Edit $PATH After Anaconda Installed If 'conda' Command Can't Be Found

Anaconda is a Python package utility which contains many great packages for scientific and mathematical computation. Users just install it once and it’s all set.

Problem after installation:

The ‘conda’ command can’t be found after Anaconda installed.

Solution:

Edit the paths file in the user’s root directory according to the shell used( bash or zsh).

if using bash shell, edit .bashrcfile.
if using zsh shell, edit .zshrcfile.

Add the following line to the end of the file and save.

export PATH="$HOME/anaconda/bin:$PATH"

Reopen the terminal and it’s all done!

Docker Command Note

• Version
  $ docker --version
  Docker version 1.12.0, build 8eab29e

  $ docker-compose --version
  docker-compose version 1.8.0, build f3628c7

  $ docker-machine --version
  docker-machine version 0.8.0, build b85aac1

• docker pull ubuntu:14.04 download latest ubuntu image

• docker images list all images

• docker run

  • deamon mode :
    docker run -d -p 80:80 [ubuntu(image name)] --name webserver nginx
    -d : Run container in background and print container ID
    -p : Publish a container’s port(s) to the host
    80: out/ 80: in
    –name : Assign a name to the container
    nginx : IMAGE

  • interactive mode :
    docker run -it ubuntu:14.04 | bash
    (啟動一台 ubuntu instance，並且切入bash模式)
    -i: interactive mode, 讓操作者擁有互動模式
    -t: terminal, 讓操作者可以使用終端機操作 instance

• docker ps show containers just running
  docker ps -a show all containers (default shows just running)

• docker start start one or more stopped containers

• docker stop stop one or more running containers

• docker kill kill one or more running containers

• docker rm remove one or more containers

• docker rmi remove one or more images

• docker port xxxx list port mappings or a specific mapping for the running container

Ubuntu Commands

• sudo apt-get update
• sudo apt-get dist-upgrade

Python And Jupyter Installation

Install Python in Mac OS X

1. Using brew is the fastest way.

python2

> brew install python

python3

> brew install python3

2. Check The Version

> python --version
Python 2.7.10

> python3 --version
Python 3.5.1

3. Check The Location of Python and Setup The Path

Mac OS X has built-in Python 2.7. By using ‘which’ command to check the location where Python installed, you can find out whether is it the system built-in python.

> which python
usr/bin/python  ⇒ system built-in 

In order to access to the correct version of Python installed, we need to add /usr/local/bin to $PATH.

You can use vim to edit the /etc/paths

> sudo vim /etc/paths

make sure that /usr/local/bin is before /usr/bin.

or just…

> export PATH=/usr/local/bin:$PATH

Close the terminal and reopen it again to make sure all the settings are effective.

Then check the location of Python again.

> which python 
/usr/local/bin/python

> which python3
/usr/local/bin/python3

Done!

If you always using Python 3, you can edit the setting:

> vim ~/.bash_profile

and add:

alias python="python3"

Installing Jupyter

Python2

> pip install jupyter

Python3

> pip3 install jupyter

After installation, using following command to start jupyter.

> jupyter notebook