Hidden Files in Linux? Don’t Be Left in the Dark!Why Do Hidden Files Exist? Hidden files in Linux are files or directories with a dot (.) added before their name. They store system settings and are hidden by default to avoid accidental deletion or modification. IT professionals must know how to work with hidden files to configure and customize… Read More »What Are Hidden Files in Linux? Don’t Be Left in the Dark!
SSH Connection Issues & Improve SSH SecurityTLDR; This blog covers common SSH issues that power-users and advanced users may encounter. It discusses troubleshooting tips for connectivity, authentication, configuration, security, and miscellaneous issues. Some of the most important topics covered include verifying the server is running and reachable, troubleshooting SSH authentication failures, checking SSH key and authorized_keys… Read More »How to Troubleshoot SSH Connection Issues & Improve SSH Security
Common Network Issues with These Linux CommandsTLDR; This article provides a comprehensive guide to troubleshooting common network issues on Linux systems. It covers common issues such as connectivity problems, DNS resolution issues, firewall issues, DHCP issues, slow network speed, and VPN connectivity issues. The article provides techniques for troubleshooting, such as checking network logs and using… Read More »Troubleshoot Common Network Issues with These Linux Commands
Verbose Mode for More Insightful Command Line UseTLDR; Verbose mode in the CLI can be enabled by using an appropriate command-line option (e.g. v for tar). It is useful for debugging, understanding commands, and troubleshooting scripts and automation. Verbose mode is supported by many Unix commands, package managers, and build systems. It is important to understand the… Read More »Master Verbose Mode for More Insightful Command Line Use
LogwatchLinux Logwatch is a log analysis tool that provides a centralized view of all log data generated by various system components. It helps system administrators keep track of important events, troubleshoot issues, and monitor system security. In this article, we will discuss the basics of Logwatch, its usage, and some… Read More »Monitor System Security Easily with Logwatch
Dig CommandThe “dig” command, short for domain information groper, is a powerful tool for querying DNS (Domain Name System) servers. It’s often used by system administrators and network engineers to troubleshoot DNS-related issues and gather information about domain names and IP addresses. In this blog, we’ll dive into the basics of… Read More »Troubleshoot DNS Issues with the Dig Command
Host CommandThe host command is a powerful tool in the Linux system that helps you manage your DNS (Domain Name System) records. The host command allows you to perform various tasks related to DNS, including resolving hostnames to IP addresses, performing reverse lookups, and retrieving information about a specific DNS server.… Read More »Troubleshoot DNS with the Host Command
NSLookupNSLookup is a powerful tool for network administrators and IT professionals that helps in troubleshooting DNS-related issues. It is a command-line utility that allows you to query the DNS records of a domain or IP address and receive information about its associated domain name or IP address. In this blog,… Read More »Troubleshoot DNS Issues with NSLookup
TcpdumpTcpdump is a packet analyzer that runs on the command line. It captures network packets and displays the information contained in them in a human-readable format. It can capture packets from a specific interface, a host, or a network, and can filter the packets based on various criteria, such as… Read More »Capture, Monitor, Analyze & Troubleshoot Network Traffic with Tcpdump
Monitor Server Performance with a Bash ScriptAs an admin, you may want to keep an eye on your system’s performance to ensure that it runs smoothly and efficiently. One way to do this is by creating a Bash script that logs key performance metrics. In this blog post, we’ll cover how to create such a script,… Read More »Actively Monitor Server Performance with a Bash Script