Verify if server supports a particular TLS version
Recently disabled supported for TLS 1.1 on my server. To test if everything was working fine, I used curl. # Should fail curl -I -v --tlsv1.1 --tls-max 1.1 https://myserver.com/v1/ #…
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CLI Zip Cheatsheet
# Instead use the -r option ``` $ zip -r src.zip ./src/ § zip src.zip ./src/**/* <-- Dont do this - Globs won't work as expected ``` # List zip…
Protect your server against attacks by adopting SSH Key as your
In your local machine (the one that will be establishing the connection to the server) do: ssh-keygen -b 4096 Generating public/private rsa key pair. Enter file in which to save…
MacOS: When suddenly, after a system crash, mysql server instance no longer starts. What can I do?
Recently, after a system crash and consequent system reboot, mysql stopped working. I tried to manually start the server but had no luck on this. sudo /usr/local/mysql/support-files/mysql.server start Tried to…
CWD (current working directory) is incorrect when a bash scripts is double clicked. How can we fix this?
When we get started with bash scripting, one of the most frequent problems we come across is the incorrect CWD (current working directory). This is problematic when we expect to…
How to copy files from one folder to another using unix command line (the rsync way)? (Basic usage)
Copying files around is probably one of the most common reasons why we create bash files. We could be using unix cp but there are more powerful ways available. The…
How to copy files and directories between two unix systems using rsync
Wikipedia describes rsync as follow: "rsync" is a utility for efficiently transferring and synchronizing files between a computer and an external hard drive and across networked computers by comparing the…
How to allow MySQL to receive remote connections?
This is a very common question and I decided to make a short answer for my self and everyone else struggling with the same issue. No matter the environment you…
How to install and configure PM2 on ubuntu (basics)
PM2 is a process manager for node.js apps. PM2 can be easily installed using npm package manager. Here's how: $ npm install pm2 -g Once pm2 is installed there's only…
Installing MySQL 8 on Ubuntu Server
MySQL is an open-source relational database management system. Its name is a combination of "My", the name of co-founder Michael Widenius's daughter, and "SQL", the abbreviation for Structured Query Language.…