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Step 1: Download jdk-7-linux-i586.tar.gz
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Http://download.oracle.com/otn-pub/java/jdk/7/jdk-7-linux-i586.tar.gz wget-c
(Note: If the download fails, we recommend that you use thunder to download it and copy it to the Linux system .)Step 2: unzip and install
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Sudo tar zxvf./jdk-7-linux-i586.tar.gz-C/usr/lib/jvm
Cd/usr/lib/jvm
Sudo mv jdk1.7.0/java-7-sun
Step 3: Modify Environment Variables
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Vim ~ /. Bashrc
Add:[Plain]
Much has been said about how ungodly expensive Windows Vista is going to be, but what is it really worth? While software is rarely priced based on what it actually
Does , I figured I 'd take a unique approach toward figuring out the real value of Vista, with a feature-by-feature analysis of how much the upgrades are worth to the user. are there other ways to get the same features? How Much Do alternatives cost? Here's my blow by blow Analysis of Vist
following lines to the file:
Java_home = opt/jdk1.6.0 _ 07Classpath = $ java_home/lib :.Path = $ path: $ java_home/binExport java_home classpath path
Save and exit. Run the following command:
[Root @ localhost etc] source/etc/profile
This allows the configuration to take effect without restarting the computer.
3) change the default JVMNow you need to run the alternatives command to instruct fedora to recognize Sun's JVM.
[Root @ localhost
Http://deeplearning.net/software/theano/install_ubuntu.html#install-ubuntuThe above link is the official website installs the tutorialInstalling Theano in Ubuntu is a lot easier to install on Windows.If you are an Ubuntu 16.04 systemThe installation process is as follows:sudo apt-GetInstall python-numpy python-scipy python-dev python-pip python-nose g++ libopenblas-Dev gitsudo pip install theano# cuda7.5Don'T support the default g++ version. Install an supported version and make it the default.s
for Linux1.4 TensorFlow 0.11TensorFlow GitHub above mentioned 4 kinds of installation methods, this tutorial using the four source code installationVIRTUALENV InstallationAnaconda InstallationDocker InstallationInstalling from sourcesHttps://github.com/tensorflow/tensorflow ()Description: I chose the Linux GPU Python2(2) Click Python 2 to start the download.2. Installing the ubuntu16.04 LTS systemFor details, please see the previous Notes Windows System installation Ubuntu dual system3. Install
is where my software is stored and can be stored in/user/lib/in3: Configured as default JDK version sudo update-alternatives--install/usr/bin/java Java/home/share/tools/jdk1.8.0_45/bin/java -sudo update-alternatives--install/usr/bin/javac Javac/home/share/tools/jdk1.8.0_45/bin/javac -What this means is to create two soft connections: [email protected]:~$ ll/usr/bin/Java lrwxrwxrwx1Root root A -- to- A +:
Ubuntu 16.04 itself is a python, and he's a 2-self. X and 3.X, two versions, the default is 2. X. Here's a note of how to switch between versions and how to switch the Python version to 3. The method under X.
1. View the installed Python version of the Ubuntu system and the Python version currently in use
Ls/usr/bin/python*python--version
Or
2. Set update-alternatives switch python version
Show Python instead of version information
Update-
use the source command to make it effective source ~/. Profile2.4 Change the default JDK version to see the Java version and priority of the system installedsudo update-Alternatives--dispaly Javathe system is installed by default only OPEN-JDK, and the priority is 1051, set a higher priority to Oracle's JDK, such as 1200, in the terminal window to execute the following command:sudo update-Alternatives--
format for installing Java 6 is as follows:
Java 6 (for Android 2.1 + ):
$ Sudo add-Apt-repository "Deb http://archive.canonical.com/lucid partner"
$ Sudo add-Apt-repository "Deb-Src http://archive.canonical.com/ubuntu lucid partner"
$ Sudo apt-Get update
$ Sudo apt-Get install sun-java6-jdk
If you want to switch to the Java version (when multiple Java versions are installed), enter the following command:
Sudo Update-alternatives -- config Java
Sudo
As we all know, GCC does not support "make Uninstall ". A recommended installation method is to install GCC in a path you specify. When you do not need a GCC version number, you only need to remove the corresponding version number.
