-default: This configures the man package with default settings. sed s/AWK=/"AWK=\/usr\/bin\/mawk"/ /usr/sbin/makewhatis > makewhatis-new: This modifies /usr/sbin/makewhatis's AWK variable and fills in the location of the mawk program. chmod 755 /usr/sbin/makewhatis: This makes the makewhatis script executable again.