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In Bash scripting, it's often necessary to check if a string contains a specific substring. This can be useful for validating user input, processing text data, or executing certain actions based on the presence or absence of a certain pattern. The process of checking if a string contains a substring...
Dimitrije Stamenic
When creating a website or web application, especially if they feature a lot of templated content (such as a grid or list of items belonging to a category) - it's generally a good idea to divide it into pages to reduce the number of items that appear on the screen...
Guest Contributor
It is important to check for the existence of directories and files in Bash scripts for several reasons. Firstly, it allows the script to handle situations where the expected directories or files do not exist. This can prevent errors and unexpected behavior in the script - if a script expects...
In bash, the [ and [[ operators are used for comparison and testing. The [ operator is an alias for the test command, which is used to check the properties of files or to compare strings or integers. The [[ operator is a more advanced version of the test command. It allows you to...
In Bash, parameter expansion is a feature that allows you to manipulate the value of a variable or to extract part of its value using a special syntax. It is often used to modify the value of a variable or to extract information from it. Parameter expansion uses a syntax...
There are many reasons why you might want to extract the filename and extension of a file in Bash: To manipulate the file name or extension - You may want to extract the filename or extension in order to modify it, such as adding a prefix or suffix to the...
There are several reasons why you might want to check if a column is NULL in MySQL: To filter query results - You might want to exclude rows with NULL values from your query results. For example, you might want to get a list of all users who have provided...
In Bash, a new line refers to the end of a line of text and the beginning of a new one. When a command is executed in Bash, the output is often displayed on the terminal with each line of text ending in a new line. The new line character...
Writing unit tests is something beginners and seasoned engineers alike typically put off for later phases of development, yet - they're key to stable and robust software development. The basic premise of test-driven development (TDD) is writing your tests even before you start coding. That's a great goal to strive...
Scott Robinson
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