Java : Complete Dig up

Containers and virtual machines have similar resource isolation and allocation benefits -- but a different architectural approach allows containers to be more portable and efficient. VIRTUAL MACHINES: Virtual machines include the application, the necessary binaries and libraries, and an entire guest operating system -- all of which can amount to tens of GBs. CONTAINERS: Containers include the application and all of its dependencies --but share the kernel with other containers, running as isolated processes in user space on the host operating system. Docker containers are not tied to any specific infrastructure: they run on any computer, on any infrastructure, and in any cloud.

Best Practices   Shell Scripting  : Most programming languages have a set of "best practices" that should be followed when writing code in that language. However, I have not been able to find a comprehensive one for shell scripting so have decided to write my own based on my experience writing shell scripts over the years. A note on portability : Since I mainly write shell scripts to run on systems which have Bash 4.2 installed, I don't need to worry about portability much, but you might need to! The list below is written with Bash 4.2 (and other modern shells) in mind. If you are writing a portable script, some points will not apply. Needless to say, you should perform sufficient testing after making any changes based on this list :-) Here is my list of best practices for shell scripting (in no particular order): Use functions Document your functions Use  shift  to read function arguments Declare your variables Quote all parameter expansions...