mac中用命令行创建dmg

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  1. Make sure that “Enable access for assistive devices” is checked in System Preferences>>Universal Access. It is required for the AppleScript to work. You may have to reboot after this change (it doesn’t work otherwise on Mac OS X Server 10.4).

  1. 创建可读写的DMG. It must be larger than the result will be. In this example, the bash variable “size” contains the size in Kb and the contents of the folder in the “source” bash variable will be copied into the DMG:

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    hdiutil create -srcfolder "${source}" -volname "${title}" -fs HFS+ \
    	-fsargs "-c c=64,a=16,e=16" -format UDRW -size ${size}k ${output}.dmg
    # 或者大小的单位用“兆”:
    hdiutil create -srcfolder "${source}" -volname "${title}" -fs HFS+ \
    	-fsargs "-c c=64,a=16,e=16" -format UDRW -size ${size}m ${output}.dmg

  2. Mount the disk image, and store the device name (you might want to use sleep for a few seconds after this operation):

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    device=$(hdiutil attach -readwrite -noverify -noautoopen "pack.temp.dmg" | \
             egrep '^/dev/' | sed 1q | awk '{print $1}')

  3. Store the background picture (in PNG format) in a folder called “.background” in the DMG, and store its name in the “backgroundPictureName” variable.

  4. Use AppleScript to set the visual styles (name of .app must be in bash variable “applicationName”, use variables for the other properties as needed):

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    echo '
       tell application "Finder"
         tell disk "'${title}'"
               open
               set current view of container window to icon view
               set toolbar visible of container window to false
               set statusbar visible of container window to false
               set the bounds of container window to {400, 100, 885, 430}
               set theViewOptions to the icon view options of container window
               set arrangement of theViewOptions to not arranged
               set icon size of theViewOptions to 72
               set background picture of theViewOptions to file ".background:'${backgroundPictureName}'"
               make new alias file at container window to POSIX file "/Applications" with properties {name:"Applications"}
               set position of item "'${applicationName}'" of container window to {100, 100}
               set position of item "Applications" of container window to {375, 100}
               update without registering applications
               delay 5
               close
         end tell
       end tell
    ' | osascript

  5. Finialize the DMG by setting permissions properly, compressing and releasing it:

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    chmod -Rf go-w /Volumes/"${title}"
    sync
    sync
    hdiutil detach ${device}
    hdiutil convert "/pack.temp.dmg" -format UDZO -imagekey zlib-level=9 -o "${finalDMGName}"
    rm -f /pack.temp.dmg