Hi All,
I just find a test user is logging on my server, but the TTY and FROM are :0 :0, what does that mean, and I find lots of processes owned by test user, check this out below:
w:
Code:
10:14:54 up 17:28, 2 users, load average: 1.48, 0.77, 0.50
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
test :0 :0 二16 ?xdm? 8:10m 0.15s init --user
who:
Code:
test :0 2017-03-07 16:47 (:0)
processes:
Code:
test 1882 0.0 0.0 396464 9048 ? Sl 3月07 0:00 /usr/bin/gnome-keyring-daemon --daemonize --login
test 1884 0.0 0.0 40332 4512 ? Ss 3月07 0:00 init --user
test 1986 0.0 0.0 40028 3380 ? Ss 3月07 0:01 dbus-daemon --fork --session --address=unix:abstract=/tmp/dbus-s5DZ7fS1rz
test 1997 0.0 0.0 22304 2572 ? Ss 3月07 0:00 upstart-event-bridge
test 2003 0.0 0.0 78200 8132 ? Ss 3月07 0:00 /usr/lib/x86_64-linux-gnu/hud/window-stack-bridge
test 2016 0.0 0.0 22312 204 ? S 3月07 0:00 upstart-dbus-bridge --daemon --session --user --bus-name session
test 2019 0.0 0.0 30788 276 ? S 3月07 0:00 upstart-file-bridge --daemon --user
test 2020 0.0 0.0 22312 208 ? S 3月07 0:00 upstart-dbus-bridge --daemon --system --user --bus-name system
test 2023 0.0 0.0 376348 10112 ? Ssl 3月07 0:00 /usr/bin/ibus-daemon --daemonize --xim
test 2048 0.0 0.0 822976 30280 ? Ssl 3月07 0:00 /usr/lib/unity-settings-daemon/unity-settings-daemon
test 2052 0.0 0.0 645156 31680 ? Ssl 3月07 0:00 /usr/lib/x86_64-linux-gnu/hud/hud-service
test 2056 0.0 0.0 196648 5824 ? Sl 3月07 0:00 /usr/lib/gvfs/gvfsd
test 2060 0.0 0.0 360432 9180 ? Sl 3月07 0:00 /usr/lib/gvfs/gvfsd-fuse /run/user/1000/gvfs -f -o big_writes
test 2063 0.0 0.0 295668 8228 ? Sl 3月07 0:00 /usr/lib/ibus/ibus-dconf
test 2069 0.0 0.0 367684 11944 ? Ssl 3月07 0:00 /usr/lib/at-spi2-core/at-spi-bus-launcher --launch-immediately
test 2070 0.0 0.0 584756 21824 ? Ssl 3月07 0:00 gnome-session --session=ubuntu
test 2076 0.0 0.0 487944 25556 ? Sl 3月07 0:00 /usr/lib/ibus/ibus-ui-gtk3
test 2077 0.0 0.0 39252 3520 ? S 3月07 0:00 /bin/dbus-daemon --config-file=/etc/at-spi2/accessibility.conf --nofork --print-address 3
test 2080 0.0 0.0 124916 4840 ? Sl 3月07 0:00 /usr/lib/at-spi2-core/at-spi2-registryd --use-gnome-session
test 2087 0.0 0.0 396384 17680 ? Sl 3月07 0:00 /usr/lib/ibus/ibus-x11 --kill-daemon
test 2107 0.0 0.0 293912 7192 ? S<l 3月07 0:00 /usr/bin/pulseaudio --start --log-target=syslog
test 2111 0.0 0.0 219948 7860 ? Sl 3月07 0:00 /usr/lib/ibus/ibus-engine-simple
test 2112 0.0 0.0 503052 26640 ? Ssl 3月07 0:02 /usr/lib/unity/unity-panel-service
test 2116 0.0 0.0 178180 4660 ? Sl 3月07 0:00 /usr/lib/dconf/dconf-service
test 2130 0.0 0.0 557804 22744 ? Sl 3月07 0:00 /usr/lib/x86_64-linux-gnu/bamf/bamfdaemon
test 2163 0.0 0.0 595564 25208 ? Sl 3月07 0:00 /usr/lib/x86_64-linux-gnu/indicator-keyboard-service --use-gtk
test 2170 0.0 0.0 365564 8056 ? Ssl 3月07 0:00 /usr/lib/x86_64-linux-gnu/indicator-messages/indicator-messages-service
