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Archive for the ‘Cheats’ Category

gconftool –recursive-unset /apps/panel

rm -rf ~/.gconf/apps/panel

pkill gnome-panel

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Phrank deserves an award for coming up with this hack.  NoCompiz uses Compiz-switch, a simple program that turns Compiz off if it is on and vice-versa.
NoCompiz will take one input – the name of a program – Turn off Compiz, run the program, then turn Compiz back on when the program exits.
This is very useful when you’re running Compiz all the time, but want to switch to a full-screen 3D game for awhile and not have to worry about Compiz messing with the game.

Just download noCompiz, unzip, and run the Install.sh installer from within Nautilus.
Download NoCompiz

edit the menu entry of the programme you want to toggle.

eg, nocompiz kdenlive

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Matt Parnell has an interesting method of speeding up his apt-get downloads by utilising the axel downloader.

A shell  script appropriately called apt-fast is available from the link above.

Here is what Matt has to say about the project:

The apt-fast script I have created is a little shellscript that increases the speed of apt-get by many times. You need to have the axel download accelerator installed, which is a simple, short process, but everything else is extremely straight forward. I started out downloading the upgrades for Kubuntu, at 32kb/s. Not terrible, but not that great. When I was done with the script here, I was getting up to ~850kb/s. That is great, huh?

To do this, you first need to download and install the axel download accelerator. It is really a good drop-in replacement for wget, as it is bash based. Once installed, we are ready to setup apt-fast. On K/Ubuntu apt-get install axel should do it.

Then, either find a package somewhere (or install it from a repo if one of them has it), or just download the latest apt-fast source from the link mentioned at the top of this post. Then, just place the script somewhere (/usr/bin or /usr/sbin is ideal), rename it to apt-fast (without the .sh extension), and sudo chmod +x apt-fast.

Once done, just use it like apt-get. To install a single package, make sure your database is up to date (apt-fast update), and run apt-fast install packagenamehere. Watch it download with incredible speed, and install your requested packages. To upgrade or dist-upgrade, do the same thing. Just use apt-fast dist-upgrade or apt-fast upgrade. That’s all there is to it!

Should your download stall for any number of reasons, you’ll need to do an apt-fast clean.

U8UNTU eLXR

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Getting into one of these situations is not uncommon. Sometimes packages aren’t packaged properly and you end up with a broken package which refuses to fix itself.

If you try:

sudo apt-get -f install

You will get a message like this:

Unpacking replacement vlc …
dpkg: error processing /var/cache/apt/archives/vlc_1.1.0-1ubuntu1_i386.deb (–unpack):
trying to overwrite ‘/usr/lib/vlc/plugins/access/libxcb_screen_plugin.so’, which is also in package vlc-nox 1.1.0-1~ppa1~maverick
dpkg-deb: subprocess paste killed by signal (Broken pipe)
Preparing to replace vlc-nox 1.1.0-1~ppa1~maverick (using …/vlc-nox_1.1.0-1ubuntu1_i386.deb) …
Unpacking replacement vlc-nox …
dpkg: error processing /var/cache/apt/archives/vlc-nox_1.1.0-1ubuntu1_i386.deb (–unpack):
trying to overwrite ‘/usr/lib/vlc/lua/playlist/anevia_streams.luac’, which is also in package vlc 1.1.0-1~ppa1~maverick
dpkg-deb: subprocess paste killed by signal (Broken pipe)
Errors were encountered while processing:
/var/cache/apt/archives/vlc_1.1.0-1ubuntu1_i386.deb
/var/cache/apt/archives/vlc-nox_1.1.0-1ubuntu1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

For reasons why this happens see point 7.6.1 from the debian policy manual

The fix for the problem is pretty easy if you know what to do:

sudo dpkg -i --force-overwrite <filename>

eg. sudo dpkg -i –force-overwrite /var/cache/apt/archives/vlc-nox_1.1.0-1ubuntu1_i386.deb

THANKS www.absolutelytech.com

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Although U8UNTU eLXR’s much vaunted migration to Blogetery.Com appears to have run aground, with the site disappearing off the Bermuda Triangle — word only now reaches us about the server getting impounded by authorities for copyright violations related to free and open source software — we can still report about two amazing command line / console apps. Both fit the bill for “wish I had this when I started out” with the new fangled Ubuntu craze featuring. Return to the Command Line by the Open Source Kid.

CLIcompanion


You can get CLIcompanion by running the following command in a Terminal:

bzr branch lp:~duanedesign/+junk/clicompanion

Move the .clicompanion file found in the clicompanion directory into your $HOME. You may need to select View –> Show hidden files (Ctrl +H) to see the .clicompanion file.
After moving the file return to the Terminal and run the following to move into the clicompanion directory:

cd clicompanion/

Start the application with the command:

python clicompanion.0.0.7.py

THANKS okiebuntu

2. Cheatsheet

A console app which pretty much does the same thing, but from the command line.

You can get the cheatsheet code with the command:

bzr branch lp:cheatsheet

then move into the directory
cd cheatsheet/
Make the file executable:
chmod +x cheatsheet.py
Then move it to one of your $PATH directories. You can view these with the command: echo $PATH
I chose /usr/local/bin/ for the next command
Move the file with the command:
sudo cp cheatsheet.py /usr/local/bin/cheat
Then from a Terminal you can view the command usage by running:
cheat –help

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Record Net Radio with Mplayer

Step 1: Download the playlist of your choice, say for instance you choose groovesalad, then the saved file on ur local disk will be groovesalad.pls.

Open a terminal and then change the file type to .txt.

 mv groovesalad.pls groovesalad.txt

Step 2: Install the awesome MPlayer and u can play the file from the terminal!

The command is as follows:

  mplayer -playlist groovesald.txt

Step 3: Downloading the entire stream silently

Again you can do it with MPlayer.

Here is the command:

mplayer -playlist groovesalad.txt -ao pcm:file=mystream.wav -vc dummy -vo null

You can use any file name you want, not mystream.wav necessarily!

If you observe the file mystream.wav, it will constantly get updated runtime! You can use it as long as you want, that of course is dependent on your disk size. If you wanna stop the download, use the break key CTRL+C to stop the process in the terminal.

Step 4: Install lame mp3 encoder and execute this command:

lame mytream.wav filename.mp3

There you have it! The entire stream you can carry on your ipod and listen mobile! The aforementioned method works for any playlist based internet radio! Most streams from shoutcast can also be recorded this way! I have simply broken down the steps accordingly, but you can also write a small shell script that is nothin more than a combination of the commands to execute the same in a single step. It’s pretty easy to do that!

THANKS: Skinwalker

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A common idiom to perform a safe reboot of a Linux computer which has otherwise locked up, using the magic Alt-SysRq-R-E-I-S-U-B key combination is the QWERTY (or AZERTY) mnemonicRaising Elephants Is So Utterly Boring”, “Reboot Even If System Utterly Broken” or simply remembering the word “BUSIER” backwards, is often useful. It stands for

unRaw      (take control of keyboard back from X),
 tErminate (send SIGTERM to all processes, allowing them to terminate gracefully),
 kIll      (send SIGKILL to all processes, forcing them to terminate immediately),
  Sync     (flush data to disk),
  Unmount  (remount all filesystems read-only),
reBoot.

This can prevent a fsck being required on reboot and gives some programs a chance to save emergency backups of unsaved work.

In practice, each command may require a few seconds to complete, especially if feedback is unavailable from the screen due to a freeze or display corruption. For example, sending SIGKILL to processes which have not yet finished terminating can cause data loss.

Alt-SysRq-R-E-I-S-U-B

FROM Wikipedia

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