coder's questions

I installed some software by running its install script with

sudo ./install.sh

After the installation all the accounts on my Ubuntu laptop can gain root access by simply issuing the command sudo -s, even the standard (non administrator) account. Also there is no password prompt when issuing the command sudo -s.

My /etc/sudoers looks like this:

Defaults    env_reset
Defaults    secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"

# Host alias specification

# User alias specification

# Cmnd alias specification

# User privilege specification
root    ALL=(ALL:ALL) ALL

# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL

# Allow members of group sudo to execute any command
%sudo   ALL=(ALL:ALL) ALL

# See sudoers(5) for more information on "#include" directives:

#includedir /etc/sudoers.d
ALL ALL=(ALL) NOPASSWD:ALL

Recently when I was trying Ubuntu 12.04 beta I got to know that it was using a PAE kernel, but I am not sure of the reason.

Why has Ubuntu shifted to PAE kernel ? Also Is there a non PAE version also available?

I am using Ubuntu 11.10 and I want to update it via Internet connection but I am not sure if my / partition has enough space.So what is the proper amount of free space required before upgrading to Ubuntu 12.04 from Ubuntu 11.10?

Is there any kernel on which we can run Ubuntu??Like in some case Debian can run on BSD kernel (if I am correct) If it is possible how can I proceed

I want to download a complete off line openssh-server package installer. I need the offline package to setup for my school project but I don't have the internet facility in the lab.

I want to switch between different version of kernel installed on my system without reboot.

That is to say if i have '3.0.0-16-generic kernel currently running and i have older kernel 3.0.0-14-generic also there, then I maybe be able to switch to 3.0.0-14-generic(the other kernel) without rebooting .

(I need to do live kernel debugging and making changes so in order to do so i can't reboot)

I am not able to start QT Creator. When I start it the following error is given.

(qtcreator:8508): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(qtcreator:8508): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(qtcreator:8508): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(qtcreato:8508): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
Connected to accessibility bus at:  "unix:abstract=/tmp/dbus-Ih3kweFmKu,guid=af07d35df387caee7e8705270000001a" 
Registered DEC:  true 
Invalid parent:  0xa4f5b78 SharedTools::QtSingleApplication(0xbfee5be0, name = "qtcreator") 
Requesting child objects for an interface that is a virtual child itself. 
Requesting child objects for an interface that is a virtual child itself. 
Requesting child objects for an interface that is a virtual child itself. 
Requesting child objects for an interface that is a virtual child itself. 
Requesting child objects for an interface that is a virtual child itself. 
Requesting child objects for an interface that is a virtual child itself. 
Requesting child objects for an interface that is a virtual child itself. 
Requesting child objects for an interface that is a virtual child itself. 
Requesting child objects for an interface that is a virtual child itself. 
Requesting child objects for an interface that is a virtual child itself. 
QSpiAdaptor::getChild INVALID CHILD:  QWidget(0xa661398, name = "qt_scrollarea_viewport") 2 
ASSERT: "interface->childCount() == children.count()" in file adaptor.cpp, line 200
Aborted

I want that applications like System Monitor and Conky display the name MYOS instead of Ubuntu 11.10.

Also, I want lsb_release -a and etc. to show MYOS only.

What is the default location for the Firefox or Chromium web browser to store data?

Also, where are the temporary data and cookies, along with user profiles, stored?

What is the difference between kernel code downloaded from http://www.kernel.org and the one downloaded from Software Center linux-source package?

Which one is better for writing a device driver?

Hello i wanted to know how can get Ubuntu source code and compile it on my own .

Basically i wanted to give it a try so can some one help me regarding the steps to compile a full Ubuntu system .

Also would this be beneficial as compared to installing from per-compiled binary?

hey i want to install Ubuntu 11.10 outside windows but i want that the default boot loader to be used is window's one.also will it be possible to insert the boot location of ubuntu after removing grub into windows bootloader

How can I switch between unity and gnome-shell without logging of my account. This will help me to switch between both anytime.

I need a few header file namely curses.h for text based programming Please tell me how to install these header files.

i want to know how to change the user name of my root account from root to xyz.

Also I want to know how to remove the option of boot into rescue mode from grub option at the boot time.

Hey I want best of all worlds and hence I want that i have Kubuntu,edubuntu Xubuntu etc in my single ubuntu installation can someone please help??

Recently one of my friends came over to my place, within 15 minutes he hacked my account using a Live CD and reset the password in front of me. I was baffled to see such a thing. Please guide me to prevent such a future attempt using a Live CD.

I want to write an application that will integrate Gmail into unity please help me. PS I dont want to use previous applications like Gmail notifiers.

i want to write a device driver but not able to find the header file can someone please help me find them?Also if someone can point out some important site links that would be really appreciated

Possible Duplicate:
How do I install the latest stable version of Firefox?

how to update firefox in ubuntu 10.04 LTS to firefox 7