System/Kernel
user@forge:~$ file /bin/bash ; uname -a ; cat /etc/*release
/bin/bash: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=a6cb40078351e05121d46daa768e271846d5cc54, for GNU/Linux 3.2.0, stripped
linux forge 5.4.0-81-generic #91-ubuntu smp thu jul 15 19:09:17 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=20.04
DISTRIB_CODENAME=focal
DISTRIB_DESCRIPTION="Ubuntu 20.04.3 LTS"
NAME="Ubuntu"
VERSION="20.04.3 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.3 LTS"
VERSION_ID="20.04"
home_url="https://www.ubuntu.com/"
support_url="https://help.ubuntu.com/"
bug_report_url="https://bugs.launchpad.net/ubuntu/"
privacy_policy_url="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focalUbuntu 20.04.3 LTS (Focal Fossa)
5.4.0-81-generic
x86_64
Networks
user@forge:~$ netstat -antup4
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN -
tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN -
tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN -
tcp 0 360 10.10.11.111:22 10.10.14.7:35408 ESTABLISHED -
udp 0 0 10.10.11.111:53767 1.1.1.1:53 ESTABLISHED -
udp 0 0 127.0.0.1:60036 127.0.0.53:53 ESTABLISHED -
udp 0 0 10.10.11.111:49057 1.1.1.1:53 ESTABLISHED -
udp 0 0 127.0.0.53:53 0.0.0.0:* - 0.0.0.0:21
127.0.0.53:53
Users & Groups
user@forge:~$ cat /etc/passwd ; ll /home
root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin
bin:x:2:2:bin:/bin:/usr/sbin/nologin
sys:x:3:3:sys:/dev:/usr/sbin/nologin
sync:x:4:65534:sync:/bin:/bin/sync
games:x:5:60:games:/usr/games:/usr/sbin/nologin
man:x:6:12:man:/var/cache/man:/usr/sbin/nologin
lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin
mail:x:8:8:mail:/var/mail:/usr/sbin/nologin
news:x:9:9:news:/var/spool/news:/usr/sbin/nologin
uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin
proxy:x:13:13:proxy:/bin:/usr/sbin/nologin
www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin
backup:x:34:34:backup:/var/backups:/usr/sbin/nologin
list:x:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin
irc:x:39:39:ircd:/var/run/ircd:/usr/sbin/nologin
gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/usr/sbin/nologin
nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin
systemd-network:x:100:102:systemd Network Management,,,:/run/systemd:/usr/sbin/nologin
systemd-resolve:x:101:103:systemd Resolver,,,:/run/systemd:/usr/sbin/nologin
systemd-timesync:x:102:104:systemd Time Synchronization,,,:/run/systemd:/usr/sbin/nologin
messagebus:x:103:106::/nonexistent:/usr/sbin/nologin
syslog:x:104:110::/home/syslog:/usr/sbin/nologin
_apt:x:105:65534::/nonexistent:/usr/sbin/nologin
tss:x:106:111:TPM software stack,,,:/var/lib/tpm:/bin/false
uuidd:x:107:112::/run/uuidd:/usr/sbin/nologin
tcpdump:x:108:113::/nonexistent:/usr/sbin/nologin
landscape:x:109:115::/var/lib/landscape:/usr/sbin/nologin
pollinate:x:110:1::/var/cache/pollinate:/bin/false
sshd:x:111:65534::/run/sshd:/usr/sbin/nologin
systemd-coredump:x:999:999:systemd Core Dumper:/:/usr/sbin/nologin
user:x:1000:1000:NoobHacker:/home/user:/bin/bash
lxd:x:998:100::/var/snap/lxd/common/lxd:/bin/false
usbmux:x:112:46:usbmux daemon,,,:/var/lib/usbmux:/usr/sbin/nologin
