paul-d-ray

Last Friday of Each Month

I had a need to get the last Friday of each month of 2025.

• This can be changed to get any other last day by changing the wday variable.
  • su, mo, tu, we, th, fr, sa

Nushell Code

let wday = 'fr'
let year = 2025
cal -m -t --week-start $wday --full-year $year |

paul-d-ray

Purpose

I had a need to add a percentage, in this case 35%, to a list of numbers. This nushell code allows this to be done in three lines of code.

Nushell Code

[50 55 60 65 70 75 80 85 90 95] | each { |it|
    let multiplied = ($it * 1.35);
    { amount: $it, multiplied: $multiplied, addamt: ($multiplied - $it) }
}

paul-d-ray

Month Number and Month Name

I had a need to get the month number and month name of the odd number moonths.

• This code can be changed to get the even months by changing the mod statment (1 to 0).
• To get all months, comment out the mod statement.

Code for Odd Months

1..12 |
each { |x|
    {

paul-d-ray

In Windows, I have programs that have the updates managed a number of ways. I don't like to have programs auto update.

• I like to wait a few days (weeks) to update a program to see if there are any issues caused by the update.
• Sometimes a program update will:
  • remove features / functions that I like to use.
  • cause issues with other programs.
  • cause system issues (even a system crash).
• I also have auto updates turned off in Windows. I run the updates manually.

paul-d-ray

For this last 15 years I have always had a calculator open and running in my Windows PC. I used the calculate to quicky calculate percentages, multiply rates.
I also use the calculatr for just a quick note (I know not really the purpose for a calculator).¹

SpeedCrunch

SpeedCrunch

• I used this after I found out about it around 2007.
• At the time, I wished it had a dark mode, and in 2014 (version 0.11) it did have dark mode.

paul-d-ray

Show all factors for a given number

Small number

Nushell code

let n = 24
  1..($n | math sqrt | math floor) |
    where { |$f| $n mod $f == 0 } |
  each { |$f| [$f (($n / $f) | into int) ] } |
  sort | grid -w 80

paul-d-ray

This was from Nushell's Discord channel, on 2025/08/10, in the help chat.

@Bahex @timtimtim

I have some file sizes in a table like this [ {size: 12B} {size: 34B} {size: 56B} ]. How can I add a column to this table of the "accumulated" size as we iterate through the records? In this instance, it'd be additional fields (say accumulated) with values [ {accumulated: 12B} {accumulated: 46B} {accumulated: 102B} ], where 46 = 12 + 34, and 102 = 12 + 34 + 56. I'm trying to do this without a global counter variable if possible. (If the only reasonable solution is a counter variable, then I'd know how to do that)

paul-d-ray

Vowels Histogram

Using the unixdict.txt file, get the vowels, consonants, and word length of each word.

Nushell code

open unixdict.txt
  | lines
  | filter {|w| ($w | str length) > 3 }
  | filter {|w| not ($w in [
      a e i o u i a an and are as at be
      by for from how in is it of on or

paul-d-ray

Get a list of US states that have have more vowels than consonants

Sort by Numbers of Vowels

Nushell Code

[
  "Alabama", "Alaska", "Arizona", "Arkansas", "California", "Colorado", "Connecticut",
  "Delaware", "Florida", "Georgia", "Hawaii", "Idaho", "Illinois", "Indiana", "Iowa",
  "Kansas", "Kentucky", "Louisiana", "Maine", "Maryland", "Massachusetts", "Michigan",

paul-d-ray

Update a column and Polars Sum

I have a table of Software purchased and / or donated to free software. I found I had a record that should have a type of Free instead of Paid.

Update a Column using Nushell

Wrong Type value

open software.tsv | 
  update Type { |row| if $row.Company =~  "Eric" { "Free" } else { $row.Type } }| 
  save -f software.tmp.tsv; mv -f software.tmp.tsv software.tsv