System/Kernel
waldo@admirer:~$ 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]=4be0cc32aba02ec4e0f010047be5ae9dee756960, stripped
Linux admirer 4.9.0-19-amd64 #1 SMP Debian 4.9.320-2 (2022-06-30) x86_64 GNU/Linux
PRETTY_NAME="Devuan GNU/Linux ascii"
NAME="Devuan GNU/Linux"
ID=devuan
ID_LIKE=debian
home_url="https://www.devuan.org/"
support_url="https://devuan.org/os/community"
bug_report_url="https://bugs.devuan.org/"4.9.0-19-amd64
Devuan GNU/Linux ascii
x86_64
Networks
waldo@admirer:~$ netstat -antup4
(No info could be read for "-p": geteuid()=1000 but you should be root.)
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 0 127.0.0.1:25 0.0.0.0:* LISTEN -
tcp 0 304 10.10.10.187:22 10.10.16.8:42040 ESTABLISHED - 127.0.0.1:3306
127.0.0.1:25
Users & Groups
waldo@admirer:~$ cat /etc/passwd ; ls -lasht /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
_apt:x:100:65534::/nonexistent:/bin/false
debian-exim:x:101:104::/var/spool/exim4:/bin/false
avahi-autoipd:x:102:105:Avahi autoip daemon,,,:/var/lib/avahi-autoipd:/bin/false
messagebus:x:103:106::/var/run/dbus:/bin/false
sshd:x:104:65534::/run/sshd:/usr/sbin/nologin
waldo:x:1000:1000:Waldo Cooper:/home/waldo:/bin/bash
mysql:x:105:110:MySQL Server,,,:/nonexistent:/bin/false
ftp:x:106:111:ftp daemon,,,:/srv/ftp:/bin/false
ftpuser:x:1001:1002::/srv/ftp:/bin/false
penny:x:1002:1005:Penny Wise:/home/penny:/bin/bash
rajesh:x:1003:1006:Rajesh Nayyar:/home/rajesh:/bin/bash
amy:x:1004:1007:Amy Bialik:/home/amy:/bin/bash
leonard:x:1005:1008:Leonard Galecki:/home/leonard:/bin/bash
bernadette:x:1007:1010:Bernadette Rauch:/home/bernadette:/bin/bash
howard:x:1008:1011:Howard Helberg:/home/howard:/bin/bash
total 36K
4.0k drwxr-xr-x 22 root root 4.0k aug 24 16:09 ..
4.0K drwxr-x--- 3 waldo waldo 4.0K Apr 29 2020 waldo
4.0K drwxr-xr-x 2 rajesh rajesh 4.0K Dec 2 2019 rajesh
4.0K drwxr-xr-x 2 penny penny 4.0K Dec 2 2019 penny
4.0K drwxr-xr-x 2 leonard leonard 4.0K Dec 2 2019 leonard
4.0K drwxr-xr-x 2 howard howard 4.0K Dec 2 2019 howard
4.0K drwxr-xr-x 2 bernadette bernadette 4.0K Dec 2 2019 bernadette
4.0K drwxr-xr-x 2 amy amy 4.0K Dec 2 2019 amy
4.0K drwxr-xr-x 9 root root 4.0K Dec 2 2019 .rajesh
penny
leonard
howard
bernadette
amy
waldo@admirer:~$ 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(_apt) gid=65534(nogroup) groups=65534(nogroup)
uid=101(Debian-exim) gid=104(Debian-exim) groups=104(Debian-exim)
uid=102(avahi-autoipd) gid=105(avahi-autoipd) groups=105(avahi-autoipd)
uid=103(messagebus) gid=106(messagebus) groups=106(messagebus)
uid=104(sshd) gid=65534(nogroup) groups=65534(nogroup)
uid=1000(waldo) gid=1000(waldo) groups=1000(waldo),1001(admins)
uid=105(mysql) gid=110(mysql) groups=110(mysql)
uid=106(ftp) gid=111(ftp) groups=111(ftp)
uid=1001(ftpuser) gid=1002(ftpuser) groups=1002(ftpuser),111(ftp)
uid=1002(penny) gid=1005(penny) groups=1005(penny),1001(admins)
uid=1003(rajesh) gid=1006(rajesh) groups=1006(rajesh),1003(developers)
uid=1004(amy) gid=1007(amy) groups=1007(amy),1003(developers)
uid=1005(leonard) gid=1008(leonard) groups=1008(leonard),1003(developers)
uid=1007(bernadette) gid=1010(bernadette) groups=1010(bernadette),1004(designers)
uid=1008(howard) gid=1011(howard) groups=1011(howard),1004(designers)uid=1000(waldo) gid=1000(waldo) groups=1000(waldo),1001(admins)
uid=1001(ftpuser) gid=1002(ftpuser) groups=1002(ftpuser),111(ftp)
uid=1002(penny) gid=1005(penny) groups=1005(penny),1001(admins)
uid=1003(rajesh) gid=1006(rajesh) groups=1006(rajesh),1003(developers)
uid=1004(amy) gid=1007(amy) groups=1007(amy),1003(developers)
uid=1005(leonard) gid=1008(leonard) groups=1008(leonard),1003(developers)
uid=1007(bernadette) gid=1010(bernadette) groups=1010(bernadette),1004(designers)
