System/Kernel
notch@blocky:~$ file /bin/bash ; uname -a ; cat /etc/*release
/bin/bash: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.32, BuildID[sha1]=04eca96c5bf3e9a300952a29ef3218f00487d37b, stripped
linux blocky 4.4.0-62-generic #83-ubuntu smp wed jan 18 14:10:15 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.2 LTS"
NAME="Ubuntu"
VERSION="16.04.2 LTS (Xenial Xerus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 16.04.2 LTS"
VERSION_ID="16.04"
home_url="http://www.ubuntu.com/"
support_url="http://help.ubuntu.com/"
bug_report_url="http://bugs.launchpad.net/ubuntu/"
VERSION_CODENAME=xenial
UBUNTU_CODENAME=xenialUbuntu 16.04.2 LTS (Xenial Xerus)
4.4.0-62-generic
x86_64
Networks
notch@Blocky:~$ arp -a
? (10.10.10.2) at 00:50:56:b9:9d:31 [ether] on ens160
notch@Blocky:~$ 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 0 127.0.0.1:3306 0.0.0.0:* LISTEN -
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN -
tcp 0 604 10.10.10.37:22 10.10.14.17:44090 ESTABLISHED - 127.0.0.1:3306
Users & Groups
notch@blocky:~$ 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-timesync:x:100:102:systemd Time Synchronization,,,:/run/systemd:/bin/false
systemd-network:x:101:103:systemd Network Management,,,:/run/systemd/netif:/bin/false
systemd-resolve:x:102:104:systemd Resolver,,,:/run/systemd/resolve:/bin/false
systemd-bus-proxy:x:103:105:systemd Bus Proxy,,,:/run/systemd:/bin/false
syslog:x:104:108::/home/syslog:/bin/false
_apt:x:105:65534::/nonexistent:/bin/false
lxd:x:106:65534::/var/lib/lxd/:/bin/false
messagebus:x:107:111::/var/run/dbus:/bin/false
uuidd:x:108:112::/run/uuidd:/bin/false
dnsmasq:x:109:65534:dnsmasq,,,:/var/lib/misc:/bin/false
notch:x:1000:1000:notch,,,:/home/notch:/bin/bash
mysql:x:110:117:MySQL Server,,,:/nonexistent:/bin/false
proftpd:x:111:65534::/run/proftpd:/bin/false
ftp:x:112:65534::/srv/ftp:/bin/false
sshd:x:113:65534::/var/run/sshd:/usr/sbin/nologin
total 12
drwxr-xr-x 3 root root 4096 Jul 2 2017 ./
drwxr-xr-x 23 root root 4096 Jun 2 2022 ../
drwxr-xr-x 5 notch notch 4096 Jul 8 2022 notch/notch@blocky:~$ 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-timesync) gid=102(systemd-timesync) groups=102(systemd-timesync)
uid=101(systemd-network) gid=103(systemd-network) groups=103(systemd-network)
uid=102(systemd-resolve) gid=104(systemd-resolve) groups=104(systemd-resolve)
uid=103(systemd-bus-proxy) gid=105(systemd-bus-proxy) groups=105(systemd-bus-proxy)
uid=104(syslog) gid=108(syslog) groups=108(syslog),4(adm)
uid=105(_apt) gid=65534(nogroup) groups=65534(nogroup)
uid=106(lxd) gid=65534(nogroup) groups=65534(nogroup)
uid=107(messagebus) gid=111(messagebus) groups=111(messagebus)
uid=108(uuidd) gid=112(uuidd) groups=112(uuidd)
uid=109(dnsmasq) gid=65534(nogroup) groups=65534(nogroup)
uid=1000(notch) gid=1000(notch) groups=1000(notch),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),110(lxd),115(lpadmin),116(sambashare)
uid=110(mysql) gid=117(mysql) groups=117(mysql)
uid=111(proftpd) gid=65534(nogroup) groups=65534(nogroup)
uid=112(ftp) gid=65534(nogroup) groups=65534(nogroup)