ftp:x:113:118:ftp daemon,,,:/srv/ftp:/usr/sbin/nologin
total 12
drwxr-xr-x 3 root root 4096 Aug 4 2021 ./
drwxr-xr-x 20 root root 4096 Aug 4 2021 ../
drwxr-xr-x 5 user user 4096 Aug 4 2021 user/user@forge:~$ cut -d: -f1 /etc/passwd | xargs -n1 id
uid=0(root) gid=0(root) groups=0(root)
uid=1(daemon) gid=1(daemon) groups=1(daemon)
uid=2(bin) gid=2(bin) groups=2(bin)
uid=3(sys) gid=3(sys) groups=3(sys)
uid=4(sync) gid=65534(nogroup) groups=65534(nogroup)
uid=5(games) gid=60(games) groups=60(games)
uid=6(man) gid=12(man) groups=12(man)
uid=7(lp) gid=7(lp) groups=7(lp)
uid=8(mail) gid=8(mail) groups=8(mail)
uid=9(news) gid=9(news) groups=9(news)
uid=10(uucp) gid=10(uucp) groups=10(uucp)
uid=13(proxy) gid=13(proxy) groups=13(proxy)
uid=33(www-data) gid=33(www-data) groups=33(www-data)
uid=34(backup) gid=34(backup) groups=34(backup)
uid=38(list) gid=38(list) groups=38(list)
uid=39(irc) gid=39(irc) groups=39(irc)
uid=41(gnats) gid=41(gnats) groups=41(gnats)
uid=65534(nobody) gid=65534(nogroup) groups=65534(nogroup)
uid=100(systemd-network) gid=102(systemd-network) groups=102(systemd-network)
uid=101(systemd-resolve) gid=103(systemd-resolve) groups=103(systemd-resolve)
uid=102(systemd-timesync) gid=104(systemd-timesync) groups=104(systemd-timesync)
uid=103(messagebus) gid=106(messagebus) groups=106(messagebus)
uid=104(syslog) gid=110(syslog) groups=110(syslog),4(adm),5(tty)
uid=105(_apt) gid=65534(nogroup) groups=65534(nogroup)
uid=106(tss) gid=111(tss) groups=111(tss)
uid=107(uuidd) gid=112(uuidd) groups=112(uuidd)
uid=108(tcpdump) gid=113(tcpdump) groups=113(tcpdump)
uid=109(landscape) gid=115(landscape) groups=115(landscape)
uid=110(pollinate) gid=1(daemon) groups=1(daemon)
uid=111(sshd) gid=65534(nogroup) groups=65534(nogroup)
uid=999(systemd-coredump) gid=999(systemd-coredump) groups=999(systemd-coredump)
uid=1000(user) gid=1000(user) groups=1000(user)
uid=998(lxd) gid=100(users) groups=100(users)
uid=112(usbmux) gid=46(plugdev) groups=46(plugdev)
uid=113(ftp) gid=118(ftp) groups=118(ftp)SUIDs
user@forge:~$ find / -perm -04000 -ls -type f 2>/dev/null
39833 52 -rwsr-xr-- 1 root messagebus 51344 Jun 11 2020 /usr/lib/dbus-1.0/dbus-daemon-launch-helper
3728 464 -rwsr-xr-x 1 root root 473576 Jul 23 2021 /usr/lib/openssh/ssh-keysign
7667 24 -rwsr-xr-x 1 root root 22840 May 26 2021 /usr/lib/policykit-1/polkit-agent-helper-1
39840 16 -rwsr-xr-x 1 root root 14488 Jul 8 2019 /usr/lib/eject/dmcrypt-get-device
33435 128 -rwsr-xr-x 1 root root 130408 Mar 26 2021 /usr/lib/snapd/snap-confine
4457 84 -rwsr-xr-x 1 root root 85064 Jul 14 2021 /usr/bin/chfn
7664 32 -rwsr-xr-x 1 root root 31032 May 26 2021 /usr/bin/pkexec
4460 88 -rwsr-xr-x 1 root root 88464 Jul 14 2021 /usr/bin/gpasswd
39284 56 -rwsr-xr-x 1 root root 55528 Jul 21 2020 /usr/bin/mount
39556 68 -rwsr-xr-x 1 root root 67816 Jul 21 2020 /usr/bin/su
39557 164 -rwsr-xr-x 1 root root 166056 Jan 19 2021 /usr/bin/sudo
4458 52 -rwsr-xr-x 1 root root 53040 Jul 14 2021 /usr/bin/chsh
4461 68 -rwsr-xr-x 1 root root 68208 Jul 14 2021 /usr/bin/passwd
38953 56 -rwsr-sr-x 1 daemon daemon 55560 Nov 12 2018 /usr/bin/at
39626 40 -rwsr-xr-x 1 root root 39144 Jul 21 2020 /usr/bin/umount
