SLES and openSUSE by default set to automatically log in user without authenticating with username and password. While convenient, this is a security risk as anyone with physical access …
Read More
Public and private key pairs are used for publickey authentication method in SSH. When creating the SSH key pair for publickey authentication, you can assign a passphrase to the …
Read More
We usually login to a remote SSH server using password authentication method. Username and password combination is the most common authentication method for SSH and is a suitable method …
Read More
Error warnings for PHP are helpful during development, where you can use them for debugging. Showing the same errors and warnings in a production environment could pose a security …
Read More
You can duplicate a table in MySQL or MariaDB by creating a new table with the same structure as the source table and then copying the data or rows …
Read More
ls and stat are command-line tools in Linux you can use to display information about files and folders, including their sizes. du is another tool you can use to …
Read More
Data deletion operations such as deleting files and folders, formatting partitions, or partitioning disks generally do not delete the actual data; instead, they delete the pointer to the real …
Read More
Files and folders can quickly be deleted using graphical tools such as Nautilus and Dolphin, which come standard with Ubuntu / GNOME and Kubuntu / KDE. If you're using …
Read More
rar is a proprietary format for file archiving and is developed by RARLAB. It distributes WinRAR for Windows and an aptly named rar tool for Linux to create and …
Read More
Optical disks used for operating system or game installer, or for media content such as Blu-ray, DVD, or CD are very prone to scratches. One way to protect the …
Read More
