Posts Tagged ‘arrow keys’

Improve default picture viewing on Slackware Linux with XFCE as Desktop environment

Saturday, March 17th, 2012

Reading Time: 2 minutes

Default XFce picture viewer on Slackware Linux is GIMP (GNU Image Manipulation Program). Though GIMP is great for picture editting, it is rather strange why Patrick Volkerding compiled XFCE to use GIMP as a default picture viewer? The downsides of GIMP being default picture viewing program for Slackware's XFCE are the same like Xubuntu's XFCE risterroro, you can't switch easily pictures back and forward with some keyboard keys (left, right arrow keys, backspace or space etc.). Besides that another disadvantage of using GIMP are;
a) picture opening time in GIMP loading is significantly higher if compared to a simple picture viewer program like Gnome's default, eye of the gnomeeog.

b) GIMP is more CPU intensive and puts high load on each picture opening

A default Slackware install comes with two good picture viewing programs substitute for GIMP:
 

  • Gwenview

    Gwenview on Slackware Linux picture screenshot XFCE

  •  
  • Geeqie
  • Geeqie Slackware Linux Screenshot XFCE

    Both of the programs support picture changing, so if you open a picture you can switch to the other ones in the same directory as the first opened one.
    I personally liked more Gwenview because it has more intutive picture switching controls. With it you can switch with keyboard keys space and backspace

    To change GIMP's default PNG, JPEG opening I had with mouse right button over a pic and in properties change, Open With: program.

    XFCE4 Slackware Linux picture file properties window

    If you're curious about the picture on on all screenshots, this is Church – Saint George (situated in the city center of Dobrich, Bulgaria).
    St. Georgi / St. George Church is built in 1842 and is the oldest Orthodox Church in Dobrich.
    In the Crimean War (1853-1856) the church was burned down and was restored to its present form in 1864.

    gpicview is another cool picture viewing program, I like. Unfortunately on Slackware, there is no prebuild package and the only option is either to convert it with alien from deb package or to download source and compile as usual with ./configure && make && make install .
    Downloading and compiling from source went just fine on Slackware Linux 13.37gpicview has more modern looking interface, than gwenview and geeqie. and is great for people who want to be in pace with desktop fashion 🙂


Alex the Alligator – a nice retro style Nintendo / GameBoy like Free Software game for GNU / Linux

Tuesday, December 20th, 2011

Reading Time: 2 minutes

Alex the Alligator Free Software 4 colors game Intro GNU Linux screen

Alex the Alligator is a Free Software (Open Sourced) arcade game licensed under the General Public License (GPL)
The game is quite of fun and especially the music totally kicks ass! 😉

The game plot is simple but fun in the good Spirit of oldschool Super Mario like arcade games.
Alex the Alligator evil human kidnapper poachers helicopter, GNU / Linux

In the game you are a little cute crocodile whose (crocodile) girlfriend is kidnapped with a helicopter by the evil human poachers.
As you love her too much and you're determined to grow a crocodile family with this croco-girl you start a long quest to save her from possible zoo slavery or killing for a crocodile skin boots.
Kidnapping Lola dropping a cage Linux screenshot

The quest for kidnapped girlfriend (LOLA) liberation wents through the harsh jungles.
Alex The ALligator level 1 on Linux screenshot

Alex The Alligator has a version for both Windows and Linux ports. The Linux port is available for most major distributions including Debian, Ubuntu, Fedora etc.

To install the game on Debian and Ubuntu with apt-get issue:

debian:~# apt-get --yes install alex4
...

After installing the game can be run from command line using cmd:

alex4

The game controls are as follows;
 

  • Arrow Keys – Movement
  • Alt – Jump
  • Ctrl – Fire (if you have previously collected Eggs

Alex the Alligator is also equipped with a MAP editor, so if you really want to contribute the game development, take some time create some maps and submit to game's official website http://allegator.sourceforge.net/ . On the game website there are few other variations of the Alex the Alligator as well as extra game maps.
Explanation on which keys can be used to create maps is found in the game manual, e.g.:

debian:~$ man alex4

If you have downloaded some extra game maps from the game sourceforge website, to load them you can use:

Shift+L

Will Alex succeed in saving his girlfriend ? It's up to you 😉


How to fix wrongly configured timezone in Debian GNU/Linux and Ubuntu

Wednesday, August 3rd, 2011

Reading Time: < 1 minute
During the install of a new Debian GNU/Linux server I was in a real hurry, so I mistakenly choose a wrong timezone of US/Pacific

As a consequence the server date and time was incorrect and I had to fix that to adjust to the proper server location which of this case was:Europe/London

Here is the quick fix:

debian:~# dpkg-reconfigure tzdata

Next I choose my timezone from the ncurses interface navigating with arrow keys and used ntpdate to synchronize the time for the server like so:

debian:~# ntpdate time.nist.gov
3 Aug 16:02:26 ntpdate[26658]: adjust time server 192.43.244.18 offset 0.000802 sec

Done 😉