make_dmg

#!/bin/csh -f
# script to build an OSX .dmg file from a release area
# useful resources:
#    https://developer.apple.com/library/archive/documentation/Porting/Conceptual/PortingUnix/distributing/distibuting.html

set release = "release"           ; # set of files to include in dmg directory name
set dmgtmp  = "tmp.dmg"           ; # temporary file; it is deleted at the end
set dmgname = "WangEmu_3.0.dmg"   ; # name of .dmg file to produce
set volname = "WangEmu3.0"        ; # name of the volume when the dmg is mounted

echo "creating initial disk image (40 MB)"
hdiutil create -size 40m -fs HFS+ -volname "$volname" "$dmgtmp"

echo "attaching tmp disk image"
hdiutil attach "$dmgtmp"

echo "copying files to disk image"
cp -r release "/Volumes/$volname/$volname"

set dev = `hdiutil attach "$dmgtmp" | cut -f 1 | head -1`
echo "unmmounting $dev"
hdiutil detach $dev

echo "converting image to read-only"
hdiutil convert "$dmgtmp" -format UDZO -o "$dmgname"

rm "$dmgtmp"