How to add swap space to Linux
One of the most common operations is to add swap space to a Linux machine, there are two ways, the first one is to create a swap partition……
$ whoami — Konstantinos Patronas
Linux: How to expand an ext4 filesystem online
In the older times to expand a file system you would need to unmount the filesystem and apply some commands typically using the parted……
Use curl to write dinfluxDB
In this article i will show you how to use curl a well known and trusted tool to write data to influxdb, probably now you are wondering……
Awk: how to change timestamp format of a column
Recently i had a task to convert a csv file with timestamps in one column from a format to another! i didn't want to use Python for this……
Linux: How to delete files and directories older than a number of days
One very common task is to delete files and directories that are older than a number of days, this is what usually we do with backups and……
How to send email through sendgrid API using curl
Do you use sendgrid to send emails? if yes this article will help you to use curl to send emails through shell, lets see how!…
Docker: syslog logging per container
In this article i will show you how to configure syslog logging per container, having logs organized in a <container-name>/<logfile>……
Docker: How to configure and use a local docker registry
In this article I show you how to create and use your own local docker registry, the reasons to create your own registry are keep images……
x509 certificate signed by unknown authority error, how to resolve it.
Recently i had a problem with a Docker installation, where i could not “pull” any image from a Docker registry, the error message when i……
Linux: Create a Samba share
Samba Server Setup…