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To see all available qualifiers, see our documentation.
Unsuccess login attempts
# last -f /var/log/wtmp
or
# utmpdump /var/log/wtmp
Archive version on unsuccess login attempts
# last -f /var/log/btmp
# utmpdump /var/log/btmp
Still logged in
# last -f /var/run/utmp
# who
# utmpdump /var/run/utmp