GNUnify '09

Submitted by abhishek on Tue, 12/23/2008 - 02:23
GNUnify enters 7th Year
What it is? GNUnify, an annual technical extravaganza is organized by the students of Symbiosis institute of computer studies and research (SICSR) GNUnify, the name symbolizes GNU / Linux, the philosophy behind Free/Open source, unifying and strengthening the free / open source movement, sharing and spreading knowledge with the help of IT.

Open Source and Free Puppies

Submitted by abhishek on Fri, 12/19/2008 - 07:06
Seth Gottlieb reported that Annie Weinberger of Interwoven, a proprietary CMS vendor, launched some good old Open Source FUD comparing Open Source to a free puppy: "We look differently at the cardboard box full of free puppies outside the super market once we become adults. As children what could be more fun than to get a puppy who is going to be your friend for life? Why not mom…it’s FREE!! But as adults we have learned the truth.

Installing Oracle9i on Linux

Submitted by abhishek on Thu, 10/23/2008 - 21:02

Pre-Instalation Tasks
1. Create oracle User Account

Login as root and create te user oracle which belongs to dba group.
su -
# groupadd dba
# useradd -g dba oracle
# mkdir /home/oracle
# chown oracle:dba /home/oracle

2. Setting System parameters
Edit the /etc/sysctl.conf and add following lines:
kernel.sem = 250 32000 100 128
kernel.shmmax = 2147483648
kernel.shmmni = 128
kernel.shmall = 2097152
kernel.msgmnb = 65536
kernel.msgmni = 2878
fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000
Note: You need execute “sysctl -p” command or reboot system to apply
above settings.

Edit the /etc/security/limits.conf file and add following lines:
* - nproc 16384
* - nofile 16384

3. Setting Oracle Enviroment
Edit the /home/oracle/.bash_profile file and add following lines:

phpcamp pune 2008

Submitted by abhishek on Sun, 09/21/2008 - 17:58

phpcamp was one of the most awaited camp for me as i had started using php this year only, it was scheduled on 20th September 2008 i was planning a talk for beginners in it since long and on 19th in the evening i came to know that i have to be in college on 20th i was hig


Submitted by abhishek on Sun, 09/21/2008 - 02:52
Hey i was a speaker again this time it was phpcamp pune my talk was @ 10:15 which started @ 10:40 would be posting about this talk soon. The crowd was more then expected it was great phpcamp rocked but i had to leave and come back @ 12:00 was unable to attend other talks

Task Scheduling in Linux

Submitted by abhishek on Sun, 08/31/2008 - 18:45
In recent past i use to do certain tasks at some scheduled time on the day which also included shutting down one of my machine at 8 PM. Then I came to know that this could be effectively done automatically using cron and so I am discussing cron in this post. Cron is a daemon which schedules recurring tasks to be executed at a predefined time and date . It is very easy to schedule a job to be run at a particular time using cron. Cron daemon is typically started at boot time and runs continuously in the background.

Configuring DHCP Server on Ubuntu

Submitted by abhishek on Sat, 08/23/2008 - 17:38

Ubuntu works the apt-get way and hence makes it easy to install packages on it for confuguring Ubuntu as a DHCP server install the server software using the following command

$ sudo apt-get install dhcp3-server

this would install the required packages

after the package is installed backup the default configuration files using the following

$ sudo cp /etc/default/dhcp3-server dhcp3-server.back

dhcp3-server is a file where you specify the interface DHCP should server (wlan0 in mycase)

edit the file using

$ sudo vim /etc/default/dhcp3-server





(wlan0 might be eth0 or eth1 in your case)

save and close the file

only one more file editing is required now create a backup for mail dhcpd.conf using

$ sudo cp /etc/dhcp3/dhcpd.conf /etc/dhcp3/dhcpd.conf.back

edit the file using