文本替换与删除

Powershell下，将"train-remapped.csv"文件中的“， ”替换成","，保存在新的文件"new.csv"中 

$oldfile="C:\Users\Yiwei\Documents\Fanyiwei\Essays\HierClassification\LSHTC\train-remapped\train-remapped.csv"
$newfile="C:\Users\Yiwei\Documents\Fanyiwei\Essays\HierClassification\LSHTC\train-remapped\new.csv"
$text = (Get-Content -Path $oldfile -ReadCount 0) -join "`n"
$text -replace ', ', ',' | Set-Content -Path $newfile

删除"new.csv"文件的第一行

$newnewfile="C:\Users\Yiwei\Documents\Fanyiwei\Essays\HierClassification\LSHTC\train-remapped\newnew.csv"

Get-Content $newfile |select-Object -Skip 1 |Set-Content $newnewfile