Notification Center: Change banner’s display time

By default all banners from the Notification Center stays 5 seconds on your screen. You can adjust how long Notification Center banners are shown before they disappear. To do this use the following command in OS X Terminal:

defaults write bannerTime SECONDS

Replace SECONDS with the number of seconds you wish the banner to display. Restart OS X before the changes take effect.

Restore the default setting:

defaults delete bannerTime


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