39132 40 -rwsr-xr-x 1 root root 39144 Mar 7 2020 /usr/bin/fusermount
4760 44 -rwsr-xr-x 1 root root 44784 Jul 14 2021 /usr/bin/newgrp
56 43 -rwsr-xr-x 1 root root 43088 Sep 16 2020 /snap/core18/2066/bin/mount
65 63 -rwsr-xr-x 1 root root 64424 Jun 28 2019 /snap/core18/2066/bin/ping
81 44 -rwsr-xr-x 1 root root 44664 Mar 22 2019 /snap/core18/2066/bin/su
99 27 -rwsr-xr-x 1 root root 26696 Sep 16 2020 /snap/core18/2066/bin/umount
1708 75 -rwsr-xr-x 1 root root 76496 Mar 22 2019 /snap/core18/2066/usr/bin/chfn
1710 44 -rwsr-xr-x 1 root root 44528 Mar 22 2019 /snap/core18/2066/usr/bin/chsh
1763 75 -rwsr-xr-x 1 root root 75824 Mar 22 2019 /snap/core18/2066/usr/bin/gpasswd
1827 40 -rwsr-xr-x 1 root root 40344 Mar 22 2019 /snap/core18/2066/usr/bin/newgrp
1840 59 -rwsr-xr-x 1 root root 59640 Mar 22 2019 /snap/core18/2066/usr/bin/passwd
1931 146 -rwsr-xr-x 1 root root 149080 Jan 19 2021 /snap/core18/2066/usr/bin/sudo
2018 42 -rwsr-xr-- 1 root systemd-resolve 42992 Jun 11 2020 /snap/core18/2066/usr/lib/dbus-1.0/dbus-daemon-launch-helper
2328 427 -rwsr-xr-x 1 root root 436552 Mar 4 2019 /snap/core18/2066/usr/lib/openssh/ssh-keysign
56 43 -rwsr-xr-x 1 root root 43088 Sep 16 2020 /snap/core18/2074/bin/mount
65 63 -rwsr-xr-x 1 root root 64424 Jun 28 2019 /snap/core18/2074/bin/ping
81 44 -rwsr-xr-x 1 root root 44664 Mar 22 2019 /snap/core18/2074/bin/su
99 27 -rwsr-xr-x 1 root root 26696 Sep 16 2020 /snap/core18/2074/bin/umount
1710 75 -rwsr-xr-x 1 root root 76496 Mar 22 2019 /snap/core18/2074/usr/bin/chfn
1712 44 -rwsr-xr-x 1 root root 44528 Mar 22 2019 /snap/core18/2074/usr/bin/chsh
1765 75 -rwsr-xr-x 1 root root 75824 Mar 22 2019 /snap/core18/2074/usr/bin/gpasswd
1829 40 -rwsr-xr-x 1 root root 40344 Mar 22 2019 /snap/core18/2074/usr/bin/newgrp
1842 59 -rwsr-xr-x 1 root root 59640 Mar 22 2019 /snap/core18/2074/usr/bin/passwd
1933 146 -rwsr-xr-x 1 root root 149080 Jan 19 2021 /snap/core18/2074/usr/bin/sudo
2020 42 -rwsr-xr-- 1 root systemd-resolve 42992 Jun 11 2020 /snap/core18/2074/usr/lib/dbus-1.0/dbus-daemon-launch-helper
2330 427 -rwsr-xr-x 1 root root 436552 Mar 4 2019 /snap/core18/2074/usr/lib/openssh/ssh-keysign
128 109 -rwsr-xr-x 1 root root 111080 May 19 2021 /snap/snapd/12057/usr/lib/snapd/snap-confine
128 109 -rwsr-xr-x 1 root root 111080 Jul 14 2021 /snap/snapd/12704/usr/lib/snapd/snap-confineSGIDs
user@forge:~$ find / -perm -02000 -ls -type f 2>/dev/null
381 0 drwxr-sr-x 2 root systemd-journal 40 apr 12 16:31 /run/log/journal
3495 16 -rwxr-sr-x 1 root utmp 14648 Sep 30 2019 /usr/lib/x86_64-linux-gnu/utempter/utempter
4459 32 -rwxr-sr-x 1 root shadow 31312 Jul 14 2021 /usr/bin/expiry
38966 16 -rwxr-sr-x 1 root tty 14488 Mar 30 2020 /usr/bin/bsd-write
4453 84 -rwxr-sr-x 1 root shadow 84512 Jul 14 2021 /usr/bin/chage
39668 36 -rwxr-sr-x 1 root tty 35048 Jul 21 2020 /usr/bin/wall
38953 56 -rwsr-sr-x 1 daemon daemon 55560 Nov 12 2018 /usr/bin/at
3722 344 -rwxr-sr-x 1 root ssh 350504 Jul 23 2021 /usr/bin/ssh-agent
39051 44 -rwxr-sr-x 1 root crontab 43720 Feb 13 2020 /usr/bin/crontab
1647 44 -rwxr-sr-x 1 root shadow 43160 Apr 8 2021 /usr/sbin/unix_chkpwd
