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 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…
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.…
Creating a new MySQL user
MySQL allow us to restrict users to certain scopes or domains. For example, by default root user can only be used if you attempt to connect to the server using…
Checking disk size and available space in Ubuntu
Here's a compact list of possible commands. Pick the one you like the most. a) fdisk -l // Pick the one that works best for you a) $ fdisk -l…