The du (disk usage) command estimates how much disk space files and directories occupy. It’s the go-to tool when you need to find what’s consuming space—whether that’s a single file, a project folder, or an entire filesystem. This guide covers the syntax,…
RHCSA Practice Exam A Here are some tips to ensure your exam starts with a clean environment: After applying these tips, you’re ready to get started. Good luck! Answers: Reset the root password on boot If you are…
Cómo verificar la dirección IP en Linux En el entorno de Linux, es esencial poder verificar la dirección IP de su sistema. La dirección IP es un identificador único asignado a cada dispositivo conectado a una red, lo que le…
The RHCSA (Red Hat Certified System Administrator) exam is a performance-based certification exam offered by Red Hat. It is designed to validate the skills and knowledge required to effectively administer Red Hat Enterprise Linux systems in various enterprise environments. The…
This article is part of the following series. Understanding MAC address in Linux In Linux, a MAC address (Media Access Control address) is a unique identifier assigned to a network interface. It is a hardware address that is associated…
There are a few different ways to search files by size in Linux. One way is to use the find command. The find command is a powerful tool that can be used to search for files based on a variety…
The error “could not load server certificate file ‘server.crt’: No such file or directory” in PostgreSQL indicates that the server is unable to find the server.crt file, which is required for SSL connections. If you don’t need that, set “ssl…
Enabling SSL in PostgreSQL is a straightforward process that only requires three simple steps: Obtain server certificate and key files for Postgres On PostgreSQL server, we need 3 certificates in data directory for SSL configuration. They are: In…
Preserve file permissions using -p option in cp command To preserve the file permissions when copying files or directories using the cp command, you can use the -p or –preserve option. The -p option will preserve the following attributes of…
The error message “cp: Permission denied” typically occurs when the user doesn’t have permission to access the source file or the destination directory. Here are the errors we usually meet with “cp Permission denied” error in Linux: Error Description cp:…
