SYSTEMD oct22

##### SYSTEMD NSPAWN ON UBUNTUroot@ubuserver:~# history
    1  hostnamectl set-hostname ubuserver
    2  reboot
    3  systemctl status systemd-networkd
    4  systemctl status systemd-timesyncd.service
    5  cd /etc/netplan/
    6  ls
    7  vim 00-installer-config.yaml
    8  man networkctl
    9  networkctl status
   10  networkctl list
   11  exit
   12  apt install debootstrap systemd-container bridge-utils
   13  mkdir -p /var/lib/machines/helloworld
   14  debootstrap stable /var/lib/machines/helloworld http://deb.debian.org/debian/
   15  chown root:root /var/lib/machines
   16  chown 700 /var/lib/machines/
   17  ls -l /var/lib/machines/helloworld/
   18  du -hs /var/lib/machines/helloworld/
   19  systemd-nspawn -UM hello-world
   20  systemd-nspawn -UbM hello-world
   21  machinectl list-images
   22  machinectl status helloworld
   23  #machinectl start helloworld
   24  systemd-nswap -UM hello-world
   25  systemd-nspawn -UM hello-world
   26  machinectl start helloworld
   27  machinectl status helloworld
   28  systemd-nspawn -UM hello-world
   29  systemd-nspawn -UM helloworld
   30  machinectl stop helloworld
   31  systemd-nspawn -UM helloworld
   32  systemd-nspawn -UbM helloworld
   33  machinectl start helloworld
   34  machinectl login helloworld
   35  machinectl list
   36  ls /
   37  ls -l /var/lib/machines/helloworld/
   38  exit
   39  history

###### ALL COMMANDS ON RHEL9  1  dnf update -y
    2  uname -r
    3  reboot
    4  cd /usr/lib/systemd/system
    5  ls
    6  vim tuned.service
    7  systemctl -t help
    8  systemctl cat tuned.service
    9  man 7 systemd.directives
   10  man systemd.services
   11  man systemd.service
   12  man systemd.exec
   13  man -k systemd
   14  man -k systemd | wc
   15  systemctl edit sshd.service
   16  export SYSTEMD_EDITOR=vim
   17  systemctl edit sshd.service
   18  systemctl cat sshd.service
   19  systemctl restart sshd
   20  systemctl status sshd
   21  systemctl edit sshd.service
   22  systemctl restart sshd.service
   23  systemctl status sshd
   24  systemctl edit sshd.service
   25  systemctl show sshd.services
   26  man systemd.directives
   27  man systemd.resource-control
   28  systemctl show sshd.services | wc
   29  systemctl show --all sshd.services | wc
   30  systemctl -t target show-unit-files
   31  systemctl -t target list-unit-files
   32  systemctl cat multi-user.target
   33  systemctl cat network.target
   34  cd /etc/systemd/system/
   35  ls
   36  cd multi-user.target.wants/
   37  ls -l
   38  systemctl disable --now crond.service
   39  ls -l
   40  systemctl enable --now crond.service
   41  dnf install httpd
   42  systemctl status httpd.service
   43  systemctl cat httpd.service
   44  ls -l
   45  systemctl enable httpd.service
   46  ls -l
   47  systemctl status httpd.service
   48  systemctl start httpd
   49  systemctl status httpd.service
   50  systemctl list-dependencies
   51  systemctl get-default
   52  systemctl set-default multi-user.target
   53  which reboot
   54  file /sbin/reboot
   55  systemctl reboot
   56  vim /etc/default/grub
   57  grub2-mkconfig -o /boot/grub2/grub.cfg
   58  reboot
   59  systemctl list-units
   60  systemctl set-default graphical.target
   61  reboot
   62  systemctl status sshd.socket
   63  systemctl status sshd.service
   64  ps aux | grep ssh
   65  exit
   66  journalctl
   67  systemctl status rsyslog
   68  cd /etc/systemd/
   69  ls
   70  vim journald.conf
   71  mkdir /var/log/journal
   72  systemd-cd /var/log/journal/
   73  ls
   74  cd /var/log/journal/
   75  ls
   76  cd
   77  journalctl -u sshd
   78  systemctl status sshd
   79  journalctl -xb
   80  dnf install -y git
   81  git clone https://github.com/sandervanvugt/systemd
   82  cd systemd/
   83  ls
   84  ./countdown 12
   85  systemctl restart systemd-journal-flush.service
   86  ls /var/log/journal/
   87  ls /var/log/journal/215e3b9ed06f417bb105eaba3fc231ec/
   88  dnf install -y vsftpd
   89  systemctl stop httpd
   90  systemctl edit httpd
   91  EDITOR=/usr/bin/vim
   92  systemctl edit httpd
   93  export SYSTEMD_EDITOR=/usr/bin/vim
   94  systemctl edit httpd
   95  systemctl cat httpd
   96  ps aux | grep ftp
   97  systemctl start httpd
   98  ps aux | grep ftp
   99  systemctl status vsftpd
  100  kill -9 5128
  101  systemctl status httpd
  102  ps aux | grep ftp
  103  systemctl cat sshd
  104  systemctl status sshd
  105  kill -9 946
  106  systemctl status sshd
  107  systemctl cat sshd
  108  cd
  109  cd systemd/
  110  ls
  111  cat sleep.service