uid=113(sshd) gid=65534(nogroup) groups=65534(nogroup)uid=1000(notch) gid=1000(notch) groups=1000(notch),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),110(lxd),115(lpadmin),116(sambashare)
SUIDs
notch@Blocky:~$ find / -perm -04000 -ls -type f 2>/dev/null
8188 40 -rwsr-xr-x 1 root root 40128 May 16 2017 /bin/su
35845 32 -rwsr-xr-x 1 root root 30800 Jul 12 2016 /bin/fusermount
94 40 -rwsr-xr-x 1 root root 40152 Jun 14 2017 /bin/mount
90 44 -rwsr-xr-x 1 root root 44168 May 7 2014 /bin/ping
129 28 -rwsr-xr-x 1 root root 27608 Jun 14 2017 /bin/umount
91 44 -rwsr-xr-x 1 root root 44680 May 7 2014 /bin/ping6
35442 140 -rwsr-xr-x 1 root root 142032 Jan 28 2017 /bin/ntfs-3g
7666 52 -rwsr-xr-x 1 root root 49584 May 16 2017 /usr/bin/chfn
39042 24 -rwsr-xr-x 1 root root 23376 Jan 17 2016 /usr/bin/pkexec
8603 36 -rwsr-xr-x 1 root root 32944 May 16 2017 /usr/bin/newuidmap
6380 136 -rwsr-xr-x 1 root root 136808 May 29 2017 /usr/bin/sudo
7664 76 -rwsr-xr-x 1 root root 75304 May 16 2017 /usr/bin/gpasswd
7702 56 -rwsr-xr-x 1 root root 54256 May 16 2017 /usr/bin/passwd
38356 52 -rwsr-sr-x 1 daemon daemon 51464 Jan 14 2016 /usr/bin/at
8604 36 -rwsr-xr-x 1 root root 32944 May 16 2017 /usr/bin/newgidmap
7620 40 -rwsr-xr-x 1 root root 40432 May 16 2017 /usr/bin/chsh
8187 40 -rwsr-xr-x 1 root root 39904 May 16 2017 /usr/bin/newgrp
145448 420 -rwsr-xr-x 1 root root 428240 Mar 16 2017 /usr/lib/openssh/ssh-keysign
145434 40 -rwsr-xr-x 1 root root 38984 Jun 14 2017 /usr/lib/x86_64-linux-gnu/lxc/lxc-user-nic
137821 44 -rwsr-xr-- 1 root messagebus 42992 Jan 12 2017 /usr/lib/dbus-1.0/dbus-daemon-launch-helper
8942 204 -rwsr-xr-x 1 root root 208680 Apr 29 2017 /usr/lib/snapd/snap-confine
39026 16 -rwsr-xr-x 1 root root 14864 Jan 17 2016 /usr/lib/policykit-1/polkit-agent-helper-1
7638 12 -rwsr-xr-x 1 root root 10232 Mar 27 2017 /usr/lib/eject/dmcrypt-get-deviceSGIDs
notch@blocky:~$ find / -perm -02000 -ls -type f 2>/dev/null
15898 4 drwxrwsr-x 2 root staff 4096 Apr 12 2016 /var/local
15902 4 drwxrwsr-x 2 root mail 4096 Feb 15 2017 /var/mail
138641 4 drwxr-sr-x 2 man root 4096 Jul 16 2017 /var/cache/man
1584 36 -rwxr-sr-x 1 root shadow 35600 Mar 16 2016 /sbin/unix_chkpwd
1548 36 -rwxr-sr-x 1 root shadow 35632 Mar 16 2016 /sbin/pam_extrausers_chkpwd
41419 4 drwxrwsr-x 7 root staff 4096 Jul 2 2017 /usr/local/share/sgml
41423 4 drwxrwsr-x 2 root staff 4096 Jul 2 2017 /usr/local/share/sgml/misc
41422 4 drwxrwsr-x 2 root staff 4096 Jul 2 2017 /usr/local/share/sgml/entities
41421 4 drwxrwsr-x 2 root staff 4096 Jul 2 2017 /usr/local/share/sgml/stylesheet
41424 4 drwxrwsr-x 2 root staff 4096 Jul 2 2017 /usr/local/share/sgml/dtd
41420 4 drwxrwsr-x 2 root staff 4096 Jul 2 2017 /usr/local/share/sgml/declaration
41621 4 drwxrwsr-x 6 root staff 4096 Jul 2 2017 /usr/local/share/xml
41626 4 drwxrwsr-x 2 root staff 4096 Jul 2 2017 /usr/local/share/xml/schema
41623 4 drwxrwsr-x 2 root staff 4096 Jul 2 2017 /usr/local/share/xml/misc
41625 4 drwxrwsr-x 2 root staff 4096 Jul 2 2017 /usr/local/share/xml/entities
41624 4 drwxrwsr-x 2 root staff 4096 Jul 2 2017 /usr/local/share/xml/declaration
