grep is a powerful tool on Linux and UNIX-based operating systems. It searches for patterns in files and is flexible enough to search through multiple files. You may select a set of files manually or use a glob pattern to find the files to grep on. This tutorial shows you …

Bugs in a production environment are stressful. The search for context information typically starts by searching the log files. It can be tedious to find the context you’re looking for in (rotated) log files or you’re pushing a large amount of data to your logs. A nice thing …

grep is a powerful tool for searching for a pattern in files. You can search in a single file, all directory files, or recursively through all files in a directory. A use case to search through all files in a directory is finding information in application log files. You may …

grep allows you to search for a pattern in a file’s content. This tool searches even through large files, like application logs. You may also search recursively for a pattern in files of a directory and related subdirectories. This tutorial shows you how to run a recursive search on …

Searching for a pattern in files using grep is case-sensitive by default. Case-sensitive means that grep looks for an exact match of your pattern in the related file. This may not surface all search value matches because of different writing styles for a given text. This tutorial shows you how …

The nano text editor is included in Debian-based operating systems. Because Ubuntu is based on Debian you’ll find nano pre-installed as well. The nano editor comes in handy when working in environments where you don’t have a user interface. For example, in server environments or using remote connections …

Occasionally you need to shut down or reboot your Linux servers. The Linux operating system comes with the built-in shutdown command. This command allows you to power off or reboot a computer. This tutorial shows you how to shut down or reboot a Linux machine. {{outline}} Shutdown Your Ubuntu/Debian …

In Linux, you can display a list of files and directories using the ls command. By default, ls prints the contents of a directory (files and folders) alphabetically in a column-like layout: $ ls CHANGELOG.md README.md lerna-debug.log node_modules package.json test LICENSE jest.config.js lerna.json …