Linux: How to colorize text in bash scripts
Assume the following scenario, you want to create a script that will colorize strings! simple right? and it is simple but we need first to…
cat linux-how-to-colorize-text-in-bash-scripts.md →$ ls -lh ./posts
// also on this box: ./practice, ./tools and ./games
Linux: How to append text to a file only if text does not exist
Assume the following scenario! you have multiple log lines coming from various sources but there is always the chance that there could be…
cat linux-how-to-append-text-to-a-file-only-if-text-does-not-exist.md →
Linux: track a file and send an email when a particular text shows up
Assume that you have to solve the following problem, you have to constantly watch a log file for a specific event and then send an email…
cat linux-track-a-file-and-send-an-email-when-a-particular-text-shows-up.md →
Python Bloom Filter: Check String Existence in a Sea of Billions Without the Storage Bloat
Assume the following scenario, you are developing a Python application that processes content from text files. The files might contain…
cat python-bloom-filter-check-string-existence-in-a-sea-of-billions-without-the-storage-bloat.md →
How to record your terminal session and export it as animated GIF
In this article i will show you how you can record your terminal output and export it as an animated GIF, why to do that? there are…
cat how-to-record-your-terminal-session-and-export-it-as-animated-gif.md →
How to grep patterns read from a file
grep is an awesome tool that allows you to search for strings, nunbers and patterns of them, its usage can be quite complicated since it…
cat how-to-grep-patterns-read-from-a-file.md →
How to append or prepend text in specific columns with awk
Assume the following scenario, you have a csv file with the following content and you need to do append / prepend text in specific columns…
cat how-to-append-or-prepend-text-in-specific-columns-with-awk.md →
Linux: How to create a ping report with a simple script
Recently i had the following request, there was a need for a solution that would read all entries in /etc/hosts and ping each host and…
cat linux-how-to-create-a-ping-report-with-a-simple-script.md →
How to make smaller Docker images with upx and multistage builds
In a previous article of me i had give an example on how to use upx in order to compress executables but still be runnable, you can find…
cat how-to-make-smaller-docker-images-with-upx-and-multistage-builds.md →
How to make smaller executables with upx
UPX (Ultimate Packer for eXecutables) is a popular open-source executable packer that compresses and reduces the size of executable files…
cat how-to-make-smaller-executables-with-upx.md →