An indispensable sysadmin cheatsheet covering VMware ESXi CLI license management, automated IPsec VPN provisioning, 7zip multi-volume archive splitting, and awk domain scraping.
A practical sysadmin guide to configuring Dnsmasq as a lightweight DHCP server, managing network interfaces via nmcli, and establishing firewalld port forwarding.
An expert sysadmin guide to parsing Cisco Email Security Appliance (ESA) syslogs using awk and grep to identify, track, and report double bounced spam messages.
An expert sysadmin guide to configuring AWS CloudWatch monitoring scripts on Ubuntu/Debian EC2 instances to track memory utilization, swap usage, and disk space metrics.
An enterprise guide to deploying a 4-node GlusterFS distributed storage cluster, configuring rich firewall rules, mounting via native FUSE, applying performance tuning, and troubleshooting metrics.
An expert sysadmin guide to configuring Squid Proxy delay pools and Access Control Lists (ACLs) to throttle bandwidth and prevent network interface saturation.