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These functions use the GETPWENT(3) and GETGRENT(3) system calls to query users and groups respectively.
group_ids()user_ids()
user_ids()
They return their results in a data.frame. On windows both functions return an empty data.frame because windows does not have user or group ids.
data.frame
# NOT RUN { # list all groups group_ids() # list all users user_ids() # }
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