列出文件夹中最大行数的.txt文件（文件），然后列出最小行数的txt文件（文件）

Question

I have this code, but it is not working properly

$minLines = 1
$maxLines = 1000
Get-ChildItem . -Filter "*.txt" -Recurse |
    Where-Object {
        $numLines = Get-Content $_.FullName |
            Measure-Object -Line |
            Select-Object -ExpandProperty Lines
        if (($numLines -gt $minLines) -and ($numLines -lt $maxLines)) {
            return $_
        }
    }

I have in one directory hundreds of text files some of them has over 700 lines some just 4 or 5. Sometimes min or max criteria meet dozens of files with same number of lines.I would like at first list file or files with minimum number of lines and than file or files(if more than one) with max number of lines.

Probably at first in $minLines and $maxLines shuld be stored somehow maximum and minimum number of lines of all text files of a directory and then list file or files matching minimum number of lines and then maximum number of lines.

I've also find this piece of code:

dir . -filter "*.txt" -Recurse -name | foreach{(GC $_).Count} | measure-object -max -min

It can by useful too. This code give us information about max and min number of lines in a folder.

Answer 1

You could go with something like this one-liner:

Get-ChildItem . *.txt -Recurse | Select FullName, @{n="NumLines";e={(gc $_).count}} | 
    Sort NumLines | Group NumLines | Select -First 1 -Last 1

To see the full names of each file:

Get-ChildItem . *.ps1 -Recurse | Select FullName, @{n="NumLines";e={(gc $_).count}} |
    Sort NumLines | Group NumLines | Select -First 1 -Last 1 -ExpandProperty Group

Answer 2

This will set the min and the max values:

Get-ChildItem C:\Users\Public\Documents\Test\ | % {
    $lines = (Get-Content $_.FullName).Count
    if (($min -eq $null) -and ($max -eq $null)) {
        $min=$lines
        $max=$lines
        }
    if ($lines -lt $min) {
        $min=$lines
        }
    if ($lines -gt $max) {
        $max=$lines
        }
    }

This will get the files with the maximum number of lines:

Get-ChildItem C:\Users\Public\Documents\Test\ | ? {(Get-Content $_.FullName).Count -eq $max}

And this will get the files with the minimum:

Get-ChildItem C:\Users\Public\Documents\Test\ | ? {(Get-Content $_.FullName).Count -eq $min}

If you want the filenames and the number of lines you could append this to the maximum line or modify it slightly to get the minimum:

| % {("File " + $_.FullName + " has " + $max + "lines.")}

From this you can use Out-File to get it to a .txt file.

| Out-File C:\max_lines.txt