Troubleshooting

Installing and Using Shodan CLI on Linux: A Complete Walkthrough 0
- Linux Basics, Monitoring & Logging, Networking, Security & Hardening, System Administration, Troubleshooting, Web Servers
- June 7, 2025
Shodan is a powerful search engine designed to find internet-connected devices across the globe. It goes beyond conventional search engines by enabling the discovery of specific hardware and software configurations. This guide covers installing and effectively using Shodan’s Command-Line Interface (CLI) on Linux systems including Debian-based (like Ubuntu) and CentOS/RHEL.
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How to Investigate and Resolve SELinux Issues in Linux 0
- Best Practices & Patterns, Linux Basics, Security & Hardening, System Administration, Troubleshooting, Web Servers
- June 7, 2025
SELinux (Security-Enhanced Linux) is a powerful security feature of Red Hat Enterprise Linux and CentOS. It provides a mechanism to enforce mandatory access control policies. However, SELinux can occasionally block legitimate activities if misconfigured. Here’s how you can investigate and resolve SELinux issues effectively.
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How to Repair Linux File-system Issues at Boot 0
- Best Practices & Patterns, Linux Basics, System Administration, Troubleshooting
- June 3, 2025
File-system issues can cause a Linux system, such as Red Hat Enterprise Linux, to fail during boot, leading to system downtime and operational disruption. This guide provides step-by-step instructions on detecting, troubleshooting, and repairing common file-system problems encountered during boot.
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How to Fix ‘bash: TMOUT: readonly variable’ in Linux When Connecting via sudo or SSH 0
- Linux Basics, Security & Hardening, Shell Scripting, System Administration, Troubleshooting
- November 15, 2023
How to Fix ‘bash: TMOUT: readonly variable’ in Linux When Connecting via sudo or SSH
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Linux Boot Management and Troubleshooting 0
- Best Practices & Patterns, Linux Basics, System Administration, Troubleshooting
- February 25, 2023
Efficient management and troubleshooting of the boot process in Red Hat Enterprise Linux ensures that systems remain reliable, accessible, and recoverable. This guide provides clear, practical instructions for managing system boot configurations, identifying common boot issues, and resolving problems effectively. Understanding the Boot Process The Linux boot process typically involves: Identifying Boot Issues Common signs
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