Saturday, June 23, 2012
Thursday, June 21, 2012
grub2 - Grub Error in Ubuntu 12.04 after upgrade from 11.10
Boot into the Ubuntu Live Cd and open terminal.
1. Identify Ubuntu partition:
2. Mount it ( replace sda1 with the Ubuntu partition number):
3.Reinstall grub:
1. Identify Ubuntu partition:
sudo fdisk -l
2. Mount it ( replace sda1 with the Ubuntu partition number):
sudo mount /dev/sda1 /mnt
3.Reinstall grub:
sudo grub-install --root-directory=/mnt /dev/sda sudo update-grub
Solution from: grub2 - Ubuntu 11.10 not showing up in GRUB bootloader after update and restart :( - Ask Ubuntu.
Wednesday, June 20, 2012
Friday, June 15, 2012
Installing Oracle-JDK in Ubuntu
Download JDK from ORacle. Run Terminal:
#Next line will add java to symlink
Or, better if you can set environment variable by adding the following lines at the bottom of .bashrc by "gedit ~/.bashrc":
You can now check if the java is installed properly in terminal:
These will return the version of java and javac.
chmod u+x jdk-6u31-linux-i586.bin ./jdk-6u31-linux-i586.bin sudo mv jdk1.6.0_31 /usr/lib/jvm/
#Next line will add java to symlink
sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk1.6.0_31/bin/java" 1 sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/jdk1.6.0_31/bin/javac" 1
Or, better if you can set environment variable by adding the following lines at the bottom of .bashrc by "gedit ~/.bashrc":
export JAVA_HOME=/usr/lib/jvm/jdk1.7.0_03 export PATH=$PATH:$JAVA_HOME/bin
You can now check if the java is installed properly in terminal:
java -version javac -version
These will return the version of java and javac.
Tuesday, April 24, 2012
Ubuntu Command Collection
- install debian file:
sudo dpkg -i package_name.deb
- install dependency:
sudo apt-get -f install
- install software:
sudo apt-get -f install package_name
- install bundle file:
sudo sh file_name.bundle
- install bin/sh file:
chmod +x file_name.bin ./file_name.bin
- Installing WIRESHARK's dumpcap without allowing non-root users to capture packets:
setcap 'CAP_NET_RAW+eip CAP_NET_ADMIN+eip' /usr/bin/dumpcap
- Find the MAC address:
ifconfig
References:
Labels:
deb,
Debian,
Dpkg,
Linux,
package name,
TIPS 'N' TRICKS,
Ubuntu
Monday, April 9, 2012
Generics are not supported in -source 1.3 error in Maven Project
When compiling via maven project, you may have encountered following error:
To solve this you must add the below lines at your pom.xml :
generics are not supported in -source 1.3 error in Maven Project. use -source 5 or higher to enable generics.
Annotation is not allowed in -source 1.3 use -source 5 or higher to enable annotation.
To solve this you must add the below lines at your pom.xml :
org.apache.maven.plugins maven-compiler-plugin 1.5</source> 1.5
Labels:
annotation,
DEVELOPMENT,
error,
generics,
JAVA,
maven,
netbeans,
pom
Monday, February 13, 2012
Tuesday, January 17, 2012
C++ : keywords
32 keywords defined by standard C.
A list of some commonly used extended keywords:
All C (and C++) keywords are lowercase. Also, uppercase and lowercase are
different: else is a keyword; ELSE is not.
| auto | double | int | struct |
| break | else | long | switch |
| case | enum | register | typedef |
| char | extern | return | union |
| const | float | short | unsigned |
| continue | for | signed | void |
| default | goto | sizeof | volatile |
| do | if | static | while |
A list of some commonly used extended keywords:
| asm | _cs | _ds | _es |
| _ss | cdecl | far | huge |
| interrupt | near | pascal |
All C (and C++) keywords are lowercase. Also, uppercase and lowercase are
different: else is a keyword; ELSE is not.
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