Double-click the unopened ZIP — the file should extract automatically. If that doesn't work, hold down the control key and click the ZIP file icon. Choose "Open With" and then select "Archive Utility." The utility will extract the ZIP files, and you can find them in the same folder where you downloaded them.
In it's simplest form, when used without any option, the unzip command extracts all files from the specified ZIP archive to the current directory.
If you already have Java Development Kit on your PC and the bin directory is in your path (in most cases), you can use the command line:
jar xf test.zip
or if not in your path:
C:\Java\jdk1.6.0_03\bin>jar xf test.zip
Complete set of options for the jar tool available here.
Examples:
Extract jar file
jar x[v]f jarfile [inputfiles] [-Joption]
jar x[v] [inputfiles] [-Joption]
You could use :
http://membrane.com/synapse/library/pkunzip.html
or
7zip: http://www.7-zip.org/download.html
Free byte zip: http://www.freebyte.com/fbzip/
or infozip: http://infozip.sourceforge.net/
7-Zip, it's open source, free and supports a wide range of formats.
7z.exe x myarchive.zip
Firstly, write an unzip utility using vbscript to trigger the native unzip functionality in Windows. Then pipe out the script from within your batch file and then call it. Then it's as good as stand alone. I've done it in the past for numerous tasks. This way it does not require need of third party applications, just the one batch file that does everything.
I put an example on my blog on how to unzip a file using a batch file:
' j_unzip.vbs
'
' UnZip a file script
'
' By Justin Godden 2010
'
' It's a mess, I know!!!
'
' Dim ArgObj, var1, var2
Set ArgObj = WScript.Arguments
If (Wscript.Arguments.Count > 0) Then
var1 = ArgObj(0)
Else
var1 = ""
End if
If var1 = "" then
strFileZIP = "example.zip"
Else
strFileZIP = var1
End if
'The location of the zip file.
REM Set WshShell = CreateObject("Wscript.Shell")
REM CurDir = WshShell.ExpandEnvironmentStrings("%%cd%%")
Dim sCurPath
sCurPath = CreateObject("Scripting.FileSystemObject").GetAbsolutePathName(".")
strZipFile = sCurPath & "\" & strFileZIP
'The folder the contents should be extracted to.
outFolder = sCurPath & "\"
WScript.Echo ( "Extracting file " & strFileZIP)
Set objShell = CreateObject( "Shell.Application" )
Set objSource = objShell.NameSpace(strZipFile).Items()
Set objTarget = objShell.NameSpace(outFolder)
intOptions = 256
objTarget.CopyHere objSource, intOptions
WScript.Echo ( "Extracted." )
' This bit is for testing purposes
REM Dim MyVar
REM MyVar = MsgBox ( strZipFile, 65, "MsgBox Example"
Use it like this:
cscript //B j_unzip.vbs zip_file_name_goes_here.zip
As other have alluded, 7-zip is great.
Note: I am going to zip and then unzip a file. Unzip is at the bottom.
My contribution:
Get the
7-Zip Command Line Version
Current URL
http://www.7-zip.org/download.html
The syntax?
You can put the following into a .bat file
"C:\Program Files\7-Zip\7z.exe" a MySuperCoolZipFile.zip "C:\MyFiles\*.jpg" -pmypassword -r -w"C:\MyFiles\" -mem=AES256
I've shown a few options.
-r is recursive. Usually what you want with zip functionality.
a is for "archive". That's the name of the output zip file.
-p is for a password (optional)
-w is a the source directory. This will nest your files correctly in the zip file, without extra folder information.
-mem is the encryption strength.
There are others. But the above will get you running.
NOTE: Adding a password will make the zip file unfriendly when it comes to viewing the file through Windows Explorer. The client may need their own copy of 7-zip (or winzip or other) to view the contents of the file.
EDIT::::::::::::(just extra stuff).
There is a "command line" version which is probably better suited for this: http://www.7-zip.org/download.html
(current (at time of writing) direct link) http://sourceforge.net/projects/sevenzip/files/7-Zip/9.20/7za920.zip/download
So the zip command would be (with the command line version of the 7 zip tool).
"C:\WhereIUnzippedCommandLineStuff\7za.exe" a MySuperCoolZipFile.zip "C:\MyFiles\*.jpg" -pmypassword -r -w"C:\MyFiles\" -mem=AES256
Now the unzip portion: (to unzip the file you just created)
"C:\WhereIUnzippedCommandLineStuff\7zipCommandLine\7za.exe" e MySuperCoolZipFile.zip "*.*" -oC:\SomeOtherFolder\MyUnzippedFolder -pmypassword -y -r
As an alternative to the "e" argument, there is a x argument.
e: Extract files from archive (without using directory names)
x: eXtract files with full paths
Documentation here:
http://sevenzip.sourceforge.jp/chm/cmdline/commands/extract.htm
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