Windows powershell.ps

//remove 4 from the file name and replace it with empty string
get-childitem -path c:\test -filter *4* -Recurse | rename-item -newname {$_.name -replace "4",""}

get-childitem -path G:\Lyf\EDU2 -filter *’* -Recurse | rename-item -newname {$_.name -replace "’",""} 

gci G:\Lyf\EDU2\2\Coursera\FIN -r *.csv `
    | Where-Object { ... } `
    | ForEach-Object { & 7z  $_.FullName".zip" $_.FullName}

    Compress-Archive -Path 

     7z a b.zip b

gci C:\temp -r *.csv `
    | Where-Object { ... } `
    | ForEach-Object { & 'c:\temp\bin\gzip.exe' $_.FullName}
G:\Lyf\EDU2\3\Coursera\CS

$dir = dir G:\Lyf\EDU2\3\Coursera\CS | ?{$_.PSISContainer}

foreach ($d in $dir){
    $name = Join-Path -Path $d.FullName -ChildPath ($d.Name + ".zip")
    $path = Join-Path -Path $d.FullName -ChildPath "*"

    & "7z" a $name $path
}