Learn to Code. Shape Your Future
In Bash scripts is very common to check if a file or a directory exist. How do you check if a file or a directory exists using Bash? In Linux everything is a file. You can use the test command followed by the operator -f to test if a file exists and if it’s a … Read more
Have you ever heard about the concept of symbolic link in Linux? You might have heard the word symlink instead…they are the same thing. What is a symbolic link? A symbolic link in Linux (or Unix-like operating systems) is a shortcut to a file or directory. You can use it to simplify the way you … Read more
Using the cURL command in a Bash script can be useful, but why? We live in the era of APIs… …you ask for data and you get it back… But how can you know if your API request is successful? HTTP response codes are able to tell you that, for example, a successful request is … Read more
Have you ever tried to get the directory of your Bash script programmatically? It’s a common thing people ask and it can be done in different ways. The first thing to look at to solve this problem is the $0 variable, used in Bash to store the first element of the command executed. Create a … Read more
Why would you exit from a Bash script? Let’s say you are writing a script…there’s one thing that is almost certain… At some point, your script is likely to break because of unexpected conditions you might have not considered. So, what can you do about it? How can you exit a Bash script in case … Read more
Knowing how to count the lines of a file or from the output of a command is a must in Linux. How to count the lines in a file with Linux? Linux provides the wc command that allows to count lines, words and bytes in a file or from the standard input. It can be … Read more
I want to loop through the lines of a file with a Bash script and one of the ways to do it is using a for loop. What is a for loop? A for loop is one of the most common programming constructs and it’s used to execute a given block of code given a … Read more
In this article, we will create a simple Bash script and show how to pass arguments to it using the Linux command line. How can you pass arguments to a Bash script? Arguments passed to a Bash script follow the name of the script in the command line and they are separated from each other … Read more
You are using your Linux machine, you remember that somewhere you have some files you need…but how can you find your files using the Linux terminal? The Linux find command is the most common command used to find files using the Linux command line. It allows to find files anywhere on the filesystem and it … Read more
I have been asked to write an article that explains the tar command in Linux using simple terms. And I totally understand why… The tar command is definitely not one of the easiest Linux commands to learn and all these flags can be quite confusing! The Linux tar command is used to create .tar, .tar.gz, … Read more
