for_each in Terraform is used to create multiple similar resources based on a set or a map. It helps to apply the same configuration to a group of resources efficiently. Syntax: Using for_each with a Set of Strings: For a set of strings, for_each can create a resource for each string. Example: Using for_each with …
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Practical Linux System Administration by Kenneth C. Hess is an outstanding resource for both aspiring and experienced Linux system administrators. It offers a comprehensive and well-organized overview of managing and maintaining Linux systems. The book’s clarity and structure make it accessible even to those with limited Linux experience. Strengths: Weaknesses: Overall, Practical Linux System Administration …
The “connection closed by remote host” message usually indicates that the remote host (e.g., a server) has closed the connection. This can happen for a variety of reasons, such as network issue, the remote host crashing, the connection timing out, or the remote host intentionally closing the connection. If you are trying to establish a …
In Linux, there are two ways to switch to the root user. The first way is to use the su command, and the second way is to use the sudo command. In this blog post, we will discuss both methods in detail. We will also provide step-by-step instructions on how to switch to the root …
In Linux, the home directory is where user data is stored. This can be useful for finding files that belong to a particular user, or for troubleshooting purposes. There are three main ways to find a user’s home directory in Linux: by using the environment variable, the ~, or from /etc/passwd file. In this blog …
If your Linux system is running slowly, the first place to look is usually the disks. Often, a slow disk can cause a significant slowdown in overall system performance. In this blog post, we will discuss four ways to troubleshoot slow disks in Linux. We will also provide some tips on how to improve disk …
In Linux, there are three ways to list mount points: using the df command, using the mount command, and using the cat /proc/mounts command. In this blog post, we will discuss each of these commands in detail. We will also provide examples of how to use each command. By the end of this blog post, …
There are many different ways to list all the users in Linux. In this blog post, we will discuss two of the most common methods. The first method is to use the “cat /etc/passwd” command. This command prints a list of all the users who are stored in the “/etc/passwd” file. The second method is …
There are a few ways to append text to the end of a file in Linux. In this blog post, we will discuss two of them: using the “>>” operator, and using the “tee” command. Let’s get started! Append text to the end of a file with >> operator in Linux The “>>” operator is …
In computing, a page is a unit of memory. The size of a page depends on the operating system and hardware. In Linux, a page is usually 4096 bytes (4 KB). However, in some cases pages can be up to 16384 bytes (16 KB) in size. This larger size is called a “hugepage.” In this …