47372 4 drwxrwsr-x 2 root staff 4096 Jul 2 2017 /usr/local/share/fonts
4595 4 drwxrwsr-x 3 root staff 4096 Jul 2 2017 /usr/local/lib/python3.5
4596 4 drwxrwsr-x 2 root staff 4096 Feb 15 2017 /usr/local/lib/python3.5/dist-packages
38460 428 -rwxr-sr-x 1 root utmp 434216 Feb 7 2016 /usr/bin/screen
8840 352 -rwxr-sr-x 1 root ssh 358624 Mar 16 2017 /usr/bin/ssh-agent
38356 52 -rwsr-sr-x 1 daemon daemon 51464 Jan 14 2016 /usr/bin/at
1632 36 -rwxr-sr-x 1 root crontab 36080 Apr 5 2016 /usr/bin/crontab
35626 16 -rwxr-sr-x 1 root tty 14752 Mar 1 2016 /usr/bin/bsd-write
5628 28 -rwxr-sr-x 1 root tty 27368 Jun 14 2017 /usr/bin/wall
37886 40 -rwxr-sr-x 1 root mlocate 39520 Nov 18 2014 /usr/bin/mlocate
7281 64 -rwxr-sr-x 1 root shadow 62336 May 16 2017 /usr/bin/chage
7617 24 -rwxr-sr-x 1 root shadow 22768 May 16 2017 /usr/bin/expiry
141439 12 -rwxr-sr-x 1 root utmp 10232 Mar 11 2016 /usr/lib/x86_64-linux-gnu/utempter/utempter
350 0 drwxr-sr-x 3 root systemd-journal 60 sep 19 00:43 /run/log/journal
351 0 drwxr-s--- 2 root systemd-journal 80 sep 19 00:43 /run/log/journal/b927797b27465e4b27172dd35958fd55Processes
notch@Blocky:~$ ps -auxwww
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.2 37828 5688 ? Ss 00:42 0:02 /sbin/init
root 489 0.0 0.1 29628 3032 ? Ss 00:43 0:00 /lib/systemd/systemd-journald
root 537 0.0 0.0 102972 1568 ? Ss 00:43 0:00 /sbin/lvmetad -f
root 551 0.0 0.2 44784 4068 ? Ss 00:43 0:00 /lib/systemd/systemd-udevd
systemd+ 875 0.0 0.1 100328 2400 ? Ssl 00:43 0:00 /lib/systemd/systemd-timesyncd
root 1117 0.0 0.3 621800 6112 ? Ssl 00:43 0:00 /usr/bin/lxcfs /var/lib/lxcfs/
syslog 1118 0.0 0.1 256400 2968 ? Ssl 00:43 0:00 /usr/sbin/rsyslogd -n
root 1120 0.0 0.4 192264 9844 ? Ssl 00:43 0:03 /usr/bin/vmtoolsd
root 1128 0.0 0.1 28552 3064 ? Ss 00:43 0:00 /lib/systemd/systemd-logind
root 1134 0.0 0.3 275876 6152 ? Ssl 00:43 0:00 /usr/lib/accountsservice/accounts-daemon
message+ 1135 0.0 0.1 42904 3592 ? Ss 00:43 0:00 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation
root 1154 0.0 0.1 29012 2676 ? Ss 00:43 0:00 /usr/sbin/cron -f
daemon 1155 0.0 0.0 26048 1968 ? Ss 00:43 0:00 /usr/sbin/atd -f
root 1161 0.0 0.0 4404 1224 ? Ss 00:43 0:00 /usr/sbin/acpid
root 1168 0.0 1.0 275348 21432 ? Ssl 00:43 0:00 /usr/lib/snapd/snapd
root 1197 0.0 0.2 277184 5824 ? Ssl 00:43 0:00 /usr/lib/policykit-1/polkitd --no-debug
root 1199 0.0 0.0 13380 152 ? Ss 00:43 0:00 /sbin/mdadm --monitor --pid-file /run/mdadm/monitor.pid --daemonise --scan --syslog
notch 1211 0.0 0.1 27456 2336 ? Ss 00:43 0:00 SCREEN -dmS blockycraft java -Xms500M -Xmx500M -jar ./sponge.jar nogui
notch 1214 2.8 29.1 2496692 592428 pts/0 Ssl+ 00:43 2:14 java -Xms500M -Xmx500M -jar ./sponge.jar nogui
root 1338 0.0 0.2 65524 5904 ? Ss 00:43 0:00 /usr/sbin/sshd -D
root 1365 0.0 0.0 5228 120 ? Ss 00:43 0:00 /sbin/iscsid
root 1366 0.0 0.1 5728 3516 ? S<Ls 00:43 0:00 /sbin/iscsid
mysql 1417 2.7 8.4 1117044 171208 ? Ssl 00:43 2:14 /usr/sbin/mysqld
root 1458 0.0 0.0 15944 1584 tty1 Ss+ 00:43 0:00 /sbin/agetty --noclear tty1 linux
root 1472 0.0 1.4 286020 28456 ? Ss 00:43 0:00 php-fpm: master process (/etc/php/7.0/fpm/php-fpm.conf)
