Check the current Python version.
$ python --versionPython 3.4.2
2. modify the Python version at the system level.
We can use update-alternatives to change the Python version for the entire system. Log on as a root user. first, list all available python alternative versions:
# update-alternatives --list pythonupdate-alternatives: error: no
Sumo Paint
Springpad
More information on Springpad
Sports Illustrated Snapshot
Men's Paradise
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Cloud9
JavaScript nemesis, with it, mom no longer have to worry about my Code ~
More information on Cloud9
HootSuite
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Sliderocket
Are you a "sliding control"? Try this software
.
Wunderlist
Wunderlist is a cloud mission management tool that supports the iphone, IPad, Android, Windows, Mac OS X, and web ease of sync. Realize the real sense of cross-platform operation. Practicality, operability can be called first-class.
Live CSS Editor
This extension provides a text box to display any HTML page, edit the CSS code freely, and see the results immediately. I use it for quick editing every day.
Browser Compatibility detector
Browser compatibility Detector
creators, Christian Sanz and Reuben Katz, did not initially feel inappropriate.
Endless loop
The National centre for female and Information Technology reported that only six of the 100 largest technology companies are women at the helm. CEO of hootsuite le'an Holmes noted that only 20 of 50 engineers and developers in his company are women. Fewer women in the technical field will have a vicious circle, because the fewer women in service, the lower th
Currently, HTML5 is a hotspot in the Web development field and is changing the way developers develop Web applications. This article shows 10 outstanding HTML5-based applications. These amazing HTML5 applications will bring you to experience the charm of HTML5. I believe you will have unlimited expectations for future Web development after reading these examples.CSS3 Maker
CSS3 Maker is an online CSS3 effect generation tool developed based on html5. it is very good.
UCEMag Scarlet Fever
UCE is a
. Enter the following command on the terminal:
Sudo update-alternatives -- install/usr/bin/gcc/usr/bin/gcc-4.4 40
Sudo update-alternatives -- install/usr/bin/gcc/usr/bin/gcc-4.1 30
Set the default GCC version. Run the following command:
Sudo update-alternatives -- config gcc
Result:
There are 2 choices for the alternative gcc (providing/usr/bin/gcc ).Se
->/etc/alternatives/java*
Alternatives is a multiple version management software under Linux, which can be used to achieve version switching of JDK, which is described later. First come to the alternatives directory to see what's on the ground.
fordreamxin@compiler207:/etc/alternatives$ ls java*
Java java.1.gz javac
Ubuntu GNU/Linux 12.04 lts (precise pangolin) released. I wanted to manually install the Sun JDK 6 and 7 on Ubuntu.
Installing Sun JDK 6 on Ubuntu 12.04:
Download the Sun JDK 6 BinFrom here.
Make the BIN file executeable:
chmod +x jdk-6u32-linux-x64.bin
Extract the BIN file:
./jdk-6u32-linux-x64.bin
Move extracted folder to this location:
sudo mv jdk1.6.0_32 /usr/lib/jvm/
Install new Java source in system:
sudo update-alternatives --ins
Tags: des style http color java using OS StrongRecently need to do JSP project, deployed in Ubuntu, the weekend time to configure the Nginx + PHP + mysql + phpmyadmin + tomcat environment, from the Windows C # turn around, how much some do not adapt, estimated to go the whole stack direction. By the way, the introduction of the configuration method, complete under the console. 1.1 Common
Start Terminal
Ctrl+alt+t
Using the root user
Sudo–sh
View process
been looking !) E.g.: grep-R jerry/etc (search for all directories in/etc with files containing jerry (parameter-R indicates all files) If you only want to list file names: www.2cto.com grep-R-l jerry/etc (-l only lists file names) 01root @ why :~ # Grep-R-l jerry/etc02/etc/passwd03/etc/shadow-04grep:/etc/alternatives/ghostscript-current/Resource/CMap/Hojo-EUC-H: there is no file or directory 05 grep:/etc/alterna
First, install the JDK:RPM Installation:# RPM-IVH jdk-8u45-linux-x64.rpmIn the case of a Debian system, tar. Unzip tar.gz to/usr/local/java/and create the corresponding link file. Such as:$ ll/usr/local/java/Total usage 4lrwxrwxrwx 1 root root 6 June 22:31 Default-latestdrwxr-xr-x 8 UUCP 143 4096 April 11 01:26 jdk1.8.0_45lrwxrwxrwx 1 root root 28 June 22:30 latest-/usr/local/java/jdk1.8.0_45/Second, the configuration:Create the/etc/profile.d/java.sh and edit the configuration file:$ cat/etc/pro
GCC is the GNU exclusive C/C ++ compiler. Because GCC has compatibility issues, you must use the specified version of GCC to compile and pass the code, therefore, we should switch to the appropriate GCC compiler in a timely manner.
