script that is both a powershell script, and a f# script, that invokes the F# script

hex2text.fsx

#if false
return dotnet fsi --quiet --exec --use:"$(Get-Location)\$($MyInvocation.MyCommand.Name)" -- $args
#endif
// <#
//the first argument is the script name, so we get the tail
let args : string array = fsi.CommandLineArgs |> Array.tail

let hexByteToAscii (s:string) =
    System.Convert.ToByte(s,16)
    |> System.Convert.ToChar

let charsToString (chars:char[]) =
    new string (chars)

let hexToAscii (value:string) =
    value
    |>Seq.chunkBySize 2
    |>Seq.map ( hexByteToAscii << charsToString)
    |>Seq.toArray
    |>charsToString 

let out = (hexToAscii args[0])

printf "%s" out

// #>

hex2text.fsx.ps1

#if false
return dotnet fsi --quiet --exec --use:"$(Get-Location)\$($MyInvocation.MyCommand.Name)" -- $args
#endif
// <#
//the first argument is the script name, so we get the tail
let args : string array = fsi.CommandLineArgs |> Array.tail

let hexByteToAscii (s:string) =
    System.Convert.ToByte(s,16)
    |> System.Convert.ToChar

let charsToString (chars:char[]) =
    new string (chars)

let hexToAscii (value:string) =
    value
    |>Seq.chunkBySize 2
    |>Seq.map ( hexByteToAscii << charsToString)
    |>Seq.toArray
    |>charsToString 

let out = (hexToAscii args[0])

printf "%s" out

// #>

example f# from https://stackoverflow.com/questions/65477935/f-hex-to-ascii/65479989#65479989