Tutorials Index Page 17

beginner

How to XZ a directory with TAR for maximum compression?

XZ is a lossless data compression algorithm that has the better compression ratio, learn how to use it on Linux here.

beginner

How to undo last commit not pushed?

Here we explain how to undo or fix wrong commited files to Git that were not pushed to external repository.

beginner

How to check that a file or directory exists with Python?

For checking if a file exists with Python 3 you can use the Path python3 Path class from pathlib module. The Path class has the method exists and is\_file. We also give some examples with Python 2 using the os.path.isfile function.

intermediate

Postgres query performance analysis and optimization

Learn how to analyze and optimize postgres query performance with an example.

beginner

How to add or resize swap partition on Ubuntu 16.04

Learn how to add more swap space to Ubuntu 16.04. Also learn how to resize a swap partition.

intermediate

Scanning vulnerabilities on Ubuntu 16.04

Learn how to use the vuls scanner to scan for vulnerabilities in ubuntu 16.04 and other Linux systems.

beginner

How to install GO language

Easy steps to install GO lenguage in a Linux system.

intermediate

Postgres Configuration Tunning

beginner

Setup ssh keys for authentication

See all the details on how to setup and use ssh keys for authentication.

beginner

How to adjust NVIDIA GPU power usage on linux

If you are using a headless server with NVIDIA GPUs for scientific computing or crypto mining it's probably that you will notice high temperature close to about 80+ C. Also you will notice that fan speed is not at 100% when temperature is high. In this tutorial we explain how to manage to lower the temperature using nvidia commands.