Preparation of installation of LibreOffice 4.0.0:

First of all download the newer version of LibreOffice 4.0.0 using wget command as follows.

wget http://download.documentfoundation.org/libreoffice/stable/4.0.0/rpm/x86/LibreOffice_4.0.0_Linux_x86_rpm.tar.gz

This tar file contains RPMs of LibreOffice 4.0.0 package. Extract this tar file to some location, I like /opt.

tar -xf Libreoffice_4.0.0_Linux_x86_rpm.tar.gz -C /opt

Uninstall Previous version of LibreOffice Package:

Previously existing installation of LibreOffice package must be removed before proceeding to installation of newer version. You can use yum erase command to remove old LibreOffice package.

yum erase libreoffice*

You can use any method to uninstall earlier LibreOffice package but it must be uninstalled first. Check my earlier post How to use yum for package management.

Installation of LibreOffice 4.0.0 RPMs:

To install the RPM, you can use yum command again.

cd /opt/LibreOffice_4.0.0.3_Linux_x86_rpm/RPMS/
yum localinstall *.rpm

It will install all LibreOffice RPMs from RPMS directory.

Finalizing the installation:

The above command(s) does the first part of the installation process. To complete the process, you also need to install the desktop integration packages. To do this, change directory to the desktop-integration directory that is within the RPMS directory, by entering the following command at the command line of a terminal window:

cd desktop-integration

Now run the installation command again:

yum localinstall libreoffice4.0-freedesktop-menus-4.0.0-103.noarch.rpm

The installation process is now completed, and you should have icons for all the LibreOffice.

Now you are ready to enjoy the power of opensource. Try this version, you will feel proud to be an Open Source user or supporter. Thanks a lot to Document Foundation for such a great product.

If you like this please don't forget to share this with others, Thanks.

You can use different methods to get this like using udevinfo command, from sysfs, from /var/log/messages.

Using udevinfo:

for DEV in /dev/sd*; do
udevinfo -q env -n $DEV 2>/dev/null | grep "ID_BUS=usb";
done

Using sysfs:

Change this according to your need.

find /sys/bus/usb/drivers/usb-storage/[1-9]-[0-1]:1.0/|grep -wo sd[a-z]|head -1

Using /var/log/messages:

Grep the usb device in /var/log/messages file, when usb device is connected.

I hope USB device can be detected easily now.

• Difficulty: Easy
• Application: KStars

You may already have played with KStars, but how about creating a KStars backdrop image that’s updated every time you start up?

KStars can be run with the –dump switch, which dumps out an image from your startup settings, but doesn’t load the GUI at all. You can create a script to run this and generate a desktop image, which will change every day (or you can just use this method to generate images).

Run KStars like this:

kstars --dump --width 1024 --height 768 --filename = ~/kstarsback.png

You can add this to a script in your ~/.kde/Autostart folder to be run at startup. Find the file in Konqueror, drag it to the desktop and select ‘Set as wallpaper’ to use it as a randomly generated backdrop.

Open an SVG directly

• Difficulty: Easy
• Application: Inkscape

You can run Inkscape from a shell and immediately edit a graphic directly from a URL. Just type:

inkscape http://www.somehost.com/graphic.svg

Remember to save it as something else though!

Editing without an editor

• Difficulty: Intermediate
• Application: Various

Very long files are often hard to manipulate with a text editor. If you need to do it regularly, chances are you’ll find it much faster to use some handy command-line tools instead, like in the following examples.

To print columns eg 1 and 3 from a file file1 into file2, we can use awk:

awk '{print $1, $3}' file1 > file2

To output only characters from column 8 to column 15 of file1, we can use cut:

cut -c 8-15 file1 > file2

To replace the word word1 with the word word2 in the file file1, we can use the sed command:

sed "s/word1/word2/g" file1 > file2

This is often a quicker way to get results than even opening a text editor.

