Redhat or Fedora Core(红帽系列):

/var/log/secure

Mandrake, FreeBSD or OpenBSD:

/var/log/auth.log

SuSE:

/var/log/messages

Mac OS X (v10.4以后):

/private/var/log/asl.log

Mac OS X (v10.3以前):

/private/var/log/system.log

Debian(Debian系列,包含ubuntu等):

/var/log/auth.log

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