vi bashrc

Virtual EnvironmentsWhy install a virtual environment?Because of the different development environment, there will be many version differences, in order to facilitate the management and use of the version, so we use virtual.Why do you usePIP3

Self-study Linux instruction analysis-alias1 · command formatAlias name= ' command line 'Alias name= ' command ' I am Free Mans. " ‘2. Command functionDisplays and modifies aliases.1) to prevent human error by adding some protection parameters to

How to install ARM-LINUX-GCCTo Install the cross-compilation toolchain:1, first log in as root user2, copy arm-linux-gcc-4.3.2.tgz to the root directory in the TMP folder3. Unzip the command tar xvzf arm-linux-gcc-4.3.2-c/Note that the above command

First day1. The relationship between system software, application software, users, etc.??????The shell is communicated to the user. It deals with users in the form of commands. We win7 and so on to use the graphical interface to deal with users.2,

Shell IntroductionThe shell is a command interpreter that provides interaction between the user and the machine, supports specific grammars, such as logical judgments, loops, and each user can have their own specific shellCentOS7 default shell is

1. What is an environment variable (PATH)In Linux, when the command is executed, the system will follow the path's settings to search for execution files under the paths defined by each path, and the first files to be searched are executed first.We

Get ready(1) Create the JDK folder in/usr/local/usr/local/jdk (2) The JDK package MV to the/USR/LOCAL/JDK directory (3) Performing TAR-XZF jdk1.8.0_51.tar.gz 2. Execute the command:(1) If non-root user: sudo vi ~/.bashrc(2) Add at least:

When doing development, because the PHP version of the computer developed with the release of the PHP version inconsistent, it is easy on-line, found that due to the impact of the version caused some bugs, but do not want to change the PHP version

sudo apt-get install python-virtualenv Virtualenv Py2 CD Py2 CD bin Start the virtual environment: source Activate Deactivate Virtualenv-p/usr/bin/pyhon3 Py3 CD Py3 CD bin SOURCE Activate Pip

First, download First of all, of course, is to download. Address: www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html Select a different version as needed. Second, decompression Unzip the. tar.gz file that you

Check JDK version, uninstall OPENJDK version (JDK and openjdk differences do not repeat here) Check the java–version, javac–version command view version first (figure I) After checking JDK version 1.7.0.45; then enter Rpm-qa|grep Java view (figure

There are a number of ways to configure JDK environment variables on the web, but almost always fail the next time you restart your computer, or sometimes. Let me show you a trick. First extract your JDK under Oracle, I take jdk1.7.0_25 as an

Today, Chiang Kai-shek has the dig command test effect when you are debugging DNSMASQ to create a local DNS server, but the default Linux system does not seem to have the dig support component installed. Then there is the error prompt

$PATH: determines which directories the shell will look for commands or programs, and the PATH value is a series of directories that Linux searches for and compiles links to when you run a program. Edit the PATH declaration in the format: Path=

Today, another Linux production environment to build. This is a lot of steps, very cumbersome and have to do things. Although many times, but there are many steps, orders do not remember, every time looking for information is troublesome, so take

This article is an example of how Python implements tab automation and History command management. Share to everyone for your reference. The specific analysis is as follows: Python startup file, which is the environment variable pythonstartup

Download Package Web page: http://pkgs.fedoraproject.org/repo/pkgs/man-pages-zh-CN/manpages-zh-1.5.1.tar.gz/13275fd039de8788b15151c896150bc4/ The above URL is the installation package page, open the above URL, click the Man manual download link, pop-

The following explanations are found in the online Help file that you see Using the Manbash command:. bashrc-the individual Per-interactive-shell startupfile. This file mainly saves personal personalization settings, such as command aliases, paths,

Environment Virtual machine: VirtualBox ubuntu:14.04 hadoop:2.6 installation 1. Create a Hadoop user sudo useradd-m hadoop-s/bin/bash "Ubuntu terminal copy and paste shortcut keys" "In the Ubuntu Terminal window, the copy and paste shortcuts need

Pre-installation media preparation:Dbi-1.636.tar.gzDbd-mysql-4.037.tar.gzEtl.tarPerl:First part MySQL database installationLinks such as: http://jingyan.baidu.com/article/a378c9609eb652b3282830fd.htmlPart II PERL module installation1) Check the