Backup selected files only

• Difficulty: Intermediate
• Application: tar

Want to use tar to backup only certain files in a directory? Then you’ll want to use the -T flag as follows. First, create a file with the file you want to backup:

cat >> /etc/backup.conf
# /etc/passwd
# /etc/shadow
# /etc/yp.conf
# /etc/sysctl.conf
EOF

Then run tar with the -T flag pointing to the file just created:

tar -cjf bck-etc-`date +%Y-%m-%d`.tar.bz2 -T /etc/backup.conf

Now you have your backup.

Read more…….

If you are familiar with CentOS, you know that out of the box, it is not really designed as a desktop distribution. Stella changes all that, as it is primarily aimed at desktop users, while retaining the core enterprise features and capabilities of CentOS.

And you can see that just by looking at the package manager. The package categories tell you that everything you can find in CentOS is also available in Stella. Plus desktop applications that you will not find in any default installation of CentOS. For example, an application listed in the screen shot below, is ROSA Media Player (ROMP), the default media player in ROSA Desktop, a distribution based on Mandriva Linux.

Because it is loaded with desktop applications and media codecs not available in CentOS, you can play most audio and video file formats out of the box. Here it shows a favorite online video playing in Firefox.

The next few screen shots show what the desktop looks like and some of the applications accessible from the menu. This one shows installed Internet applications.

Installed Office applications.

Installed multimedia applications.

Updates manager.

Read full story.

Oil Rush

Type: Real Time Strategy
License: Commercial
Price: 19.95 USD
Latest Version/Release Date: 1.07 / March 13, 2012

I start with the most awaited game I’ve ever seen in the Linux gaming world. Oil Rush offers stunning graphics and amazing optical realism and for that only, I can say it is the mark of a new era for the Linux gamers. If a new graphics card lives inside your system, then this game is one of the few that will take advantage of all its features. The gameplay is a bit out of the “classic” RTS style, but it is easy to learn and very enjoyable. Offering an amazing campaign, unique scenarios and competitive multiplayer action, Oil Rush is a must play for all of you Linux gamers out there.

Oil Rush Website

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Flight Gear

Type: Simulation
License: GPL
Price: Free
Latest Version/Release Date: 2.6 / February 20, 2012

Flight Gear is the most successful and sophisticated open source simulation project. Although its developers don’t consider it being a game, I choose to put it here because of the nature of this simulator. Flight Gear has been taking us to the skies since 1997, and it is now mature, stable, packed with airplanes, weather realism, beautiful scenery, flight dynamics engine designed by NASA and Boeing engineers, extremely useful for research projects and very enjoyable for us gamers. This year’s version, brought many things to be happy about, and there will be one more major release (version number 2.8) this year, so I believe this is a must for all simulation fans.

Flight Gear Website

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Heroes of Newerth

Type: RPG
License: Commercial
Price: Free
Latest Version/Release Date: 2.5.14 / March 09, 2012

Heroes of Newerth is an action RPG game, based on the popular Warcraft III mod map named Defence of the Ancients (dota). It may be the only choice for linux dota lovers, but thankfully it is the best we could have. This game offers the best “dota” experience, using beautiful graphics and optical effects, atmospheric sounds and music, stable multiplayer with a lot of choices for the player and above all it is free to play (you can buy some extras with real money). This game is evolving with constant update packs every week, and is now already very mature and linux-supportive. It will only get better through this year…must-play.

HoN Website

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Trine 2

Type: Puzzle Platform
License: Commercial
Price: 14.99 USD
Expected Release Date: April, 2012

Trine was a magnificent, mind seducing, wonderful tale. Trine 2 is going to be 4 times that. Using better graphics, more advanced physics, more satisfactory puzzles, more challenging obstacles and the multiplayer cooperation mode, this game is a must play for all Linux gamers this year. The only complain that we can have, is that Frozenbyte already released this game for other platforms…

Trine 2 Website

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Wakfu

Type: MMO RPG
License: Commercial
Price: Free
Latest Version/Release Date: 1.0 / February 29, 2012

Wakfu is a unique tactical MMORPG that continues the story of Dofus. In Wakfu, the player can choose between 14 different character classes all with different characteristics and abilities. There are four nations in Wakfu that rule their respected territories, have their own law system and clima. A player can be whatever he/she chooses to be, and their nations will be what their citizens choose them to be. This game is like a living ecosystem giving everyone the freedom of choice, but nothing comes without consequences whether these are positive or negative. Enter the magical world of Wakfu, and enjoy a game that brings character evolution and multiplayer cooperation to a new level.

