How Do You Copy Files into a Docker Container from the Server’s Command Line?

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Docker is itself a dependency resolution tool.  It is a container that allows a DevOps engineer to prepare one-time an OS environment with nuanced dependencies and configurations for other packages to be installed.

Leveraging the efficiency of a configuration management tool (such as Ansible, CFEngine, Chef, Puppet, and SaltStack) can empower DevOps engineering.  It can also necessitate using duplicative deployments in different environments (development, quality assurance, staging, and production).  Having a backup plan for disaster recovery is also important. 

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Ansible Managing Windows Servers

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While as of right now, there is not a great way to install Ansible on Windows servers (because you have to install cygwin).  Ansible running on Linux can readily configure Windows servers and push files down to them.  There are some things to look out for when setting this up.  It is not overly documented on Ansible’s website.  Some documentation (on various websites) tells DevOps engineers (or the professional using Ansible) to use a windows.yml file in a group_vars directory. 

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Moving a Windows .txt file to a Linux Server

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Problem scenario:  When you move a Windows .txt file to a Linux server, new characters can be introduced.  For example, the content of the file can have a “^M” (with no quotes) at the end of every line.  Sometimes tr, sed, and awk won’t work to remove this new jibberish (extraneous characters).  Moreover, sometimes the substitute command in vi will fail to do anything about these extraneous characters (^M).  How do you eliminate these extra characters at the end of every line? 

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Python Documentation Issue

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Python is a great language. 

On 11/10/15 we found an error on this Python documentation site.  Here is what we saw for the endswith function documentation:

The Syntax for the “endswith” function, on the face of the documentation, involves “startswith”.  We updated the site by clicking the “Edit on GitHub” link.  We corrected it on 11/10/15.  Hopefully someone will approve this change and the canonical syntax in the documentation will be corrected.

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Definition of a Java Thread

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Java source code is compiled into bytecode.  Bytecode, when run, is executed by the processor.  Sequences of bytecode go through processors, and on occasion these sequences must be analyzed for developing new Java software.  Java Enterprise Edition (the programming language of choice for many businesses) is owned by Oracle.  However, Oracle is not always the best creator or custodian of documentation for Java.  Here is an example (as of November 2015) taken from Oracle’s 

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