uid=1008(howard) gid=1011(howard) groups=1011(howard),1004(designers)
SUIDs
waldo@admirer:~$ find / -perm -04000 -ls -type f 2>/dev/null
131961 40 -rwsr-xr-x 1 root root 40536 Mar 17 2021 /bin/su
133355 40 -rwsr-xr-x 1 root root 40200 May 4 2018 /bin/mount
133356 28 -rwsr-xr-x 1 root root 27616 May 4 2018 /bin/umount
155669 32 -rwsr-xr-x 1 root root 30800 Aug 21 2018 /bin/fusermount
136408 60 -rwsr-xr-x 1 root root 61240 Nov 10 2016 /bin/ping
142625 16 -rwsr-xr-x 1 root root 14848 Jan 26 2022 /usr/lib/policykit-1/polkit-agent-helper-1
148301 432 -rwsr-xr-x 1 root root 440728 Jul 15 2019 /usr/lib/openssh/ssh-keysign
147093 44 -rwsr-xr-- 1 root messagebus 44056 Jun 26 2019 /usr/lib/dbus-1.0/dbus-daemon-launch-helper
142698 12 -rwsr-xr-x 1 root root 10232 Mar 28 2017 /usr/lib/eject/dmcrypt-get-device
143768 1004 -rwsr-xr-x 1 root root 1027848 May 4 2021 /usr/sbin/exim4
153914 52 -rwsr-xr-x 1 root root 50040 Mar 17 2021 /usr/bin/chfn
142623 28 -rwsr-xr-x 1 root root 27456 Jan 26 2022 /usr/bin/pkexec
132267 40 -rwsr-xr-x 1 root root 40312 Mar 17 2021 /usr/bin/newgrp
153918 60 -rwsr-xr-x 1 root root 59680 Mar 17 2021 /usr/bin/passwd
153915 40 -rwsr-xr-x 1 root root 40504 Mar 17 2021 /usr/bin/chsh
153917 76 -rwsr-xr-x 1 root root 75792 Mar 17 2021 /usr/bin/gpasswd
148738 140 -rwsr-xr-x 1 root root 140944 Jan 23 2021 /usr/bin/sudoSGIDs
waldo@admirer:~$ find / -perm -02000 -ls -type f 2>/dev/null
132940 36 -rwxr-sr-x 1 root shadow 35592 May 27 2017 /sbin/unix_chkpwd
10161 4 drwxr-s--- 2 debian-exim adm 4096 nov 16 08:57 /var/log/exim4
11489 4 drwxr-s--- 2 mysql adm 4096 nov 16 08:57 /var/log/mysql
189 4 drwxrwsr-x 2 root staff 4096 Jun 10 2018 /var/local
247 4 drwxrwsr-x 2 root mail 4096 aug 24 16:05 /var/mail
153916 24 -rwxr-sr-x 1 root shadow 22808 Mar 17 2021 /usr/bin/expiry
148294 352 -rwxr-sr-x 1 root ssh 358624 Jul 15 2019 /usr/bin/ssh-agent
153913 72 -rwxr-sr-x 1 root shadow 71856 Mar 17 2021 /usr/bin/chage
147652 40 -rwxr-sr-x 1 root crontab 40264 Oct 29 2021 /usr/bin/crontab
150849 12 -rwxr-sr-x 1 root mail 10952 Dec 25 2016 /usr/bin/dotlock.mailutils
135587 16 -rwxr-sr-x 1 root tty 14768 Apr 12 2017 /usr/bin/bsd-write
131199 28 -rwxr-sr-x 1 root tty 27440 May 4 2018 /usr/bin/wall
148062 20 -rwxr-sr-x 1 root mail 19008 Jan 17 2017 /usr/bin/dotlockfile
131122 4 drwxrwsr-x 10 root staff 4096 Nov 29 2019 /usr/local
131132 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/etc
131128 4 drwxrwsr-x 4 root staff 4096 Nov 29 2019 /usr/local/lib
146998 4 drwxrwsr-x 3 root staff 4096 Nov 29 2019 /usr/local/lib/python3.5
146999 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/lib/python3.5/dist-packages
139885 4 drwxrwsr-x 4 root staff 4096 aug 24 16:06 /usr/local/lib/python2.7
160168 4 drwxrwsr-x 2 root staff 4096 aug 24 16:06 /usr/local/lib/python2.7/site-packages
139887 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/lib/python2.7/dist-packages
131130 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/sbin
131127 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/games
131126 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/bin
131124 4 drwxrwsr-x 7 root staff 4096 Nov 29 2019 /usr/local/share
132060 4 drwxrwsr-x 6 root staff 4096 Nov 29 2019 /usr/local/share/xml
152068 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/share/xml/misc
152065 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/share/xml/declaration
152069 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/share/xml/schema
152066 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/share/xml/entities
147280 4 drwxrwsr-x 7 root staff 4096 Nov 29 2019 /usr/local/share/sgml
147284 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/share/sgml/misc
