Airport Utility For Mac Os High Sierra

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You can never have too many tools, and when they come free in macOS – in Sierra, at least – so much the better. This article is about a handy combination of Wi-Fi functions hidden away in one of Apple’s private frameworks, so its features could change without warning, and you must keep it a secret.

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The tool is at /System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport but don’t be deterred by its lengthy path. It doesn’t have a man file, of course, and is currently undergoing something of a mid-life crisis: it looks like two separate tools rolled into one.

airport legacy command set

Ask for its usage info, with
/System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport -h
and it offers you five conventional arguments:

  • -c[arg] sets the first Airport interface to use the channel number given as arg
  • -z dissociates the first Airport interface from any network
  • -I prints the current status for the first Airport interface
  • -s[arg] performs a wireless broadcast scan, which can be directed if you provide a channel number as arg
  • –psk –password=[pwd] –ssid[arg] creates PSK from the given password pwd and SSID arg.

Of these, the wireless broadcast scan using
/System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport -s
is probably most useful, as it reports the SSID, BSSID, RSSI (signal strength from -100 to 0), channel, and security information for all known base stations.

/System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport -I
is also pretty handy, as it reports full details for the first Airport interface in that Mac. This includes signal strength, noise, transmission rates, link authorisation, channel, and more.

airport new command set

If you enter
/System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport -x
instead of -h, you will see the other side of this tool, which is used thus:
/System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport interface verb

If you don’t specify the interface to be used, it will use the first Airport interface (en1 perhaps), just as with the old command set.

The verb must be one of:

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  • prefs – which displays the Airport preferences, and can be used to edit them in detail
  • logger – monitors the Airport driver’s log facility
  • sniff – captures 802.11 frames over a specified channel to /tmp (requires sudo)
  • debug – enables and configures Airport debug logging

So, for example,
/System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport prefs
shows the current preference settings for the first Airport interface, in my case returning
AirPort preferences for en1:
DisconnectOnLogout=NO
Unable to retrieve JoinMode
JoinModeFallback=DoNothing
RememberRecentNetworks=YES
RequireAdminIBSS=NO
RequireAdminNetworkChange=NO
RequireAdminPowerToggle=NO
WoWEnabled=YES

You might then use
sudo /System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport prefs DisconnectOnLogout=YES
to set disconnect on logout to true; changes to preference settings require sudo to obtain elevated privileges.

Although some of these controls and preferences are exposed to the user, and some are accessible in other tools, this airport tool could well come in handy, when you know what you’re doing.

(Thanks to @indi303 for drawing attention to this tool.)

Check compatibility

You can upgrade to macOS High Sierra from OS X Mountain Lion or later on any of the following Mac models. Your Mac also needs at least 2GB of memory and 14.3GB of available storage space.

MacBook introduced in late 2009 or later
MacBook Air introduced in late 2010 or later
MacBook Pro introduced in mid 2010 or later
Mac mini introduced in mid 2010 or later
iMac introduced in late 2009 or later
Mac Pro introduced in mid 2010 or later

To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu . If your Mac isn't compatible with macOS High Sierra, the installer will let you know.

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Make a backup

Before installing any upgrade, it’s a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Learn how to back up your Mac.

Get connected

It takes time to download and install macOS, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.

Download macOS High Sierra

For the strongest security and latest features, find out whether you can upgrade to macOS Catalina, the latest version of the Mac operating system.

If you still need macOS High Sierra, use this App Store link: Get macOS High Sierra.

Begin installation

Airport Utility For Mac Os High Sierra

After downloading, the installer opens automatically.

Click Continue and follow the onscreen instructions. You might find it easiest to begin installation in the evening so that it can complete overnight, if needed.

Download os sierra for mac

Airport Utility For Mac Os High Sierra 10 13 6 Free Download

If the installer asks for permission to install a helper tool, enter the administrator name and password that you use to log in to your Mac, then click Add Helper.

Allow installation to complete

Airport Utility For Macos High Sierra

Please allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs both macOS and related updates to your Mac firmware.

Learn more

Mac Os High Sierra Update

  • If you have hardware or software that isn't compatible with High Sierra, you might be able to install an earlier macOS, such as Sierra or El Capitan.
  • macOS High Sierra won't install on top of a later version of macOS, but you can erase your disk first or install on another disk.
  • You can use macOS Recovery to reinstall macOS.