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How to test an Internet connection with bash?

... on mac os this does not work via copy-paste: "-bash: ip: command not found ping: illegal option -- w" – Benedikt S. Vogler Feb 11 '16 at 13:30 ...
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What can be the reasons of connection refused errors?

... There could be many reasons, but the most common are: The port is not open on the destination machine. The port is open on the destination machine, but its backlog of pending connections is full. A firewall between the client and server is blocking access (also...
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Checking a Python module version at runtime

... answered Sep 23 '16 at 3:18 nosnos 14.8k2121 gold badges7878 silver badges102102 bronze badges ...
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What's the difference between .bashrc, .bash_profile, and .environment?

...ifferent algorithm for deciding which startup scripts to run. For the purposes of tasks like setting up environment variables and aliases and printing startup messages (e.g. MOTDs), which startup script is the appropriate place to do these? ...
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How to change the background color of the options menu?

...s yet to provide a satisfactory, supported solution. There are a lot of crossed intentions and misunderstandings floating around posts on this topic, so please read this whole answer before responding. Below I include a more "refined" and well-commented version of the hack from other answers on th...
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pip issue installing almost any library

I have a difficult time using pip to install almost anything. I'm new to coding, so I thought maybe this is something I've been doing wrong and have opted out to easy_install to get most of what I needed done, which has generally worked. However, now I'm trying to download the nltk library, and neit...
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What is the difference between NTFS Junction Points and Symbolic Links?

... Symbolic links have more functionality, while junctions almost seem to be a legacy feature because of their limitations, but the security implications of these limitations are specifically why a junction might be preferred over a symbolic link. Remote targeting makes symbolic links m...
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What file uses .md extension and how should I edit them?

... can we add images or through link in .md file... is it possible? – Raphael Jan 22 '16 at 4:54 ...
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How to disable “Save workspace image?” prompt in R?

... answered Feb 14 '11 at 19:12 Joshua UlrichJoshua Ulrich 157k2929 gold badges308308 silver badges388388 bronze badges ...
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Convert line-endings for whole directory tree (Git)

... dos2unix does that for you. Fairly straight forward process. dos2unix filename Thanks to toolbear, here is a one-liner that recursively replaces line endings and properly handles whitespace, quotes, and shell meta chars. fi...