1. Brief description:In general, the Compilation Program uses:/usr/bin/GCC
In fact, this/usr/bin/GCC is just a symbolic link, it points to/etc/alternatives/GCC, and/etc/alternatives
mockobjects-jdk1.4.x86_64:mockobjects for 1.4 jdk
2. Install JDK
[Root@localhost ~]# yum install java-1.6.0-openjdk.x86_64 ...
Total download size:44 M are this
OK [y/n]: Y
3. After the installation is complete, verify
[Root@localhost ~]# java-version
java Version "1.6.0_37"
OpenJDK Runtime (Environment IcedTea6) ( rhel-1.13.9.4.el5_11-x86_64)
OpenJDK 64-bit Server VM (build 23.25-b01, Mixed mode)
4. The default installation path via Yum is
/usr/lib/jvm
[
Original article name: 7 better alternatives to common Windows appsTranslator:Fish that cannot reach the shore {ttzhang}Link: http://www.makeuseof.com/tag/enhance-or-replace-integrated-windows-applications-with-these-great-alternatives/
There is no doubt, Microsoft is going to dominate the operating system market through Windows 7. who knows where we will be after that. at that point we will likely be
[Odroid-pc] ubuntu12.04 jdk-6u45-linux-x64.bin, jdk6u45linuxx64
1. Download jdk-6u45-linux-x64.bin.tar .**
2) Put it in a directory and decompress it.
3) execute the following command
Chmod + x jdk-6u45-linux-x64.bin
/Jdk-6u45-linux-x64.bin
Mkdir-p/usr/lib/jvmMv jdk1.6.0 _ 45/usr/lib/jvm
Update-alternatives -- install "/usr/bin/java" "java" "/usr/lib/jvm/jdk1.6.0 _ 45/bin/java" 1Update-alternatives -- insta
-alternatives to change the Python version for the entire system. Log in as root and first list all available Python alternative version information:# update-alternatives--list python update-alternatives:error:no alternatives for PythonIf the error message shown above is present, the alternate version of Python is not yet recognized by the update-
can use Update-alternatives to change the Python version for the entire system. Log in as root and first list all available Python alternative version information:# update-alternatives--list pythonUpdate-alternatives:error:no Alternatives for PythonIf the error message shown above is present, the alternate version of Python is not yet recognized by the update-
the installation process:Errors were encountered while processing:Libc6-dev:i386E:sub-process/usr/bin/dpkg returned an error code (1)Here's how to fix it:$ sudo apt-get install linux-libc-dev:i386$ sudo apt-get install libc6-dev:i386At this point, even if the build environment is complete, at least on my computer, so we can start to download the Android code to compile.Final installation Ia32-libs$ sudo apt-get install Ia32-libsUbuntu 14.04 x64 Configuring the Android 4.4 KitKat compilation env
to take effect.
$ . ~/.bashrc
Check the current Python version.
$ python--version
Python 3.4.2
2. Modify the Python version at the system levelWe can use Update-alternatives to change the Python version for the entire system. Log in as root and first list all available Python alternative version information:
# update-alternatives--list python
Update-alternatives
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