Linux: How to ping multiple hosts directly or over ssh proxy
Ping multiple hosts in parallel, directly or over SSH proxy.
cat linux-how-to-ping-multiple-hosts-directly-or-over-ssh-proxy.md →$ ls -lh ./posts
// also on this box: ./practice, ./tools and ./games
Python: How to insert characters in specific positions of a string.
A simple guide on how to insert characters in specific positions of a string in Python.
cat python-how-to-insert-characters-in-specific-positions-of-a-string.md →
Grafana: How to export graphs as images and email them
Grafana is one of the most used dashboarding and alerting tools, it has many features but recently i noticed that lacked the capability to…
cat grafana-how-to-export-graphs-as-images-and-email-them.md →
Linux: recover deleted text files using grep
Recently i did a mistake, i accidentally deleted a script on my file system that had tool about a week to complete it, i started exploring…
cat linux-recover-deleted-text-files-using-grep.md →
Linux: sum a column of numbers
A often problem i have to deal is how to sum columns of numeric data piped from other commands or files, lets see how we can deal with…
cat linux-sum-a-column-of-numbers.md →
Ubuntu: How to use netplan to configure static IP
Netplan enables easily configuring networking on a system via YAML files. Netplan processes the YAML and generates the required…
cat ubuntu-how-to-use-netplan-to-configure-static-ip.md →
Why you might wanna have a look on this as well, it uses pandas and multiprocessing to create a…
https://python.plainenglish.io/pandas-and-multiprocessing-how-to-create-dataframes-in-a-parallel-way-72f9b18ea72f
cat why-you-might-wanna-have-a-look-on-this-as-well-it-uses-pandas-and-multiprocessing-to-create-a.md →Bash: execute a script only when no other instance of the script is running.
Possible issues having two instances of a cronjob at the same time
cat bash-execute-a-script-only-when-no-other-instance-of-the-script-is-running.md →
What is Hope?
Usually, I don’t write for non I.T stuff, mainly because I don’t think that I am a subject matter expert to something else. Still, I…
cat what-is-hope.md →
Linux: how to run a command as another user
There are two ways to execute a command as another user, using sudo or using su , despite they do the same thing the way how they work is…
cat linux-how-to-run-a-command-as-another-user.md →