How to Use rsync for Efficient File Synchronisation on RHEL 7 The rsync utility is the de facto standard for file synchronisation on Linux. Unlike a simple cp or scp, rsync transfers only the differences between source and destination, making it extraordinarily efficient for large datasets and incremental backups. On Red Hat Enterprise Linux 7, […]
Introduction This guide explains how to Set Up Suricata IDS/IPS on Debian 10 on Debian 10 Buster. Debian Buster uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 10 install with the […]
How to Configure /etc/hosts, /etc/resolv.conf and DNS Resolution on RHEL 7 DNS resolution is one of the first things you troubleshoot when a server cannot reach other hosts by name. On Red Hat Enterprise Linux 7, name resolution is controlled by a layered system involving /etc/hosts, /etc/resolv.conf, /etc/nsswitch.conf, and NetworkManager. Understanding how these files interact […]
Introduction How to Configure rkhunter Rootkit Scanner on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 10. […]
How to Manage Users and Groups with useradd, groupadd and passwd on RHEL 7 User and group management is one of the most fundamental administrative tasks on any Linux system. On Red Hat Enterprise Linux 7, the tools for creating, modifying and maintaining user accounts are robust, flexible and follow the standard POSIX conventions. Whether […]
Introduction Deploying enable clamav antivirus on debian 10 on a Debian 10 Buster machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Before you begin, […]
How to Configure Log Rotation with logrotate on RHEL 7 Log files are essential for diagnosing system problems, tracking security events, and auditing application behavior. However, without proper management, log files grow without bound and can fill your disk, causing service outages and making historical logs difficult to navigate. logrotate is the standard log rotation […]
Introduction Deploying set up a certificate authority with openssl on debian 10 on a Debian 10 Buster machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. […]
Introduction How to Configure GPG Key Management on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 10. […]
How to Use tmux for Terminal Multiplexing on RHEL 7 Every Linux administrator has experienced the frustration of losing a long-running process because an SSH connection dropped. tmux (terminal multiplexer) solves this problem by running your terminal sessions inside a persistent server process that survives disconnections. Beyond persistence, tmux allows you to split a single […]
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