Ian Alexander

The 'tr' command can be used to ...

# Convert case
echo 'example' | tr '[:lower:]' '[:upper:]'

# Delete characters:
echo 'Hello 123' | tr -d '[:digit:]'

# Squeeze repeated characters:
echo 'hiiiiii' | tr -s 'i'

‘tr’ Command in Linux | String Manipulation Guide (ioflood.com)

@alesya.social I remember a flake.lock file is generated during a build capturing exact versions of inputs used for the build, allows reproduction of the exact environment. Flakes use fixed references to refer to specific versions of dependencies and provide isolation avoiding global state changes.

When you see the enormous tree arrive you will know.

Thank you for that information - I will follow accordingly.

Thank you

I have a single user system/configured home manager - regarding flakes I am considering if it is worth the effort. A flake will allow reproduceable environments/preserve versions and dependencies. However, I have my system hosted on a vps so have setup daily backups so may not need to use a flake.

@alesya.social to flake or not to flake that is my question 😕

Very amusing - made my day 👍😂

Thank you yes that is so much better.

YouTube Video - Using a 1930 Teletype as a Linux Terminal https://www.youtube.com/watch?v=2XLZ4Z8LpEE

Using a 1930 Teletype as a Linux Terminal - YouTube

https://youtu.be/2XLZ4Z8LpEE?si=mnVkWa5-q5rkmwLj

It works !!

use 'ctrl+r' to search and repeat past commands. Start typing a keyword, and it will find and display matching commands from your history. Saves time and makes navigating the command line easy.

It is indeed

That my vitrectomy went well 🙂

Did you know that the Unix command line has a built-in calculator? You can use the bc command to perform arithmetic operations, such as bc <<< "2+2" or bc <<< "sqrt". You can also use the expr command for simple calculations, such as expr 2 + 2 or expr 25 / 5.