > What you describing is different from the issue being discussed. This > > query is specific to hosting multiple HTTPS sites using vhosts. > > possible true - I have only one https along with a bunch of http virtual > sites. the https listens on 443 - so if I add another one on 443 would it > work? > it practice, it cannot work. i think you should read the link below (which raja already given here) http://httpd.apache.org/docs/2.2/ssl/ssl_faq.html#vhosts i would like to know how shared SSL works - a single SSL being shared across host right? - balachandar muruganantham உலகம்.net - இலவச தமிழ் வலைப்பதிவுச் சேவை - http://ulagam.net எனது தமிழ் பக்கங்கள் - http://www.balachandar.net/pakkangal Beyond Work - http://beyondwork.wordpress.com/ "கண்ணுடைய ரென்பவர் கற்றோர் முகத்திரண்டு புண்ணுடையர் கல்லா தவர். " - குறள் எண் : 393 ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