1538 44 -rwxr-sr-x 1 root shadow 43168 Apr 8 2021 /usr/sbin/pam_extrausers_chkpwd
11224 4 drwxrwsr-x 2 root staff 4096 Apr 15 2020 /var/local
140436 4 drwxrwsr-x 2 root mail 4096 Feb 1 2021 /var/mail
262891 4 drwxr-sr-x 3 root systemd-journal 4096 May 19 2021 /var/log/journal
148248 4 drwxr-sr-x 2 root systemd-journal 4096 apr 12 21:20 /var/log/journal/9be5366145d24b1594e42df6e94607c0
1637 34 -rwxr-sr-x 1 root shadow 34816 Jul 21 2020 /snap/core18/2066/sbin/pam_extrausers_chkpwd
1666 34 -rwxr-sr-x 1 root shadow 34816 Jul 21 2020 /snap/core18/2066/sbin/unix_chkpwd
1703 71 -rwxr-sr-x 1 root shadow 71816 Mar 22 2019 /snap/core18/2066/usr/bin/chage
1748 23 -rwxr-sr-x 1 root shadow 22808 Mar 22 2019 /snap/core18/2066/usr/bin/expiry
1924 355 -rwxr-sr-x 1 root crontab 362640 Mar 4 2019 /snap/core18/2066/usr/bin/ssh-agent
1988 31 -rwxr-sr-x 1 root tty 30800 Sep 16 2020 /snap/core18/2066/usr/bin/wall
10786 0 drwxrwsr-x 2 root mail 3 May 7 2021 /snap/core18/2066/var/mail
1639 34 -rwxr-sr-x 1 root shadow 34816 Apr 8 2021 /snap/core18/2074/sbin/pam_extrausers_chkpwd
1668 34 -rwxr-sr-x 1 root shadow 34816 Apr 8 2021 /snap/core18/2074/sbin/unix_chkpwd
1705 71 -rwxr-sr-x 1 root shadow 71816 Mar 22 2019 /snap/core18/2074/usr/bin/chage
1750 23 -rwxr-sr-x 1 root shadow 22808 Mar 22 2019 /snap/core18/2074/usr/bin/expiry
1926 355 -rwxr-sr-x 1 root crontab 362640 Mar 4 2019 /snap/core18/2074/usr/bin/ssh-agent
1990 31 -rwxr-sr-x 1 root tty 30800 Sep 16 2020 /snap/core18/2074/usr/bin/wall
10795 0 drwxrwsr-x 2 root mail 3 Jun 11 2021 /snap/core18/2074/var/mailProcesses
user@forge:~$ ps -auxwww
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.5 101956 11232 ? Ss 16:31 0:03 /sbin/init maybe-ubiquity
root 482 0.0 0.6 67856 13684 ? S<s 16:31 0:00 /lib/systemd/systemd-journald
root 510 0.0 0.2 21388 5564 ? Ss 16:31 0:00 /lib/systemd/systemd-udevd
root 684 0.0 0.8 280136 17940 ? SLsl 16:31 0:02 /sbin/multipathd -d -s
root 730 0.0 0.0 2488 584 ? S 16:31 0:00 bpfilter_umh
root 751 0.0 0.5 47540 10564 ? Ss 16:31 0:00 /usr/bin/VGAuthService
root 754 0.1 0.3 237124 7760 ? Ssl 16:31 0:32 /usr/bin/vmtoolsd
root 861 0.0 0.3 235672 7392 ? Ssl 16:31 0:00 /usr/lib/accountsservice/accounts-daemon
root 873 0.0 0.1 81960 3752 ? Ssl 16:31 0:01 /usr/sbin/irqbalance --foreground
root 875 0.0 0.8 29076 17944 ? Ss 16:31 0:00 /usr/bin/python3 /usr/bin/networkd-dispatcher --run-startup-triggers
root 877 0.0 1.4 852488 28316 ? Ssl 16:31 0:04 /usr/lib/snapd/snapd
root 878 0.0 0.3 16668 7976 ? Ss 16:31 0:00 /lib/systemd/systemd-logind
root 879 0.0 0.5 392560 11988 ? Ssl 16:31 0:00 /usr/lib/udisks2/udisksd
root 926 0.0 0.3 232716 6800 ? Ssl 16:31 0:00 /usr/lib/policykit-1/polkitd --no-debug
root 947 0.0 0.1 6812 3044 ? Ss 16:31 0:00 /usr/sbin/cron -f
daemon 954 0.0 0.1 3792 2240 ? Ss 16:31 0:00 /usr/sbin/atd -f
root 955 0.0 0.1 6808 3204 ? Ss 16:31 0:00 /usr/sbin/vsftpd /etc/vsftpd.conf
root 968 0.0 0.0 5828 1848 tty1 Ss+ 16:31 0:00 /sbin/agetty -o -p -- \u --noclear tty1 linux
root 979 0.0 0.3 12176 7268 ? Ss 16:31 0:00 sshd: /usr/sbin/sshd -D [listener] 0 of 10-100 startups
root 1115 0.0 0.2 14052 5500 ? Ss 16:32 0:01 /usr/sbin/apache2 -k start
