disable wifi log

cd /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources

Then figure out which log settings are currently enabled by invoking:

$ sudo ./airport debug
DriverWPA

In this case only the DriverWPA setting is active. To disable that you just need to prefix it with a dash sign: $ sudo ./airport debug -DriverWPA

Last but not least, double check and confirm that the log setting is not active anymore: sudo ./airport debug

turn all off

/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport debug -AllUserland -AllDriver -AllVendor