63 articles found
What is SSH? SSH (Secure Shell) is a cryptographic network protocol that provides a secure, encrypted channel for remote access to computers and servers over an unsecured network. When you connect to a remote server, SSH encrypts everything — your co......
Bash is the default shell on Linux and macOS, and the most important scripting language for system administration. Learn what Bash is, why it matters, and how to write your first script....
Linux powers 96% of the world's servers, all Android phones, and most of the cloud. Learn what Linux is, why it matters, how it works, and how to get started with this comprehensive beginner's guide....
Level up your SSH skills with 15 practical tips: multiplexing, tunnels, jump hosts, agent forwarding, config file tricks, and security hardening....
Set up automated, encrypted Linux backups with rsync and Borg Backup. Complete guide with cron schedules, retention policies, and monitoring scripts....
Learn how to create a bulletproof Linux disaster recovery plan. From backup verification to automated failover — protect your servers from catastrophic data loss....
We published two editions of our Bash Book — the original classic (452 pages) and the fully revised 2nd Edition (352 pages) for 2026. This in-depth comparison breaks down what changed, what is new, and which edition suits your skill level and goals....
Perl may not be trending on social media, but it quietly powers critical infrastructure at thousands of companies. This honest assessment examines where Perl excels in 2026, why it refuses to die, and whether it deserves a place in your skill set — with practical examples and career advice....
PowerShell is no longer just a Windows tool — it runs on Linux, macOS, and in the cloud. This comprehensive guide covers modern PowerShell 7 scripting, Azure automation, cross-platform workflows, and why PowerShell skills are essential for every IT professional in 2026....