Posts
Page 53 of 66
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bash `set -e` Doesn't Work Like You Think
set -e looks bulletproof, but it slips right through pipes, command substitution, and conditionals. The bash gotchas that bite at 2 AM, and how to fix them.
6 min read -
Proxy Chains and Anonymization: What Actually Works and What's Just Theater
Proxychains-ng, Tor, and VPN+Tor combos tested honestly: which setups actually anonymize traffic and which are security theater you should stop trusting.
· Updated:9 min read -
Bash Arithmetic Without bc
Bash has built-in arithmetic. You don't need bc for 90% of math. Here's how to do it right.
5 min read -
n8n vs Node-RED: Automate Everything Without Learning to Code (Much)
You're paying $20/month to Zapier for two HTTP requests. n8n and Node-RED replace it for free: Docker setup, real workflows, and a head-to-head comparison.
· Updated:8 min read -
Linux Audit Log: What's Really Happening on Your Server
auditd logs every system call, file access, and command run on your Linux server. Learn ausearch, aureport, and how to write audit rules that catch it.
6 min read -
Ventoy: Boot Any OS, Any Time
Ventoy turns any USB drive into a multi-boot drive, drop ISOs on it and boot any OS without re-flashing the drive each time.
14 min read -
Bash Strict Mode: set -euo pipefail Explained
set -euo pipefail makes your bash scripts fail fast instead of silently. Here's what each flag does and why they matter.
5 min read -
The sudoers Mistake Everyone Makes Once
Never edit /etc/sudoers directly. One syntax error locks everyone out. Use visudo, understand NOPASSWD risks.
5 min read -
awk for Log Parsing: 5 Patterns You'll Actually Use
awk is perfect for parsing logs. 5 patterns for filtering, summing, counting, splitting fields, and reformatting, no Perl or Python required.
· Updated:6 min read -
Why Your TLS Certificate Isn't Trusted
Incomplete cert chains, wrong order, self-signed certs. How to diagnose trust failures with openssl s_client.
5 min read -
jq One-Liners Every Sysadmin Needs
jq is JSON on the command line. Here are 5 one-liners that actually solve real problems: filtering, extracting, transforming, combining, and debugging.
4 min read -
Certificate Expiry: Monitor Before the 3 AM Call
Certs expire silently. Check expiry with openssl, automate renewal checks with cron, get alerts before disaster.
5 min read
