How To Set or Change Timezone on CentOS 8
This article describes how to set or change the timezone on CentOS 8 systems. Using the correct timezone is essential for many systems related tasks and processes.
Regular Expressions in Grep (Regex)
grep is one of the most useful and powerful commands in Linux for file processing. In this article, we're going to explore the basics of how to use regular expressions in the GNU version of grep.
What Does chmod 777 Mean
Setting 777 permissions to a file or directory means that it will be readable, writable and executable by all users and may pose a huge security risk. This article explains the basic Linux permissions model and what the numbers corresponding to the permissions mean.
How to Extract (Unzip) tar.xz File
Xz is a popular algorithm for compressing files based on the LZMA algorithm. This article explains how to extract (or unzip) .tar.xz or .txz archives using the tar command.