「The interfaces in file <utmp.h> are all DEPRECATED and are only provided for compatibility with previ-ous previousous releases of Mac OS X.」utmpx.h は10.5から
「Numerous customers have complained that after using Intelius services, their credit or debit cards are, without authorization, automatically charged each month for services they had not requested under various merchant names」
sips(1) Mac OS X Manual Page
Intelius - Wikipedia
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