If you already have an old version number in your system, the simplest method is:
1) join? Personal package archive in the repositories
2. repositoris)
3) upgrade procedure
sudo add-apt-repository ppa:ubuntu-toolchain-r/testsudo apt-get updateJoin? New Ppa (peronal
Step 1: Check the version and installed version
Lee @ Lee :~ $ Ls/usr/bin/GCC *
/Usr/bin/GCC/usr/bin/gcc-4.5/usr/bin/gcc-4.6
If 4.5 is missing, install it.
Sudo apt-Get install gcc-4.5 g ++-4.5
G ++-V
Gcc-V
Step 2: Add options
Sudo Update-alternatives -- install/usr/bin/GCC gcc/usr/bin/gcc-4.5 40
Sudo Update-alternatives -- install/usr/bin/GCC gcc/usr/bin/gcc-4.6 30
Sudo Update-
=.: $ JAVA_HOME/lib: $ JAVA_HOME/jre/lib
Next
# Source/root/. bashrc switch to your user and then under source.# Echo $ JAVA_HOME/Usr/java/java7
If openjdk is not installed, enter
#/Usr/java/java7/bin/java-version
Now let's start the link. add to the bin of the system and use the update-alternatives command to maintain the soft connection of the system. update this command to let the system know which command to use. the last parameter is priority. h
Switch GCC, G ++, and gfortran versions in Ubuntu
Step 1: use which gcc, which g ++, and which gfortran to view the location. My result is/usr/bin/gcc; /usr/bin/g ++ and/usr/bin/gfortran
Part 2: first, let's take a look at the gcc commands installed in your Ubuntu: ls/usr/bin/gcc *-l;
Gcc/g ++ in ubuntu 12.04 is 4.6. We will downgrade the default system to 4.4.
$ Sudo apt-get install gcc-4.4
$ Sudo update-alternatives -- install/usr/bin/gcc/usr/bin/gc
may have the default JDK, such as openjdk, the following work is required to set the installed JDK to the default JDK Version. Run the code: [plain] sudo update-alternatives -- install/usr/bin/java/usr/lib/jvm/java-7-sun/bin/java 300 sudo update-alternatives -- install/ usr/bin/javac/usr/lib/jvm/java-7-sun/bin/javac 300 sudo update-alternatives -- install/usr/bi
current shell then uses SSH to link localhost without having to enter a password.$ ssh localhostInstalling Java$ java -versionIf this command can be correctly viewed in Java version then Java has been fighting for installation, if not, be sure to install Java first.
step1: Download java (jdk-*u**-os-x64.tar.gz) here.
SETP2: Switch to the folder where Java is located and unzip.
$ cd Downloads/ $ tar zxf jdk-7u71-linux-x64.gz $ ls jdk1.7.0_71 jdk-7u71-linux-x64.
step3
When configuring Hadoop, there is no JDK found when you format HadoopI used Red Hat is 32-bit, no ready-made 32-bit, hit Java, found that the machine has Java, and found a bit of its locationFound jdk-1.6.0.which Java[email protected] hadoop-1.1.2]# which Java/usr/bin/java[Email protected] hadoop-1.1.2]# Ls/usr/bin/java/usr/bin/java[Email protected] hadoop-1.1.2]# ls-l/usr/bin/javalrwxrwxrwx. 1 root root June 03:00/usr/bin/java-/etc/alternatives/java[
This article was reproduced from: http://blog.csdn.net/lincyang/article/details/42024565Android L recommended using the JDK7 compiler, which is the natural evolution of the law, just like 4 years ago to compile Android 1.6 needs to use JDK5.Multiple versions of the JDK can coexist, and you can switch them at any time using the Update-alternatives tool. The procedures for installing OPENJDK and Oracle JDK (Sun) and switching versions are described belo
reduce Ubuntu Central GCC and g++ version ofThe gcc/g++ in Ubuntu 12.04 are all 4.6, dropping it to 4.4.The procedure is as follows:One, reduce the GCC version1. $sudo Apt-get Install gcc-4.42, $sudo update-alternatives--INSTALL/USR/BIN/GCC gcc/usr/bin/gcc-4.4 40 (where "40" is the priority, the higher the value the higher the priority)3, $sudo update-alternatives--INSTALL/USR/BIN/GCC gcc/usr/bin/gcc-4.6 60
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