heroku

To install heroku cli on Ubuntu, run

hostnamectl

To set hostname for your server in CentOS 7, run Set Permanant hostname on AWS EC2 CentOS 7 server Set

CloudLinux

CloudLinux has 2 types of licenses, IP based and key based. You can check the type of license you have

Nginx Redirect

Redirect site from www to non-www How to redirect a domain with html extension in Nginx Nginx Redirect HTTP to

ufw

ufw is firewall in Ubuntu. To enable To list available apps, run To see the status, run To see firewall

PowerDNS

Install PowerDNS Install PowerDNS on Ubuntu 20.04 PowerDNS Command line List all DNS Zones Delete a DNZ Zone To notify

gcloud

Detach a disk from Google Compute Instance Install Google Cloud SDK Google Cloud apt signatures couldn’t be verified Google Cloud

Detach a disk from Google Compute Instance

To remove a disk from Google Compute instance, run Example Here “indiameds” is name of the disk i want to

btc

See crypto-currency

varnish

How to change varnish port in Ubuntu To clear cache, run Get stats See Varnish logs To view logs for

proxy

Squid ShadowSocks Tor Reverse proxy proxychains Web Proxy debugging proxy Install mitmproxy proxy OWASP Zed Attack Proxy Project https://www.telerik.com/fiddler https://portswigger.net/burp

install sysstat on centos

To install sysstat/sar on CentOS, run Enable and start sysstat Allow several minutes to collect data, then you will be