File access permissions and security are at the heart of *nix-based operating systems. File objects can belong to users and/or groups, and at times they need to be shared with various combinations of those two. There are multiple ways in *nix systems to reinforce secure sharing of these
Bash utilities make so many tasks simple, but not all tasks have a straightforward command or operator. A very common and usual task in many scripting scenarios is concatenating string variables.
Bash doesn't have a built-in function or command-line utility to concatenate two strings together. However, there are many
It's typical for CLI apps to return text in the same color of the terminal. There are always cases when we want to highlight output to the user, for example, a warning or error message. In those cases, a dash of color could make a difference.
This article shows
Splitting strings and lists are common programming activities in Python and other languages. Sometimes we have to split our data in peculiar ways, but more commonly - into even chunks.
The language does not have a built-in function to do this and in this tutorial, we'll take a look
The print() function in Python appends a newline to the output when displayed on the tty (teletypewriter A.K.A the terminal). When you don't want your message displayed with newlines or with spaces, how can you change the behavior of print()?
This can easily be achieved by altering
In this article, we'll take a look at how to remove keys from Python dictionaries. This can be done with the pop() function, the del keyword, and with dict comprehensions.
The pop(key, d) function removes a key from a dictionary and
Working with variables in data analysis always drives the question: How are the variables dependent, linked, and varying against each other? Covariance and Correlation measures aid in establishing this.
Covariance brings about the variation across variables. We use covariance to measure how much two variables change with each other.
In this article, we'll take a look at how to find the size of a dictionary in Python.
Dictionary size can mean its length, or space it occupies in memory. To find the number of elements stored in a dictionary we can use the len() function.
To find the
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