Example structure:
if [ -f "Payload" ]; then echo "Decompressing Payload ..." cat Payload | gunzip -dc | cpio -i 2>/dev/null || pbzx -n Payload | cpio -i fi how to convert pkg to iso
pbzx -n Payload | cpio -i For a macOS installer ISO, copy the extracted contents into a folder that mimics a bootable installer (e.g., copy Install macOS.app contents). For a simple data ISO, skip this. Example structure: if [ -f "Payload" ]; then
iso_contents/ Applications/ (if macOS installer) Library/ System/ usr/ .IABootFiles (for bootability) On macOS: how to convert pkg to iso
echo "Creating ISO ..." hdiutil makehybrid -iso -joliet -o "$OUT" .
cd pkg_extracted cat Payload | gunzip -dc | cpio -i