Command Line Mac Unpack Dmg
Terminal
Hey
Terminal, the wonder app, can do pretty much anything. This post is going to show you how you can unzip files using Terminal. I will also show you how you can can combine commands to download and unzip files really quickly. Its really simple to complete. You may want to use Terminal since you can access extra options which you may normally be hidden away from you.
The first step is to open Terminal. Use the “cd” command to change the directory to the location where you want to unzip the zip file. For example you can use:
Appdmg is a simple, easy-to-use, open-source command line program that creates dmg-files from a simple json specification. Take a look at the readme at the official website: Take a look at the readme at the official website. DMG file is a compressed file format being used widely on Mac computer. Windows OS doesn't natively support DMG disk image files, so if you need to create a bootable USB drive from a DMG file, mostly for bootable Mac OS X or macOS installation USB, you need a special utility to help you complete the task.
cd ./Desktop
The next step is to invoke the unzip command. Type the following into Terminal. This assumes you have a zip file ready to unzip.
unzip file.zip
This will unzip you file into you desktop location. If you want to change this location you can type the following.
unzip file.zip -d ~/another/folder
You can also remove all of the text that Terminal will output when you run the command by adding a modifier/option to the front of the syntax.
unzip -q file.zip
Optionally you can also add more information by adding a verbose option. This will show you all of the details of the file you unzip.
unzip -v file.zip
You can combine this command with other command so you can download and unzip a file automatically. For example if you have wget installed you can type in Terminal.
cd ~/download;wget http://www.example.com/file/zip;unzip file.zip
The different commands are separated by a semi-colon (;). The previous command will change your directory to your downloads folder. It will then grab the zip file from your website and unzip the file to your location.
The one problem with unzip command is that it creates a an extra folder called “__MACOSX” this folder would normally be hidden as it stores extra data that you don’t need to see. You can easily get rid of this by combining the delete command with the unzip command.
unzip file.zip;rm -rf __MACOSX
That will unzip the file and then delete this extra folder. You can of course combine this with the download command previously.
cd ~/download;wget http://www.example.com/file/zip;unzip file.zip;rm -rf __MACOSX
You could even take this further by moving files and folders although that would be out of the scope of this article. How quick do you reckon it would be to type that command compared to downloading a zip folder normally and then normally extracting it. You do have to type more, but it is a lot less clicking and searching in Finder.
If you want to take your skills with Terminal a bit further I recommend you check out the Terminal Category on this site. If you fancy reading a book there is a couple on Amazon that I regularly see mentioned and recommend, O’reilly Unix Geeks and Unix Under the Hood both are designed for Mac OS X and take Terminal further.
Command Line Mac Unpack Dmg Software
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Where To Next?
Since macOS is based on Unix there are a number of ways to compress files and folders within the filing system using Unix based application code, below are a few options using the Terminal or command line interface (cli). The default command line application interface in macOS is the Terminal and is stored in /Applications/Utilities.
File and folder compression saves on file size and ensures the contents are captured and delivered or stored as one monolithic file. A compressed file which contains files and folders is generally referred to as an archive. Here are some built-in compression applications you can use including zip, tar, gz, bz2, gz and dmg.
ZIP – Cross Platform
First up is ZIP one of the most commonly used compression techniques used across all platforms
To compress
Ni dmg 2 2 nomenclature code. The obtained materials were characterized by scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis, high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), Raman spectroscopy and thermogravimetry analysis (TGA).
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To extract
If you want to make a zip without those invisible Mac resource files such as “_MACOSX” or “._Filename” and .ds store files, use the “-X” option in the command so:
TAR.GZ – Cross Platform
Second up is TAR, an old favorite on Unix/Linux – you add the GZ for the compression – compresses tighter than zip
To compress
To extract
TAR.BZ2 – Cross Platform
A variation on TAR GZ but with better compression than both tar.gz and zip.
To compress
To extract
GZ
Without the tar
To extract
DMG – macOS Only
This one is macOSnative only – for a GUI interface use /Applications/Utilities/Disk Utility – for command line use:
To create
To mount
To view
To Eject
You can also use a number of different formats for creating a .dmg
- UDZO – Compressed image (default)
- UDRO – Read-only image
- UDBZ – Better compressed image
- UDRW – Read/Write image
- UDTO – DVD disk image
Command Line Mac Unpack Dmg Mac
That’s the low down, the more common compression packages available will typically be covered in one of the above.