gzip multiple files windows 7

Zip multiple files into individual .gz files (windows)

stackoverflow.com › questions › 67268617 › zip-multiple-files-into-individual-gz-files-windows

This answer is a bit late, but to help myself and others who come across this in the future, one can use a shell script to execute the 7Zip command line on each file.

The key lines below are the foreach loop and the PowerShell call operator for the 7z.exe executable.

Command a for adding a file to an archive.
-tgzip to specify Gzip format.
"$newFileName.gz" as the archive name.
$newFileName as the name of the file to be zipped.

Warning! In my use case, I was renaming files with new dates in the filenames, you might want to change the logic...

PowerShell Example:

$files=[System.IO.FileInfo[]](Get-ChildItem ./*.txt);

$now=[System.DateTime]::Now.Date;
$span=[System.TimeSpan]::FromDays($files.Length);
$startDate=span;
$files=Sort-Object -InputObject $files -Property Name;

$index=0;
foreach ($file in $files) {
    $newDateText = ($startDate + [TimeSpan]::FromDays($index)).ToString('yyyyMMdd');
    $newFileName = "myPrefix.$newDateText.txt";
    Write-Host "file.Name) => " -ForegroundColor Cyan -NoNewline;
    Write-Host "$newFileName.gz" -ForegroundColor Green;
    #Rename-Item -Path $file -NewName $newFileName;
    & "c:\Program Files\7-Zip\7z.exe" a -tgzip "$newFileName.gz" $newFileName
    $index += 1;
};

Answer from Zarepheth on Stack Overflow

Stack Overflow

stackoverflow.com › questions › 67268617 › zip-multiple-files-into-individual-gz-files-windows

gzip - Zip multiple files into individual .gz files (windows) - Stack Overflow

Top answer

1 of 3

This answer is a bit late, but to help myself and others who come across this in the future, one can use a shell script to execute the 7Zip command line on each file.

The key lines below are the foreach loop and the PowerShell call operator for the 7z.exe executable.

Command a for adding a file to an archive.
-tgzip to specify Gzip format.
"$newFileName.gz" as the archive name.
$newFileName as the name of the file to be zipped.

Warning! In my use case, I was renaming files with new dates in the filenames, you might want to change the logic...

PowerShell Example:

$files=[System.IO.FileInfo[]](Get-ChildItem ./*.txt);

$now=[System.DateTime]::Now.Date;
$span=[System.TimeSpan]::FromDays($files.Length);
$startDate=span;
$files=Sort-Object -InputObject $files -Property Name;

$index=0;
foreach ($file in $files) {
    $newDateText = ($startDate + [TimeSpan]::FromDays($index)).ToString('yyyyMMdd');
    $newFileName = "myPrefix.$newDateText.txt";
    Write-Host "file.Name) => " -ForegroundColor Cyan -NoNewline;
    Write-Host "$newFileName.gz" -ForegroundColor Green;
    #Rename-Item -Path $file -NewName $newFileName;
    & "c:\Program Files\7-Zip\7z.exe" a -tgzip "$newFileName.gz" $newFileName
    $index += 1;
};

2 of 3

If you're not forced to use 7-zip, there are command-line alternatives. One is to download the gzip.exe binary from https://gnuwin32.sourceforge.net/packages/gzip.htm and run that on the command line:

c:\my_data> gzip.exe -v *.data

I do not guarantee that this binary is safe, but I have no particular reason to believe it is not. Your IT department may not approve of downloading and executing binaries.

Or, if you happen to have either Git for Windows, MinGW compiler or MSYS2 compiler environment installed, those environments include gzip. Open the environment terminal (f.ex. Git Bash):

~ > cd /c/my_data
/C/my_data > gzip -v *.data

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More results from stackoverflow.com

Super User

superuser.com › questions › 388504 › any-method-to-batch-compress-multiple-files

windows 7 - Any method to batch-compress multiple files? - Super User

Top answer

1 of 6

Just use the gzip alone.

by default, gzip will take any file passed to it and compress it and add the .gz extension. i.e.

gzip dir/* -r

would gzip every file in dir/* (and sub-directories).

2 of 6

Try the following in powershell (after going to the correct directory):

$files = get-childitem
foreach ($file in $files) {gzip $file}

That will go through all the files in the directory, and compress all of them.

Edit: If you want to do all of the files in a directory tree (i.e. in a folder and all its subfolders) just change $files = get-childitem to $files = get-childitem -recurse

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