147281 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/share/sgml/declaration
147285 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/share/sgml/stylesheet
147282 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/share/sgml/dtd
147283 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/share/sgml/entities
131125 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/share/man
147270 4 drwxrwsr-x 3 root staff 4096 Nov 29 2019 /usr/local/share/emacs
147271 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/share/emacs/site-lisp
152077 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/share/ca-certificates
131129 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/include
131131 4 drwxrwsr-x 2 root staff 4096 Nov 29 2019 /usr/local/srcProcesses
waldo@admirer:~$ ps -auxwww
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 15796 1840 ? Ss 08:35 0:01 init [2]
root 440 0.0 0.1 39344 4168 ? Ss 08:35 0:00 udevd --daemon
root 1373 0.0 0.0 250108 2584 ? Ssl 08:35 0:00 /usr/sbin/rsyslogd
root 1428 0.0 0.2 200204 10524 ? Sl 08:35 0:18 /usr/bin/vmtoolsd
root 1487 0.0 0.6 269324 28012 ? Ss 08:35 0:02 /usr/sbin/apache2 -k start
root 1580 0.0 0.0 28456 3012 ? S 08:35 0:00 /usr/sbin/vsftpd
message+ 1584 0.0 0.0 32872 2500 ? Ss 08:35 0:00 /usr/bin/dbus-daemon --system
root 1635 0.0 0.0 21644 3484 ? S 08:35 0:00 /usr/sbin/bluetoothd
root 1648 0.0 0.0 35912 2264 ? Ss 08:35 0:00 /usr/sbin/irqbalance --pid=/var/run/irqbalance.pid
root 1681 0.0 0.0 28528 2952 ? S 08:35 0:00 /usr/sbin/elogind -D
root 1683 0.0 0.0 29664 2524 ? Ss 08:35 0:00 /usr/sbin/cron
root 1719 0.0 0.0 69960 3804 ? Ss 08:35 0:00 /usr/sbin/sshd
root 1751 0.0 0.0 9780 2932 ? S 08:35 0:00 /bin/bash /usr/bin/mysqld_safe
mysql 1898 0.1 2.1 680184 85136 ? Sl 08:35 0:38 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib/x86_64-linux-gnu/mariadb18/plugin --user=mysql --skip-log-error --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/run/mysqld/mysqld.sock --port=3306
root 1899 0.0 0.0 4192 656 ? S 08:35 0:00 logger -t mysqld -p daemon error
Debian-+ 2289 0.0 0.0 56416 3000 ? Ss 08:36 0:00 /usr/sbin/exim4 -bd -q30m
root 2334 0.0 0.0 14520 1632 tty1 Ss+ 08:36 0:00 /sbin/getty 38400 tty1
root 2335 0.0 0.0 14520 1800 tty2 Ss+ 08:36 0:00 /sbin/getty 38400 tty2
root 2336 0.0 0.0 14520 1748 tty3 Ss+ 08:36 0:00 /sbin/getty 38400 tty3
root 2337 0.0 0.0 14520 1640 tty4 Ss+ 08:36 0:00 /sbin/getty 38400 tty4
root 2338 0.0 0.0 14520 1632 tty5 Ss+ 08:36 0:00 /sbin/getty 38400 tty5
root 2339 0.0 0.0 14520 1632 tty6 Ss+ 08:36 0:00 /sbin/getty 38400 tty6
www-data 4874 0.0 0.3 270256 16124 ? S 11:48 0:00 /usr/sbin/apache2 -k start
root 5714 0.0 0.1 108804 7200 ? Ss 14:06 0:00 sshd: waldo [priv]
waldo 5721 0.0 0.0 108804 3820 ? S 14:06 0:00 sshd: waldo@pts/0
waldo 5722 0.0 0.1 20936 4928 pts/0 Ss 14:06 0:00 -bash
waldo 5969 0.0 0.0 19188 2540 pts/0 R+ 14:40 0:00 ps -auxwww/usr/sbin/vsftpd
/usr/sbin/bluetoothd
/usr/sbin/cron
Cron & Systemd
waldo@admirer:~$ crontab -l ; cat /etc/crontab ; systemctl list-timers
no crontab for waldo
# /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 )
#
-bash: systemctl: command not foundno systemd
waldo@admirer:~$ /usr/sbin/service --status-all | grep -v '-'
[ + ] apache2
[ + ] bluetooth
[ + ] cron
[ + ] dbus
[ + ] elogind
[ + ] eudev
[ ? ] hwclock.sh
[ + ] irqbalance
[ ? ] kmod
[ ? ] networking
[ + ] rsyslog
[ + ] ssh
[ + ] vsftpdSudo Version
waldo@admirer:~$ sudo --version
Sudo version 1.8.19p1
Sudoers policy plugin version 1.8.19p1
Sudoers file grammar version 45
Sudoers I/O plugin version 1.8.19p1Glibc Version
waldo@admirer:~$ ldd --version
ldd (Debian GLIBC 2.24-11+deb9u4) 2.24
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.