Wakfu Website

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Amnesia: A Machine for Pigs

Type: Horror Adventure
License: Commercial
Price: Unknown
Expected Release Date: Halloween 2012

Amnesia: A Machine for Pigs will be the second episode of the Amnesia series. This episode is not connected directly to the first one, but it takes place on the same universe. This time we will be in the shoes of a rich industrial tycoon named Oswald Mandus, who collapses from a feverish nightmare in which he sees a mysterious dark machine… After having played the Penumbra series and the first episode of the Amnesia series called “The Dark Descent”, I am 100% sure that whatever horror related story is inside the minds of Frictional Games developers, it is going to be once again simply unforgettable.

Amnesia Website

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Xonotic

Type: FPS
License: GPL
Price: Free
Latest Version/Release Date: 0.6 / March 8, 2012

Xonotic is a first person arena shooter with fast and intense gameplay. The game is developed by former Nexuiz developers, and after quite some time of hard work from these talented people it has evolved into being better and more advanced in all sectors, making it the best FPS game on the Linux platform. Xonotic uses a heavily enhanced version of the Quake engine named DarkPlaces, that offers modern graphics and optical effects that will meet the requirements of even the hardest to please. Singleplayer and multiplayer fun, with balanced futuristic maps and more than enough different game modes to choose from. It may not be finished yet (version 0.6), but it surely is the best of its kind and a must play for all Linux users this year.

Xonotic Website

Re-blogged from.

Selinux is good security feature of Linux stop you to execute malicious applications. But it need to disable when you need to run your self developed application. You can check the selinux status by using following command:

# cat /selinux/enforce

1

If it will show 1, that means selinux enforcing is enabled.

You can disable that selinux temporarily or permanently. Use following methods to disable it.

Disable Temporarily:

To disable selinux temporarily set the 0 to /selinux/enforce file.

# echo 0 > /selinux/enforce

Read more.

We’ve seen this Ubuntu installer for Windows before, but now it has new features and a new name: Wubi Beta. It uses no confusing lingo, and even lets you choose a variety of options that similar applications don’t offer:

• Choose the drive to install Ubuntu (should have at least 10GB available)
• Choose how much room to reserve for Ubuntu (minimum is 4GB while 8GB is recommended)
• Chose whether to install Ubuntu (GNOME), Kubuntu (KDE), Xubuntu (XFCE), or UbuntuStudio (for multimedia workstations).
• Choose your language
• Pick your username and password

Read full story

To encrypt your files use the command:

openssl des3 -salt -in $FILENAME -out ${FILENAME}.des3

To decrypt the file use the command:

openssl des3 -d -salt -in ${FILENAME}.des3 -out ${FILENAME}

You can also use my script ‘tarcrypt.sh’ to encrypt/decrypt files. This script is using tar to compress/decompress with encryption/decryption functionality.

#!/bin/sh
#
# 'tarcrypt.sh' script can used to compress/decompress the data with encryption.
#
# This script is created & tested by Rahul Panwar.
# WARNING!!! Use it at your own risk.
# Please report the bugs or queries to panwar.rahul@gmail.com

VERSION="Version 1.1.0.1nCreated by: Rahul Panwar"
PASS=""
PASS_OPTION=""
EXT_OPTION=""
COMP_FILE="encrypted_file"

DATA_FILES_ALL=""

# Usage
usage ()
{
	echo "Usage:"
	echo "	${0##*/} -c " [  ... "  [-p ]"
	echo "	${0##*/} -x  [-C ] [-p ]"
	echo "	${0##*/} -h"
	echo "	${0##*/} -v"
	echo "OPTIONS:"
	echo "	-c|--compress	: Compress and encrypt the file(s) or directory(ies)
					for multiple files use double quotes (for example "file1 file2 dir1")."
	echo "	-x|--decompress	: Decrypt and uncompress the file"
	echo "	-p|--password	: Password to encrypt/decrypt the file"
	echo "	-C|--extract	: Change directory, to extract the compressed file, default is current directory"
	echo "	-h|--help	: To see this help"
	echo "	-v|--version	: Check the version"
}
[ $# = 0 ] && usage && exit 1

