Glen.tx.rr.com# hdiutil
hdiutil: missing verb
Usage: hdiutil is one of the following:
help flatten
attach imageinfo
detach isencrypted
eject makehybrid
verify mount
create mountvol
compact unmount
convert plugins
burn resize
info segment
checksum pmap
chpass udifderez
erasekeys udifrez
unflatten
softwareupdate
Glen.tx.rr.com# softwareupdate
usage: softwareupdate [ ...]
** Manage Updates:
-l | --list List all appropriate update labels (options: --no-scan, --product-types)
-d | --download Download Only
-e | --cancel-download Cancel a download
-i | --install Install
sw_vers
To query the operating system for its current version from the command line (or terminal window) you may execute the sw_vers command. This is useful in scripting and automation.