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Old 03-07-2017, 08:24 PM   #1
hilou
Member
 
Registered: May 2013
Posts: 93

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weird w/who output


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
 
Old 03-08-2017, 12:42 AM   #2
JJJCR
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Registered: Apr 2010
Posts: 1,861

Rep: Reputation: 338Reputation: 338Reputation: 338Reputation: 338
have you tried typing: whoami

Most probably it will be "test"

Or try using: ps -u test
 
Old 03-08-2017, 12:52 AM   #3
Jjanel
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Registered: Jun 2016
Distribution: any&all, in VBox; Ol'UnixCLI; NO GUI resources
Posts: 999
Blog Entries: 12

Rep: Reputation: 363Reputation: 363Reputation: 363Reputation: 363
Distro? (History?) MIGHT that terminal be 'messed-up'? reset;clear
Valid user [YOU? vs. hacker!]? last|head; grep -w test /etc/passwd; ls -l /etc/passwd; dmesg|tail
GUI/ssh? Is your IP address 'private' 192.168.. (or 'public'? [doNOT post it!])

p.s. Can a guru toss me a link explaining "init --user"? reparented? Upstart?

Last edited by Jjanel; 03-08-2017 at 01:23 AM.
 
Old 03-08-2017, 11:54 AM   #4
Habitual
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Registered: Jan 2011
Location: Abingdon, VA
Distribution: Catalina
Posts: 9,374
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Code:
w -s
may yield a clue?
 
  


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