Month: July 2017

Replacing multiple spaces with one tab in BSD (OS X) sed

Posted on by alexpreynolds

Press Ctrl-V and the Tab character where you see [TAB]:

$ sed 's/[[:space:]]\{1,\}/[TAB]/g' in.mtx > out.mtx

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Installing pygraphviz in OS X 10.12

Posted on by alexpreynolds

This assumes Homebrew is installed and that it installs Graphviz 2.40.1:

$ brew install graphviz
$ git clone https://github.com/pygraphviz/pygraphviz.git
$ cd pygraphviz
$ sudo python setup.py install --user --include-path=/usr/local/Cellar/graphviz/2.40.1/include --library-path=/usr/local/Cellar/graphviz/2.40.1/lib

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