bash tricks: how to copy ssh key to all /etc/host entries with an one-liner
Scenario: you have just landed to a company which does not have a an automation tool to copy your key to all hosts, to make things worse…
Konstantinos Patronas
grep: compare two unsorted files and get unique lines
Scenario: every day we run a report that produce a csv file with some IDs and we want to check the differences that those two files might…
Dockerize a Python application, work with containers.
In this scenario we have a simple flask application that we want to dockerize, our application consists of a single file named server.py.
Python: List Comprehension tricks
What is List Comprehension?
Linux: replace a character with another after N occurances of a character wit
We have the following scenario, we have a file with the following contents
Linux parallel: how to execute a command in parallel and get arguments from a file
Parallel is a command that can help you do your work faster because it can execute your commands in parallel.
Use rsync to copy only missing files and files with updated content from a remote server.
Scenario: We need to copy from a remote server to local files we dont have and files that their content is updated, also we dont have ssh…
Linux: smarter file-system navigation on the command line
One of the most used commands on the terminal is the “cd” command because working from the command line most likely means that you need to…
Linux: How to mass rename/edit filenames
The problem:
Python: Case In-sensitive argparse “choices”
There are cases that we need to limit the options that a user will provide as command line arguments, to do this the easy way in python we…