Multiple buffer overflows were discovered in the Ubuntu Linux kernel and can be corrected by upgrading your system to latest kernel version.
A step-by-step guide for updating Ubuntu Linux software / system and patching system for security updates.
A quick way to fix shell post / pre execution scripts package problem under Debian / Ubuntu Linux.
apturl lets you install packages using a apt:pkgname like synatx. For example, install php5 package by visiting url. You should see prompt as follows:
You can install apturl under Ubuntu Linux by entering following command:
$ sudo apt-get install apturl
=> apturl package project home page. (found via Linux Hack3r)
From my mail bag:
I’ve downloaded .avi files which is compressed into small sizes while maintaining relatively high visual quality using DivX format. How do I play DivX compressed files under Debian / Ubuntu Linux?
The current version of the DivX Community Codec for the Windows platform is version 6.6, and for Mac OS X is 6.6x. There is no Linux version available however with the help of VLC and DivX for Linux codec, you should able to play all sort of DivX files.
Download and Install DivX Linux Codec
Open terminal and type the following command to download DivX codec:
$ cd /tmp
$ wget http://download.divx.com/labs/divx611-20060201-gcc4.0.1.tar.gz
Untar DivX 6.1.1 codec for Linux:
$ tar -zxvf divx611-20060201-gcc4.0.1.tar.gz
Install divx611 codec:
$ cd divx611-20060201-gcc4.0.1
$ sudo ./install.sh
Press Q after reading agreement, please type yes to install codes.
Install vlc player
The VLC media player can be installed using apt-get command, type:
$ sudo apt-get update
$ sudo apt-get install vlc
How do I play files?
Open VLC player by Visiting Applications > Sound and Video > VLC Player. You can also open terminal and type the command:
$ vlc /path/to/my-downloaded-movie.avi
Favorites icon (favicon) file is placed in a web server root directory. It is a page icon or associated with a particular website. For example when you visit our site you see favicon in the browser’s URL bar, next to the site’s name. Also it appears next to the site’s name in lists of bookmarks, and next to the page’s title in a tabbed document interface.
There is a tool called ppmtowinicon which convert 1 or more portable pixmaps into a Windows .ico file You need to specify one or more portable pixmaps as input and it produces a Microsoft Windows .ico file as output. A Windows icon contains 1 or more images, at different resolutions and color depths. Microsoft recommends including at least the following formats in each icon (size and bits-per-pixel):
=> 16 x 16 – 4 bpp
=> 32 x 32 – 4 bpp
=> 48 x 48 – 8 bpp
How to create a favicon.ico with GIMP
You need to install netpbm – a graphics conversion tools under Linux / UNIX. You also need GIMP – the GNU Image Manipulation program to create a favicon on Linux.
Install netpbm and GIMP
Use apt-get command to install packages under Debian / Ubuntu Linux:
$ sudo apt-get install netpbm gimp
Step # 1: Convert logo to ppm raw format
- Open your logo using GIMP
- Now cut and paste logo in square
- Next resize logo by visiting Image > Scale image option. Set pixel size to 16 x 16 or 32 x 32 or 48 x 48.
- Next click on File > Save as > Enter file name as favicon.ppm > Click on Save > Raw Encoding > Ok
Step # 2: Convert portable pixmaps into a Windows .ico file
Now run the following command to create a .ico file:
$ ppmtowinicon -output favicon.ico favicon.ppm
Step # 3: Upload favicon.ico file
Upload favicon.ico file to webserver root directory such as /var/www/html or /srv/httpd/cyberciti.biz.
Step # 4: Favicon example
To activate favicon, modify your site pages or template by placing following code between <head>…</head> section:
<link rel="shortcut icon" href="/favicon.ico" />
Upgrading lighttpd is a piece of cake. There are two methods:
a) Use yum or apt-get or FreeBSD ports / command to update binary lighttpd package
b) Just download latest lighttpd tar ball from official web site and install the same.
Let us see how to upgrade lighttpd using source code (tar ball).
# 1 : Download lighttpd
Use wget or lftp command line http / ftp accelerator tools:
$ cd /opt
$ wget http://www.lighttpd.net/download/lighttpd-1.4.17.tar.gz
# 2 : Verify lighttpd
Use sha1sum or md5sum hash to verify lighttpd tar ball integrity:
$ md5sum lighttpd-1.4.17.tar.gz
# 3: Configure lighttpd
Now configure and compile lighttpd web server:
# 4: Stop lighttpd
First stop currently running lighttpd web server:
# /etc/init.d/lighttpd stop
Make sure you are in installation directory, use the following command to uninstall old version:
# make uninstall
# 5: Install lighttpd
Just enter the following command:
# make install
# /etc/init.d/lighttpd start
Watch out for lighttpd log files for any problems:
# tail -f /var/log/messages
# tail -f /var/log/lighttpd/error.log
# tail -f /var/log/lighttpd/scripts.log
# tail -f /var/log/lighttpd/access.log
A note about binary package upgrade method
You can download rpm file or use yum / apt-get command:
apt-get update lighttpd
yum update lighttpd