www-data 1481 0.0 0.3 286020 7172 ? S 00:43 0:00 php-fpm: pool www
www-data 1482 0.0 0.3 286020 7172 ? S 00:43 0:00 php-fpm: pool www
root 1483 0.0 1.0 327732 22256 ? Ss 00:43 0:01 /usr/sbin/apache2 -k start
proftpd 1486 0.0 0.2 119648 4296 ? Ss 00:43 0:00 proftpd: (accepting connections)
www-data 2149 1.8 1.2 330680 24760 ? S 01:26 0:40 /usr/sbin/apache2 -k start
notch 2355 0.0 0.2 45252 4516 ? Ss 01:48 0:00 /lib/systemd/systemd --user
notch 2358 0.0 0.0 61280 1892 ? S 01:48 0:00 (sd-pam)
root 2363 0.0 0.3 95408 6944 ? Ss 01:49 0:00 sshd: notch [priv]
notch 2435 0.0 0.2 95408 4252 ? S 01:49 0:00 sshd: notch@pts/1
notch 2438 0.0 0.2 22680 5184 pts/1 Ss 01:49 0:00 -bash
notch 2525 0.0 0.1 37368 3332 pts/1 R+ 02:02 0:00 ps -auxwww/usr/sbin/cron -f
/usr/lib/policykit-1/polkitd --no-debug
/sbin/mdadm --monitor --pid-file /run/mdadm/monitor.pid --daemonise --scan --syslog
SCREEN -dmS blockycraft java -Xms500M -Xmx500M -jar ./sponge.jar nogui
java -Xms500M -Xmx500M -jar ./sponge.jar nogui
/usr/sbin/mysqld
Cron & Systemd
notch@blocky:~$ crontab -l ; cat /etc/crontab ; systemctl list-timers
# Edit this file to introduce tasks to be run by cron.
#
# Each task to run has to be defined through a single line
# indicating with different fields when the task will be run
# and what command to run for the task
#
# To define the time you can provide concrete values for
# minute (m), hour (h), day of month (dom), month (mon),
# and day of week (dow) or use '*' in these fields (for 'any').#
# Notice that tasks will be started based on the cron's system
# daemon's notion of time and timezones.
#
# Output of the crontab jobs (including errors) is sent through
# email to the user the crontab file belongs to (unless redirected).
#
# For example, you can run a backup of all your user accounts
# at 5 a.m every week with:
# 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
#
# For more information see the manual pages of crontab(5) and cron(8)
#
# m h dom mon dow command
@reboot cd /home/notch/minecraft && ./start.sh
# /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
# m h dom mon dow user command
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 ACTIVATES
tue 2023-09-19 05:45:20 CDT 3h 42min left Tue 2023-09-19 00:43:03 CDT 1h 20min ago snapd.refresh.timer snapd.refresh.service
tue 2023-09-19 16:13:24 CDT 14h left Tue 2023-09-19 00:43:03 CDT 1h 20min ago apt-daily.timer apt-daily.service
wed 2023-09-20 00:57:57 CDT 22h left Tue 2023-09-19 00:57:57 CDT 1h 5min ago systemd-tmpfiles-clean.timer systemd-tmpfiles-clean
3 timers listed.
Pass --all to see loaded but inactive timers, too.
lines 1-7/7 (END)@reboot cd /home/notch/minecraft && ./start.sh
Sudo Version
notch@Blocky:~$ sudo --version
Sudo version 1.8.16
Sudoers policy plugin version 1.8.16
Sudoers file grammar version 45
Sudoers I/O plugin version 1.8.16Sudo version 1.8.16
Glibc Version
notch@blocky:~$ ldd --version
ldd (Ubuntu GLIBC 2.23-0ubuntu9) 2.23
Copyright (C) 2016 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 2.23-0ubuntu9) 2.23