Check for updates

#!/bin/zsh
thisbuild=$(sw_vers -buildVersion) if [[ $thisbuild[0,2] -lt 20 ]]; then
nohup osascript -e "display dialog \"Your macOS version is no longer supported.\" with title \"IT Department\" buttons {\"OK\"}" >/dev/null 2>&1 & disown; exit
fi
updates=$(softwareupdate -l 2>&1)
if echo $updates | grep -q "No new"; then echo "- OS is Current."; exit
elif echo $updates | grep -q "the following new"; then
echo "- OS is *NOT* Current."
nohup osascript -e "display dialog \"Apple reports updates to your OS or Apple-bundled
apps are available.\" with title \"IT Department\" buttons {\"OK\"}" >/dev/null 2>&1 & disown; exit else
echo "- Error during check."; exit fi