  112  cp sleep.service /etc/systemd/system
  113  systemctl start sleep
  114  systemctl status sleep
  115  cat securesleep.service
  116  systemctl daemon-reload
  117  rpm -qa | grep systemd
  118  vim /etc/nsswitch.conf
  119  pwd
  120  ls
  121  cat dynamicuser.service
  122  vim dynamicuser.service
  123  cp dynamicuser.service /etc/systemd/system
  124  systemctl start dynamicuser.service
  125  ps aux | grep sleep
  126  getent passwd
  127  cat /etc/passwd
  128  getent passwd
  129  ls -l /var/lib/private/
  130  ls -l /var/lib/private/dynamic/
  131  systemd-analyze
  132  systemd-analyze blame
  133  systemd-analyze verify sshd.service
  134  systemctl edit sleep.service
  135  systemd-analyze verify sleep.service
  136  systemd-analyze security
  137  systemd-analyze security chronyd.service
  138  systemd-analyze security
  139  systemd-analyze plot
  140  systemd-analyze plot --help
  141  systemd-analyze plot > whatever.svg
  142  pwd
  143  cp whatever.svg /tmp
  144  ls -l /tmp/whatever.svg
  145  cd
  146  vim /etc/fstab
  147  cd /run/systemd/generator/
  148  ls
  149  vim -.mount
  150  vim -- -.mount
  151  vim boot.mount
  152  cat /etc/fstab
  153  vim boot.mount
  154  ls /dev/disk/
  155  ls -l /dev/disk/by-uuid/
  156  cat /etc/default/grub
  157  cd
  158  systemd/countdown 12
  159  vim /etc/exports
  160  dnf install nfs-utils
  161  systemctl enable --now nfs-server
  162  cd systemd/
  163  ls
  164  vim nfsdata.mount
  165  vim nfsdata.automount
  166  cp nfsdata.* /etc/systemd/system
  167  systemctl enable --now nfsdata.automount
  168  ls /
  169  systemctl status nfsdata.automount
  170  systemctl status nfsdata.mount
  171  cd /var
  172  cd /nfsdata/
  173  ls
  174  systemctl status nfsdata.automount
  175  systemctl status nfsdata.mount
  176  mount
  177  cd
  178  sleep 10
  179  mount
  180  systemctl status nfsdata.mount
  181  systemctl -t mount list-unit-files
  182  systemctl cat tmp.mount
  183  systemctl list-unit-files fstrim*
  184  systemctl cat fstrim.timer
  185  systemctl cat fstrim.service
  186  systemctl enable --now fstrim.timer
  187  systemctl status crond
  188  ls -l /etc/cron*/
  189  systemctl list-units -t timer
  190  systemctl cat logrotate.timer
  191  man systemd.timer
  192  cd systemd/
  193  ls
  194  vim monitor.service
  195  vim monitor.timer
  196  cp moni* /etc/systemd/
  197  systemctl enable --now monitor.timer
  198  cp moni* /etc/systemd/system/
  199  systemctl enable --now monitor.timer
  200  journalclt -S today -f -u monitor.service
  201  journalctl -S today -f -u monitor.service
  202  systemctl disable monitor.timer --now
  203  ls
  204  systemctl -t socket list-unit-files
  205  systemctl cat sshd.socket
  206  systemctl disable --now sshd
  207  systemctl enable --now sshd.socket
  208  ps aux | grep ssh
  209  ssh localhost
  210  systemctl -t socket list-unit-files
  211  systemctl cat podman.socket
  212  cd
  213  cd systemd/
  214  systemctl -t path list-unit-files
  215  systemctl cat cups.path
  216  ls -l /var/cache/cups/
  217  pwd
  218  top
  219  ls /sys/bus/cpu/devices/
  220  echo 0 > /sys/bus/cpu/devices/cpu1/online
  221  lscpu
  222  vim stress1.service
  223  vim stress2.service
  224  cp stress* /etc/systemd/system
  225  systemctl start stress1
  226  systemctl start stress2
  227  top
  228  systemctl set-property --runtime system.slice CPUShares=8192
  229  top
  230  systemctl set-property system.slice CPUShares=8192
  231  top
  232  systemctl show system.slice
  233  systemctl show user.slice
  234  top
  235  systemctl set-property user.slice CPUShare=1024
  236  systemctl set-property user.slice CPUShares=1024
  237  top
  238  killall dd
  239  top
  240  pwd
  241  ./countdown 18
  242  systemd-cgls
  243  systemd-cgtop
  244  loginctl list-sessions
  245  loginctl list-seats
  246  loginctl list-users
  247  ip a
  248  loginctl list-users
  249  loginctl list-seats
  250  loginctl list-sessions
  251  loginctl kill-sessions 6
  252  loginctl kill-session 6
  253  loginctl list-sessions
  254  useradd lisa
  255  passwd lisa
  256  loginctl enable-linger lisa
  257  ssh lisa@localhost
  258  reboot
  259  ps faxu | grep nginx
  260  systemd-cgls --help
  261  systemd-cgls
  262  chvt 3
  263  systemd-cgls
  264  ssh student@192.168.29.33
  265  cd systemd/
  266  ./countdown 12
  267  udevadm monitor
  268  exit
  269  udevadm monitor
  270  ssh student@192.168.52.136
  271  ping 192.168.52.136
  272  ssh student@192.168.52.136
  273  ssh sander@192.168.52.136
  274  history
  275  ssh student@192.168.29.33
  276  history