user 1131 2.2 3.5 1263744 71600 ? Sl 16:32 8:59 /usr/sbin/apache2 -k start
root 1610 0.0 0.4 241220 8920 ? Ssl 18:52 0:00 /usr/lib/upower/upowerd
root 1900 0.0 0.4 13668 9088 ? Ss 21:19 0:00 sshd: user [priv]
user 1917 0.0 0.4 18500 9728 ? Ss 21:19 0:00 /lib/systemd/systemd --user
user 1919 0.0 0.1 103316 3364 ? S 21:19 0:00 (sd-pam)
user 2045 0.0 0.2 13676 5352 ? R 21:20 0:00 sshd: user@pts/0
user 2053 0.0 0.2 8408 5392 pts/0 Ss 21:20 0:00 -bash
user 2373 0.0 0.1 9084 3520 pts/0 R+ 23:03 0:00 ps -auxwww/usr/lib/udisks2/udisksd
/usr/lib/policykit-1/polkitd --no-debug
/usr/sbin/cron -f
Cron & Systemd
user@forge:~$ crontab -l ; cat /etc/crontab ; systemctl list-timers
no crontab for user
# /etc/crontab: system-wide crontab
# Unlike any other crontab you don't have to run the `crontab'
# command to install the new version when you edit this file
# and files in /etc/cron.d. These files also have username fields,
# that none of the other crontabs do.
SHELL=/bin/sh
path=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
# example of job definition:
# .---------------- minute (0 - 59)
# | .------------- hour (0 - 23)
# | | .---------- day of month (1 - 31)
# | | | .------- month (1 - 12) OR jan,feb,mar,apr ...
# | | | | .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat
# | | | | |
# * * * * * user-name command to be executed
17 * * * * root cd / && run-parts --report /etc/cron.hourly
25 6 * * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily )
47 6 * * 7 root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly )
52 6 1 * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly )
#
NEXT LEFT LAST PASSED UNIT >
thu 2023-04-13 00:00:00 UTC 1h 24min left Wed 2023-04-12 16:31:51 UTC 6h ago logrotate.timer >
thu 2023-04-13 00:00:00 UTC 1h 24min left Wed 2023-04-12 16:31:51 UTC 6h ago man-db.timer >
thu 2023-04-13 01:37:02 UTC 3h 1min left Fri 2021-08-20 02:15:33 UTC 1 years 7 months ago motd-news.timer >
thu 2023-04-13 02:55:03 UTC 4h 19min left Thu 2021-08-19 22:10:15 UTC 1 years 7 months ago apt-daily.timer >
thu 2023-04-13 03:31:45 UTC 4h 56min left Wed 2023-04-12 16:43:06 UTC 5h 52min ago ua-messaging.timer>
thu 2023-04-13 06:04:06 UTC 7h left Wed 2023-04-12 16:51:56 UTC 5h 43min ago apt-daily-upgrade.>
thu 2023-04-13 09:24:49 UTC 10h left Wed 2023-04-12 18:52:54 UTC 3h 42min ago fwupd-refresh.time>
thu 2023-04-13 16:46:46 UTC 18h left Wed 2023-04-12 16:46:46 UTC 5h 48min ago systemd-tmpfiles-c>
sun 2023-04-16 03:10:21 UTC 3 days left Wed 2023-04-12 16:31:54 UTC 6h ago e2scrub_all.timer >
mon 2023-04-17 00:00:00 UTC 4 days left Wed 2023-04-12 16:31:51 UTC 6h ago fstrim.timer >
10 timers listed.
Pass --all to see loaded but inactive timers, too.
lines 1-14/14 (END)Sudo Version
user@forge:~$ sudo -V
Sudo version 1.8.31
Sudoers policy plugin version 1.8.31
Sudoers file grammar version 46
Sudoers I/O plugin version 1.8.31Sudo version 1.8.31
Glibc Version
user@forge:~$ ldd --version
ldd (Ubuntu GLIBC 2.31-0ubuntu9.2) 2.31
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Roland McGrath and Ulrich Drepper.ldd (Ubuntu GLIBC 2.31-0ubuntu9.2) 2.31