test 2171 0.0 0.0 293744 7716 ? Ssl 3月07 0:00 /usr/lib/x86_64-linux-gnu/indicator-bluetooth/indicator-bluetooth-service
test 2173 0.0 0.0 295644 7980 ? Ssl 3月07 0:00 /usr/lib/x86_64-linux-gnu/indicator-power/indicator-power-service
test 2176 0.0 0.0 1164760 19424 ? Ssl 3月07 0:00 /usr/lib/x86_64-linux-gnu/indicator-datetime/indicator-datetime-service
test 2181 0.0 0.0 495712 11572 ? Ssl 3月07 0:00 /usr/lib/x86_64-linux-gnu/indicator-sound/indicator-sound-service
test 2185 0.0 0.0 456064 23016 ? Ssl 3月07 0:00 /usr/lib/x86_64-linux-gnu/indicator-printers/indicator-printers-service
test 2190 0.0 0.0 349876 18976 ? Sl 3月07 0:00 /usr/lib/x86_64-linux-gnu/notify-osd
test 2193 0.0 0.0 644248 10424 ? Ssl 3月07 0:00 /usr/lib/x86_64-linux-gnu/indicator-session/indicator-session-service
test 2194 0.0 0.0 286756 8316 ? Ssl 3月07 0:00 /usr/lib/x86_64-linux-gnu/indicator-application/indicator-application-service
test 2217 0.0 0.0 975956 20128 ? Sl 3月07 0:00 /usr/lib/evolution/evolution-source-registry
test 2241 14.4 0.3 1861908 236920 ? Sl 3月07 152:24 compiz
test 2251 0.0 0.0 468664 26456 ? Sl 3月07 0:00 nm-applet
test 2253 0.0 0.0 341240 18456 ? Sl 3月07 0:00 /usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1
test 2256 0.0 0.0 1096232 52016 ? Sl 3月07 0:00 /usr/lib/evolution/evolution-calendar-factory
test 2257 0.0 0.0 890568 42816 ? Sl 3月07 0:00 nautilus -n
test 2261 0.0 0.0 410656 17464 ? Sl 3月07 0:00 /usr/lib/unity-settings-daemon/unity-fallback-mount-helper
test 2275 0.0 0.0 311440 9368 ? Sl 3月07 0:00 /usr/lib/gvfs/gvfs-udisks2-volume-monitor
test 2278 0.0 0.0 58032 6312 ? S 3月07 0:00 /usr/lib/x86_64-linux-gnu/gconf/gconfd-2
test 2309 0.0 0.0 212448 6120 ? Sl 3月07 0:00 /usr/lib/gvfs/gvfs-gphoto2-volume-monitor
test 2313 0.0 0.0 285972 6420 ? Sl 3月07 0:00 /usr/lib/gvfs/gvfs-afc-volume-monitor
test 2318 0.0 0.0 200284 5600 ? Sl 3月07 0:00 /usr/lib/gvfs/gvfs-mtp-volume-monitor
test 2325 0.0 0.0 447928 10412 ? Sl 3月07 0:00 /usr/lib/gvfs/gvfsd-trash --spawner :1.5 /org/gtk/gvfs/exec_spaw/0
test 2341 0.0 0.0 270384 4940 ? Sl 3月07 0:00 /usr/lib/gvfs/gvfsd-burn --spawner :1.5 /org/gtk/gvfs/exec_spaw/1
test 2384 0.0 0.0 613816 25652 ? Sl 3月07 0:00 /usr/lib/x86_64-linux-gnu/unity-scope-home/unity-scope-home
test 2395 0.0 0.0 600140 25672 ? Sl 3月07 0:01 /usr/bin/unity-scope-loader applications/applications.scope applications/scopes.scope commands.scope
test 2397 0.0 0.0 626868 17172 ? Sl 3月07 0:00 /usr/lib/x86_64-linux-gnu/unity-lens-files/unity-files-daemon
test 2401 0.0 0.0 350244 14580 ? Sl 3月07 0:00 /usr/lib/x86_64-linux-gnu/unity-lens-music/unity-music-daemon
test 2410 0.0 0.0 363748 8308 ? Sl 3月07 0:00 /usr/bin/zeitgeist-daemon
test 2419 0.0 0.0 330020 15160 ? Sl 3月07 0:00 /usr/lib/x86_64-linux-gnu/zeitgeist-fts
test 2421 0.0 0.0 528116 16960 ? Sl 3月07 0:00 zeitgeist-datahub