# to encrypt files using openssl
encrypt_file()
{
	FNAME=$1

	#openssl des3 -salt -in "$FNAME" -out "$FNAME.des3"
	openssl des3 -salt -out "$FNAME" ${PASS_OPTION}
}

# to decrypt the files using openssl
decrypt_file()
{
	FNAME=$1

	#openssl des3 -d -salt -in "$FNAME" -out "${FNAME%.[^.]*}"
	openssl des3 -d -salt -in "$FNAME" ${PASS_OPTION}
}

# compress and encrypt the files
en_comp()
{
	tar -czp ${DATA_FILES} | encrypt_file ${COMP_FILE}
}

# decrypt and uncompress the files
de_comp()
{
	decrypt_file ${COMP_FILE} | tar ${EXT_OPTION} -xz
}

# main function
main_function()
{
	compress=""
	decompress=""
	extract=""
	password=""
	while test "$1" != "" ; do
		OPT=$1
		OPT_VAL1=$2
		OPT_VAL2=$3
		case "$OPT" in
			--compress|-c)
				DATA_FILES_ALL="${OPT_VAL1}"
				[ ! "${OPT_VAL2}" ] && echo -e "No encrypt filename, using default name: ${COMP_FILE}"
				COMP_FILE=${OPT_VAL2:-$COMP_FILE}
				compress=1
				shift
				[ "$OPT_VAL2" ] && shift
			;;
			--decompress|-x)
				COMP_FILE=${OPT_VAL1:-$COMP_FILE}
				decompress=1
				shift
			;;
			--password|-p)
				PASS=${OPT_VAL1}
				[ "$PASS" ] && password=1 && PASS_OPTION="-pass pass:${PASS}"
				shift
			;;
			--extract|-C)
				[ ! -d "$OPT_VAL1" ] && echo -e "Extract directory not exists" && exit 1
				EXT_OPTION="-C ${OPT_VAL1:-$PWD}"
				extract=1
				shift
			;;
			--help|-h)
				usage
				exit 0
			;;
			--version|-v)
				echo -e "${VERSION}"
				exit 0
			;;
			-*)
				echo "Error: no such option $OPT"
				usage
				exit 1
			;;
			*)
				echo -e "Error: invalid option $OPT"
				usage
				exit 1
		esac
		shift
	done

	if [ "$compress" ] && [ "$decompress" ]; then
		echo -e "n-c and -x can't be used simultaneouslyn" && usage && exit 1
	elif [ "$extract" ] && [ "$compress" ]; then
		echo -e "n-C can only use with -x optionn" && usage && exit 1
	fi
}

main_function "$@"
if [ "$compress" ]; then
	for FILES in ${DATA_FILES_ALL}; do
		[ -e "${FILES}" ] && DATA_FILES="${DATA_FILES} ${FILES}"
	done
	if [ ! "${DATA_FILES}" ]; then
		echo -e "No file(s) found to compress" && exit 2
	fi
	echo "==> compressing"
	en_comp &>/dev/null && echo "success" || echo "failure"
elif [ "$decompress" ]; then
	[ ! -e "${COMP_FILE}" ] && echo -e "No file to decrypt" && exit 2
	echo "==> decompressing"
	de_comp &>/dev/null && echo "success" || echo "failure"
fi

If you found any bug in the script, please write your comment. I like to improve this, so suggestions are most welcome.

Linux Explore stats month September 2012

STEP 1: Do your task manually & prepare the steps.

If you know the basic Linux commands, it will help you to write a shell script. I am not writing the basic Linux commands here, you can see check here http://www.comptechdoc.org/os/linux/usersguide/linux_ugbasics.html

View full topic