Linux

This short tutorial will demonstrate how to get the path to the currently running Bash/Shell script in Linux, and provide a code example. Getting the path to the current script is useful if you have other files in the same directory as the script that you want to access when calling the script from elsewhere. For example, you may have a script that plays music located with your music files, and have a second script on your Desktop that calls it. The first script will … Read more

This short post will explain how to use the bash wait command to wait until a process has finished, and how if differs to the sleep command. What does the Bash wait Command Do? The wait command is a simple program that waits for a process to change state – this means waiting for it to exit. How to Use the Bash wait Command The wait command expects a list of process ids that it should wait to complete, for example: Above, the process ids 111 and 222 are supplied to wait. wait will only complete its own execution once the processes supplied to … Read more

This short article will demonstrate how to check whether a string variable is empty in Bash and other Shell scripts in Linux, with examples. Bash Operators Bash operators are the symbols and expressions that perform comparisons, assignments, and arithmetic. The -z Bash Operator The -z operator returns true if a string variable is null or empty. How the use the -z Bash Operator After declaring a string variable, use the -z operator in an if statement to check whether a string is empty or not: For more Shell scripting tips, check out or Bash/Shell scripting articles!

This article will show how to grow a partition on your Linux partition to fill the entire disk using growpart. This is useful if you have resized a virtual machine disk, or moved to a larger disk on your desktop or laptop Linux system. Resizing Linux Virtual Machine Disks Most commonly, you’ll be looking to grow your Linux partition to fill the entire disk on a virtual machine after resizing it. Cloud hosts like Amazon AWS and Google Cloud, and virtual machine solutions like VirtualBox and Hyper-V allow … Read more