［APUE2nd学习笔记］Ch6. System Data Files and Information

[trrrr]

/etc/passwd, finger(1)
getpwuid, getpwnam
getpwent, setpwent, endpwent

/etc/shadow
getspnam
getspent, setspent, endspent

/etc/group
getgrgid, getgrnam
getgrent, setgrent, endgrent

supplementary group ID: required feature of POSIX.1

/etc/hosts, /etc/networks, /etc/protocols, /etc/services (p170)

/var/run/utmp: current login users
/var/log/wtmp: all logins and logouts
who(1), last(1)

uname, gethostname, hostname(1)

time(second), gettimeofday(microsecond)
gmtime, localtime, mktime, asctime, ctime, strftime (p174)

[joyself]

老兄， 这个算得上学习笔记么？