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/usr/libexec/java_home -V command to get the list of installed JDKs.

For example:

Matching Java Virtual Machines (2):
    9.0.4, x86_64:	"Java SE 9.0.4"	/Library/Java/JavaVirtualMachines/jdk-9.0.4.jdk/Contents/Home
    1.8.0_161, x86_64:	"Java SE 8"	/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home

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ssh    -L local_port:service_host:service_port \
       -p ssh_server_port \
       -l ssh_server_username \
       -N \
       ssh_server_host

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ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null
brew install cmake

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*2vec papers

1. word2vec https://arxiv.org/abs/1310.4546
2. sentence2vec, paragraph2vec, doc2vec http://arxiv.org/abs/1405.4053
3. tweet2vec http://arxiv.org/abs/1605.03481
4. tweet2vec https://arxiv.org/abs/1607.07514
5. author2vec http://dl.acm.org/citation.cfm?id=2889382
6. item2vec http://arxiv.org/abs/1603.04259
7. lda2vec https://arxiv.org/abs/1605.02019
8. illustration2vec http://dl.acm.org/citation.cfm?id=2820907

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Creating virtual environment

python3 -m venv /path/to/new/virtual/environment

NOTE:

• Changed in version 3.5: The use of venv is now recommended for creating virtual environments.
• Deprecated since version 3.6: pyvenv was the recommended tool for creating virtual environments for Python 3.3 and 3.4, and is deprecated in Python 3.6.

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Open Files Limit

Changing Limit For Current Session

Most operating systems can change the open-files limit for the current shell session using the ulimit -n command:

ulimit -n 200000

Mac OS X El Capitan

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How to Change Open Files Limit on OS X and macOS

This text is the section about OS X Yosemite (which also works for macOS Sierra) from https://docs.basho.com/riak/kv/2.1.4/using/performance/open-files-limit/#mac-os-x

The last time i visited this link it was dead (403), so I cloned it here from the latest snapshot in Archive.org's Wayback Machine https://web.archive.org/web/20170523131633/https://docs.basho.com/riak/kv/2.1.4/using/performance/open-files-limit/

Mac OS X

To check the current limits on your Mac OS X system, run:

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Python3 Virtualenv Setup

Requirements

• Python 3
• Pip 3

$ brew install python3

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• In Pycharm, Preferences -> Project Interpreter -> Create VirtualEnv -> <your_virtualenv_name_and_location>, and select "inherit global site-packages" option -> OK.
• In command line, install tensorflow in the virtualenv location you created in previous step. For the above case, let's assume the location is ~/tensorflow_pycharm, therefore, run command virtualenv --system-site-packages -p python3 ~/tensorflow_pycharm or python3 -m venv ~/tensorflow_pycharm(changed in version 3.5: the use of venv is now recommended for creating virtual environments).
• Install tensorflow with one of the following approaches:
  • From command line
    • Activate the virtualenv environment by issuing one of the following commands: source ~/tensorflow_pycharm/bin/activate
    • Issue the following command to install TensorFlow and all the packages that TensorFlow requires into the active Virtualenv environment: pip3 install --upgrade tensorflow.
    • In PyCharm, select the configured Project Interpreter at `~/t

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• brew install fish
• add /usr/local/bin/fish to /etc/shells
• chsh -s /usr/local/bin/fish