7-zip command-line to recursively extract archives in sub-directories, and output them into those sub-directories

Question

I've got hundreds sub-directories, with each sub-directory having 1 or more archives in them. I want to recursively extract every archive in every sub-directory, with the extracted files ouputted in each sub-directory.

Starting with this:

DIR1
    SUBDIR2
    --->ZipFileA
    --->ZipFileB
    SUBDIR3
    --->ZipFileC
    --->ZipFileD

Want to end up with this:

DIR1
    SUBDIR2
    --->ExtractedZipFileA
    --->ExtractedZipFileB
    SUBDIR3
    --->ExtractedZipFileC
    --->ExtractedZipFileD

How do I do this?

I've tried...

7z x E:\Downloads\New -r -o*

... but this outputs everything in the main directory, rather than outputting them in their own sub-directories.

Answer 1

Working like a charm:

for /r %a in (*.zip) do 7z.exe e "%~a" -o"%~dpa"

Answer 2

I found the above listed:

for /r %a in (*.zip) do 7z.exe e "%~a" -o"%~dpa"

to expand everything into the current directory. Not exactly what I was looking for anyways.

So, assuming I am in a working directory which contains a number .zip files and each of those zip files contain additional zip files etc then the following will expand them all retaining the the paths:

for /r %A in ("*.zip") do 7z.exe x "%~dfA" -o"%~pnA"

To explain this there are two parts,

• search for files based on criteria
• for each file found do something

First part, search for /r %A ("*.zip")

search for files matching ("*.zip") and for each file found replace the variable %A with the filename then pass it to the second part ...I skipped over /r which is the recurse flag

second part, do something (so for each file found do...)

do 7z.exe x "%~dfA" -o"%~pnA"

do 7z.exe x - do 7zip extract
then two arguments for 7z
"%~dfA" : "%-df" bit gets the drive letter and fully qualified path for whatever follows it, in this case A follows it, which is a reference to our earlier declared A and is the file being passed to the do

-o"%~pnA" : -o is the 7zip output flag "%~pn extracts the path and filename (w/o ext) from whatever follows it, again it's A
example
given file: c:\test\foo.zip being passed to: -o"%~pnA"
"%-p" would extract the path from the file, *c:\test*
"n" would extract the simple filename, foo
resulting in c:\test\foo

Reference https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/for