PowerShell分割按行数分割文本文件

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############################################# 
# Split a log/text file into smaller chunks # 
############################################# 
# 
# WARNING: This will take a long while with extremely large files and uses lots of memory to stage the file 
# 
 
# Set the baseline counters 
# 
# Set the line counter to 0 
$linecount = 0 
# Set the file counter to 1. This is used for the naming of the log files 
$filenumber = 1 
 
# Prompt user for the path 
$sourcefilename = Read-Host "What is the full path and name of the log file to split? (e.g. D:mylogfilesmylog.txt)" 
 
# Prompt user for the destination folder to create the chunk files 
$destinationfolderpath = Read-Host "What is the path where you want to extract the content? (e.g. d:yourpath)" 
 
Write-Host "Please wait while the line count is calculated. This may take a while. No really,it could take a long time." 
 
# Find the current line count to present to the user before asking the new line count for chunk files 
Get-Content $sourcefilename | Measure-Object | ForEach-Object { $sourcelinecount = $_.Count } 
 
#Tell the user how large the current file is 
Write-Host "Your current file size is $sourcelinecount lines long" 
 
# Prompt user for the size of the new chunk files 
$destinationfilesize = Read-Host "How many lines will be in each new split file?" 
 
# the new size is a string,so we convert to integer and up 
# Set the upper boundary (maximum line count to write to each file) 
$maxsize = [int]$destinationfilesize  
 
Write-Host File is $sourcefilename - destination is $destinationfolderpath - new file line count will be $destinationfilesize 
 
# The process reads each line of the source file,writes it to the target log file and increments the line counter. When it reaches 100000 (approximately 50 MB of text data) 
$content = get-content $sourcefilename | % { 
 Add-Content $destinationfolderpathsplitlog$filenumber.txt "$_" 
  $linecount ++ 
  If ($linecount -eq $maxsize) { 
    $filenumber++ 
    $linecount = 0 
  } 
} 
 
# Clean up after your pet 
[gc]::collect()  
[gc]::WaitForPendingFinalizers() 

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