Saturday, July 7, 2012
Thursday, July 5, 2012
How to use crontabs in Linux
How to create a crontab
Open your terminal and run:
Usually this should open up your crontab file in nano. Today, we will run our crontab to execute hourly:
If you would like to run other scripts, obviously you simply change the "/bin/sh" to whatever you would like(python, perl, bash, etc...).
minute 0-59
hour 0-23
day 1-31
month 1-12
day-of-week 0-7 (0/7 Sunday, 1 = Monday, 2 = Tuesday, etc...)
command-line the command to execute
Open your terminal and run:
crontab -e
This will be for your user. Usually this should open up your crontab file in nano. Today, we will run our crontab to execute hourly:
0 * * * * /bin/sh /PATH/TO/SCRIPT
Now, this runs hourly shell scripts(/bin/sh).If you would like to run other scripts, obviously you simply change the "/bin/sh" to whatever you would like(python, perl, bash, etc...).
minute 0-59
hour 0-23
day 1-31
month 1-12
day-of-week 0-7 (0/7 Sunday, 1 = Monday, 2 = Tuesday, etc...)
command-line the command to execute
Tuesday, July 3, 2012
How to Extract a Tar Ball on Linux
How to extract a Tar Ball in Linux
In Linux, when you would like to extract a "tar.gz" file, you need to open your terminal and type this in:
In Linux, when you would like to extract a "tar.gz" file, you need to open your terminal and type this in:
tar -zxvf FILE.tar.gz
tar xvjf FILE.tar.bz2
tar xvjf FILE.tar.bz2
How to install the Android SDK
How to install the Android SDK
First, install Eclipse here.
After installing Eclipse, install the Android ADT plugin for Eclipse:
- Click on Help > Then click on
- Install New Software Copy and paste this and click "Add":
Eclipse will ask you to restart. After you restart, the Android ADT plugin will ask you to either download and install the Android SDK for you or you can do it yourself.
If you are using an existing SDK or downloading it yourself:
Download the SDK:
The file should look like:
Extract the file to your /home/USER directory by either double clicking on the file or command line:
Next you will go into Eclipse and use the Android ADT plugin to use with the /home/USER/android-sdk that you have extracted.
First, install Eclipse here.
After installing Eclipse, install the Android ADT plugin for Eclipse:
- Click on Help > Then click on
- Install New Software Copy and paste this and click "Add":
https://dl-ssl.google.com/android/eclipse/
- Click "OK" Eclipse will ask you to restart. After you restart, the Android ADT plugin will ask you to either download and install the Android SDK for you or you can do it yourself.
If you are using an existing SDK or downloading it yourself:
Download the SDK:
http://developer.android.com/sdk/index.html
The file should look like:
android-sdk_r20-linux.tgz
Extract the file to your /home/USER directory by either double clicking on the file or command line:
tar -zxvf android-sdk_r20-linux.tgz
Installing Android Versions
- Go to Window > then click on Android SDK Manager
From here, you can select the Android Packages that you would like.
How to remove bloatware that comes with Ubuntu
How to safely strip(uninstall) Ubuntu Bloatware
Package List (Last Updated 10/4/2012):
Remove Unity Completely:
http://blog.burrowsapps.com/2012/09/ubuntu-completely-remove-unity.html
Make sure to have a new Desktop(default theme):
http://blog.burrowsapps.com/2012/09/ubuntu-install-gnome-3.html
Package List (Last Updated 10/4/2012):
sudo apt-get remove --purge --ignore-missing gbrainy aisleriot gbrainy gnome-games-* gnome-sudoku gnomine libgme0 mahjongg bogofilter* empathy* thunderbird* remmina gwibber* tomboy avahi-daemon transmission-* whoopsie samba* modemmanager ubuntuone* rhythmbox* activity-log-manager-common python-zeitgeist zeitgeist-core deja-dup pidgin* apport*
* Note: this is for standard UnityRemove Unity Completely:
http://blog.burrowsapps.com/2012/09/ubuntu-completely-remove-unity.html
Make sure to have a new Desktop(default theme):
http://blog.burrowsapps.com/2012/09/ubuntu-install-gnome-3.html
How to install Google Chrome on Ubuntu
How to install Google Chrome
Fast Way:
Download the ".deb" file and install through the software store.
Command Line:
First, you need to get the repository:
Next, you need to edit your source list:
Add this:
Crtl + x, then Enter to save
Followed by updating your package list:
Finally install Google Chrome:
Fast Way:
https://www.google.com/intl/en/chrome/browser/
Download the ".deb" file and install through the software store.
Command Line:
First, you need to get the repository:
wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add -
Next, you need to edit your source list:
sudo nano /etc/apt/sources.list
Add this:
deb http://dl.google.com/linux/chrome/deb/ stable main
Crtl + x, then Enter to save
Followed by updating your package list:
sudo apt-get update
Finally install Google Chrome:
sudo apt-get google-chrome-stable
How to install Dropbox on Ubuntu
How to install Dropbox - the fastest way
Go to their install page:
Download the ".deb" file and it will install through the store.
Go to their install page:
https://www.dropbox.com/install?os=lnx
Download the ".deb" file and it will install through the store.
How to fix Eclipse library errors on Ubuntu
Here is a list of Eclipse Errors:
Eclipse - Indigo
On start, it will load and then soon crash stating that the
Ubuntu 12.04 32 bit
Ubuntu 12.04 64 bit
Eclipse - Indigo
On start, it will load and then soon crash stating that the
java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons:
no swt-gtk-3740 in java.library.path
no swt-gtk in java.library.path
Can't load library: /.swt/lib/linux/x86_64/libswt-gtk-3740.so
Can't load library: /.swt/lib/linux/x86_64/libswt-gtk.so
no swt-gtk-3740 in java.library.path
no swt-gtk in java.library.path
Can't load library: /.swt/lib/linux/x86_64/libswt-gtk-3740.so
Can't load library: /.swt/lib/linux/x86_64/libswt-gtk.so
Ubuntu 12.04 32 bit
sudo ln -s /usr/lib/jni/libswt-* ~/.swt/lib/linux/x86_64/
Ubuntu 12.04 64 bit
sudo ln -s /usr/lib/jni/libswt-* ~/.swt/lib/linux/x86_64/
http://stackoverflow.com/questions/10165693/ubuntu-eclipse-cannot-load-swt-libraries-not-opening
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