A report can be long when you only need to check its newest records. The Linux tail command prints the end of a file, with options to start at a chosen line or byte count. I’ll show how to select the part of a file to read and how to follow new log entries. TL;DR:
Linux Tail Command: View and Follow Files Read More »
A local application needs a place to store its data. MySQL Server is a database service that stores structured data and answers SQL requests, and the mysql client connects to it. I’ll show you how to install the distribution package with APT and check whether the service is active. TL;DR: Install MySQL with APT On
Installing MySQL on Debian/Ubuntu Read More »
A command-line task may call for checking a web response or sending data to a service. The curl command transfers data to or from URLs. This article walks through inspecting response headers and sending a small JSON request with curl. TL;DR: curl command in Linux curl handles transfers from a URL. These options determine whether
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Copying a file from a terminal means choosing a source path and a destination, which can have a different name. The cp command copies files and, with a recursive option, copies directories and their contents. In this piece, I’ll walk through copying files and directories with cp, then explain how to choose an overwrite option.
How to Use the cp Command in Linux Read More »
Applications that keep information between runs need somewhere to store it. MongoDB Community Edition is a database server that stores information as documents. I’ll show you how to install MongoDB Community Edition from the repository that matches your Ubuntu release and check that its local server is running. TL;DR Install MongoDB Community 8.0 on Ubuntu
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Project work often means keeping track of changes to files as they develop. Git records those changes in a repository, and Ubuntu’s APT package manager installs Git from configured software sources. I’ll walk you through installing Git on Ubuntu and preparing a project repository. TL;DR Install Git from Ubuntu’s APT repositories, check that the command
How to Install Git on Ubuntu Read More »
Checking the accounts on an Ubuntu machine means choosing whether to look at local records or accounts the system can resolve. The getent passwd command looks up records through the machine’s configured account sources, while the /etc/passwd file stores local records. I’ll show you how to list local names and system-resolved accounts, then use a
How to List All Users in Ubuntu Read More »
Looking up a command while working in a shell can interrupt the task you are trying to finish. A Linux command cheat sheet groups common commands by task and gives you a starting point for using them. I’ll show how to use common Linux commands and explain how to check their options before running them.
Linux Commands Cheat Sheet: Common Tasks Read More »
An Ubuntu package install or update can be blocked while another package operation is running. The dpkg frontend lock prevents a second package operation from starting until the first one releases it. I’ll show how to check which process holds the lock and decide whether to wait or stop a confirmed stuck process. I’ll also
How to Fix Ubuntu Dpkg Frontend Lock Errors Read More »
Copying a file into place can also mean choosing its destination permissions or creating directories along the path. The GNU install utility prepares files and directories from the command line, including copying a file and creating missing parent directories. I’ll show how to set permissions on a copied file and create the directories it needs.
Install Command in Linux: Examples Read More »