ls -le

ls -l@

chmod -N some_file_name.dat

man chmod

xattr -c some_file_name.dat

man xattr

nettop
## only non-loopback without name resolution
nettop -t external -n

man nettop

netstat -an -ptcp | grep LISTEN

man netstat

netstat -an -ptcp | grep ESTABLISHED

man netstat

netstat -n -pudp

man netstat

sudo killall -HUP mDNSResponder

ipconfig getpacket en0
ipconfig getv6packet en0

man ipconfig

system_profiler | less

man system_profiler

sysctl machdep.cpu

man sysctl

## verify code signature of an app bundle (including embedded frameworks/libraries)
codesign --verify --verbose --deep /Applications/appToCheck.app
## check if Gate Keeper would allow execution of an app
spctl --verbose --assess --type execute /Applications/appToCheck.app
## check whether an app was notarized by Apple (required as of macOS 10.15)
codesign --test-requirement="=notarized" --verify --verbose /Applications/appToCheck.app

man codesign man spctl

### show linked shared libraries
otool -L example.so
### show load commands (like min OS version)
otool -l examble.so

man otool

plutil -p some.plist

man plutil

## query update servers and list available updates
softwareupdate -l
## install all available updates
softwareupdate -i -a

man softwareupdate

defaults write com.apple.dock persistent-apps -array-add '{"tile-type"="spacer-tile";}'; killall Dock
defaults write com.apple.dock persistent-apps -array-add '{"tile-type"="small-spacer-tile";}'; killall Dock

fdesetup status
sudo fdesetup validaterecovery
## you would probably want to do that after you completed
## setting up your new Mac and reassure yourself that the
## master key you've written down is correct

kextstat

tmutil status

defaults write com.apple.desktopservices DSDontWriteNetworkStores true