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AWK and Regular Expressions to Filter Text or String in Files
AWK is an interpreted programming language. It is very powerful and specially designed for text processing. AWK – Basic Examples This chapter describes several useful AWK commands and their appropriate examples. Consider a text file marks.txt to be processed with the following content − 1) Amit Physics 80 2) Rahul Maths 90 3) Shyam Biology […]
kubectl Quick Reference
Kubectl autocomplete BASH source <(kubectl completion bash) # set up autocomplete in bash into the current shell, bash-completion package should be installed first. echo “source <(kubectl completion bash)” >> ~/.bashrc # add autocomplete permanently to your bash shell. You can also use a shorthand alias for kubectl that also works with completion: alias k=kubectl complete -o default […]
Receive Voice Call
This sketch receives a voice call from an Arduino or Genuino board equipped with a GSM shield. Once the call is received and connected, it shows the number that is calling, and hangs up. You’ll need to attach a speaker and microphone to hear the connected call and transmit your voice. Hardware Required Arduino or […]