Selasa, 22 Agustus 2017

Sabtu, 20 Mei 2017

Disable auto start apache2 linux

sudo update-rc.d apache2 remove
You can use the argument defaults to add apache2 back into the autostart
sudo update-rc.d apache2 defaults
Then you're able to enable/disable
sudo update-rc.d apache2 disable
sudo update-rc.d apache2 enable

Jumat, 02 Desember 2016

Problem can't find -lgfortran

Just make sure you:
gcc --version
And
gfortan --version
Is the same.
/usr/bin/ 
Contains the different versions.
Eg: If gcc--version returns 4.7.3 and gfortran --version 4.8, a simple hack could be to do the following.
sudo cp /usr/bin/gcc-4.8 /usr/bin/gcc

Rabu, 30 November 2016

Problem updating R

  • Explaining the issue
    Setting up r-base-core (3.3.2-1trusty0) ...
    Preserving user changes to /usr/share/bash-completion/completions/R (renamed from /etc/bash_completion.d/R)...
    mv: cannot stat ‘/usr/share/bash-completion/completions/R’: No such file or directory
    dpkg: error processing package r-base-core (--configure):
     subprocess installed post-installation script returned error exit status 1
    
    The post-installation script (/var/lib/dpkg/info/r-base-core.postinst) didn't check if /usr/share/bash-completion/completions/R file exist before trying to move it.
  • Quick fix / Workaround
    1. Just create copy of the file.
      sudo cp /etc/bash_completion.d/R /usr/share/bash-completion/completions/R
      
    2. Fix the interrupted installation
      sudo apt-get -f install
      
  • Definitive fix
    As bodhi.zazen said, raise a bug report to the project.

Sabtu, 08 Oktober 2016

How to Import JavaCV libraries to Android Project

If you haven't yet installed the Android Development Environment, you can follow this link which contains everything you need to get started quickly. Watch the tutorial video and follow the instructions underneath to install Eclipse, the Integrated Development Environment (IDE) for Android development and create a new project.

Once you have installed everything and have created the project, use the following procedure to import JavaCV libraries to the Android project:
  1. Download the JavaCv libraries:
    a. From this link download "javacv-0.7-bin.zip" and extract the files:
    - javacpp.jar
    - javacv.jar
    - javacv-android-arm.jar
    b. From this link download "javacv-0.7-cppjars.zip" and extract the files:
    - opencv-2.4.8-android-arm.jar
    -  ffmpeg-2.1.1-android-arm.jar

  2. Go to File > New > Folder, select your project as parent folder, type "libs/armeabi" as Folder name, and click Finish.

  3. Copy javacpp.jar and javacv.jar into the "libs" folder.

  4. Extract all the *.so files from javacv-android-arm.jar, opencv-2.4.8-android-arm.jar, and ffmpeg-2.1.1-android-arm.jar directly into the "libs/armeabi" folder, without creating any of the subdirectories found in the JAR files. (The easiest way to extract the .so files from the .jar is by using 7-ZIP software which can be downloaded here).

  5. Navigate to Project > Properties > Java Build Path > Libraries and click "Add JARs...".

  6. Select both javacpp.jar and javacv.jar from the "libs" folder.

Finally,import JavaCV functions to your code
import static com.googlecode.javacv.cpp.opencv_core.*;
import static com.googlecode.javacv.cpp.opencv_imgproc.*;
import static com.googlecode.javacv.cpp.opencv_highgui.*;
and use some sample code to check that everything is working correctly.

Jumat, 16 September 2016

Find Out Ram Speed, Make, Form Factor, Type and Other Information

Find Out Ram Speed, Make, Form Factor, Type and Other Information

You need to use the dmidecode command:
# dmidecode --type 17
OR
# dmidecode --type memory
OR
# dmidecode -t 17
Sample outputs:
 # dmidecode 2.11
SMBIOS 2.5 present.
Handle 0x0017, DMI type 17, 27 bytes
Memory Device
 Array Handle: 0x0016
 Error Information Handle: No Error
 Total Width: 72 bits
 Data Width: 64 bits
 Size: 2048 MB
 Form Factor: DIMM
 Set: 1
 Locator: DIMM1A
 Bank Locator: Bank1
 Type: DDR2
 Type Detail: Synchronous
 Speed: 667 MHz
 Manufacturer: 5185
 Serial Number: 05009F22
 Asset Tag: Not Specified
 Part Number: 72T232220HFA3SB

Features for: 99U5428-018.A00LF RAM 8 GB DDR3L 1600 Mhz 1.35 V Kingston Kingston

Allgemeine Daten

Condition

 NEW

Technical Data

Capacity

 8 GB

Typ

 DDR3L-RAM

Memory modul

 PC3L-12800

Clockrate (MHz)

 1600 MHz

Number of memory chips

 

Sabtu, 23 Juli 2016

Install atom di linux

sudo add-apt-repository ppa:webupd8team/atom sudo apt-get update sudo apt-get install atom