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For example I have Apache Web server where Mac dmg file is located. I want to modify for every download adding specific readme file, depending on the region where download request is coming from. A special shell script can do this job, but before I need to verify all script steps manually. This article explains how to do it on Centos6 64-bit Linux.

Preparation steps:
1. Install ELRepo (Before installing ELRepo check the current version: http://elrepo.org/tiki/tiki-index.php):


# rpm –import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
# yum install https://www.elrepo.org/elrepo-release-6-8.el6.elrepo.noarch.rpm


2. Install hfs and hfsplus Apple file system

As a Linux user, I need to get the content of a.dmg (Mac OSX disk image) file which contains an application installer. I tried dmg2dir (which requires dmg2img) which created an.img file but noth. DMG files are macOS disk image files. They are much like ISO files—their Windows-based counterpart. These disk images normally contain program installation files for macOS apps, but they can also be used to hold compressed files. If it’s an app written for macOS, you obviously won’t be able to install and run the app on Windows. How to install.dmg file to ubuntu. And a couple of other threads on askubuntu. The problem i'm facing are so: In the eHow they use something called dmg2dmg. Ubuntu seems to have dmg2img. So I used that instead. After I create the.img file, I try to create a data disk using the.img in brasero. Welcome to LinuxQuestions.org, a friendly and active Linux Community. You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features.


# yum install kmod-hfs
# yum install kmod-hfsplus

3. install dmg2img utility

Burn Dmg Linux


# yum install dmg2img

Resolving problems with dmg2img installation.
4. install genisoimage


# yum install genisoimage

After installation I rebooted my Linux device because it did not see Apple hfs and hfsplus Apple file system.

DMG modification:
Now we need some dmg file to play with. Let us download some, I selected Avast antivirus, you may used other:


curl -O https://install.avcdn.net/mac-av/10_9/AAFM/avast_security_online.dmg

Next we need to convert dmg file to img:


# dmg2img avast_security_online.dmg avast_security_online.img
dmg2img v1.6.2 is derived from dmg2iso by vu1tur (to@vu1tur.eu.org)
avast_security_online.dmg –> avast_security_online.img
reading property list, 8326 bytes from address 15071232 …
decompressing:
opening partition 0 … 100.00% ok
opening partition 1 … 100.00% ok
opening partition 2 … 100.00% ok
opening partition 3 … 100.00% ok
opening partition 4 … 100.00% ok
opening partition 5 … 100.00% ok
opening partition 6 … 100.00% ok
opening partition 7 … 100.00% ok
Archive successfully decompressed as avast_security_online.img
Image appears to have GUID Partition Table with 1 HFS+ partition.
You should be able to mount it [as root] by:

Zip file download mac. modprobe hfsplus
mount -t hfsplus -o loop,offset=20480 avast_security_online.img /mnt

Check result of conversion:


# ls -l avast_security_online*
-rw-r–r– 1 root root 15080070 Mar 12 12:19 avast_security_online.dmg
-rw-r–r– 1 root root 18284544 Mar 12 12:24 avast_security_online.img

Create /mnt/dmg directory:


# mkdir /mnt/dmg
Open dmg linux

Mount converted avast_security_online.img to /mnt/dmg directory:


# mount -t hfsplus -o loop,offset=20480 avast_security_online.img /mnt/dmg

Linux Mint Dmg

Check content of/mnt/dmg directory after mounting:


# ls -l /mnt/dmg
total 12520
-rw-r–r–. 1 506 games 12816864 Feb 25 08:26 Avast Security.pkg
drwxr-xr-x. 1 506 games 3 Feb 25 08:26 com.avast.uninstall.app
Sometime mount produces the following error: “mount: wrong fs type, bad option, bad superblock on /dev/loop0, missing codepage or helper program, or other error”.

If hfsplus has been installed successfully, check offet and sizelimit values:
# fdisk -l abc.img
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.

Disk abc.img: 47 MB, 47226880 bytes, 92240 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: gpt
Disk identifier: 40AD8A9F-9A0A-41E2-85D1-0559B67AE123

# Start End Size Type Name
1 40 92199 45M Apple HFS/HFS+ disk image
#

recalculating output of fdisk, to get the same result as from parted:
Offset: 40*512 = 20480
sizeLimit 45*1024*1024 = 47185920

Now mount it successful:
# mount -v -t hfsplus -o loop,offset=20480,sizelimit=47185920 abc.img /mnt/dmg/
mount: /dev/loop0 mounted on /mnt/dmg

Create /tmp/dmg directory:


# mkdir /tmp/dmg

Copy content of /mnt/dmg directory to /mnt/tmp directory, then copy your readme file to /tmp/dmg directory.
Check /tmp/dmg directory content


# ls /tmp/dmg
Avast Security.pkg com.avast.uninstall.app readme.txt

Linux Dmg To Iso

Create new dmg file from /tmp/dmg directory:

Burn Dmg Linux


# genisoimage -V “AvastInstallation” -D -R -apple -no-pad -o newAvast.dmg /tmp/dmg

Unmount /mnt/dmg


# umount /mnt/dmg

Testing:
Download newAvast.dmg file on your Mac machine, doulbe click on the file and what you will see:
or check AvastInstallation volume:


# ls -l /Volumes/AvastInstallation/
total 25040
-rw-r–r– 1 root wheel 12816864 Mar 14 12:37 Avast Security.pkg
drwxr-xr-x 3 root wheel 2048 Mar 14 12:37 com.avast.uninstall.app
-rw-r–r– 1 root wheel 0 Mar 14 12:40 readme.txt

File Extension Dmg Free Download


This weekend is the first Shepton Mallet Antiques & Collectors fair of the year. Dupage co fairgrounds. On Friday the fair opens at 8am and admission for adults is reduced to £5.With usually a large turn out of stallholders and buyers there’s is often a good mix of items for sale from all types of furniture, pottery, glass, silver to specialist collectables such as post cards and militaria.See DMG Fair’s website for further details about this antique fair and the other fairs they organise (Ardginly, Shepton Mallet and Detling).