luth deb21

###### UDEV DEMO  90  udevadm monitor
   91  lsblk
   92  git clone https://github.com/sandervanvugt/luth
   93  cat /etc/os-release
   94  cd /usr/lib/udev/rules.d/
   95  ls
   96  vim 78-sound-card.rules
   97  cd
   98  cd luth/
   99  ls
  100  cp 50-custom.rules /etc/udev/rules.d/
  101  cd /etc/udev/rules.d/
  102  ls
  103  vim 50-custom.rules
  104  ps aux | grep udev
  105  systemctl restart systemd-udevd
  106  ls -l /dev/usb
  107  journalctl
  108  pwd
  109  udevadm info --query=all --name=/dev/sdb
  110  history


##### REST OF THE COURSE[root@localhost luth]# history
    1  history
    2  modprobe softdog
    3  #echo h >/proc/sysrq-trigger
    4  #echo c >/proc/sysrq-trigger
    5  history -w
    6  history
    7  modprobe softdog
    8  #echo h >/proc/sysrq-trigger
    9  #echo c >/proc/sysrq-trigger
   10  history -w
   11  uname -r
   12  mount
   13  mount | grep proc
   14  cd /proc
   15  ls
   16  less cpuinfo
   17  lscpu
   18  ls
   19  less meminfo
   20  cd sys
   21  ls
   22  cd
   23  yum install -y git
   24  ip a
   25  nmtui
   26  ip a
   27  yum install -y git
   28  git clone https://github.com/sandervanvugt/luth
   29  cd luth
   30  ls
   31  ./countdown 12
   32  cd /sys
   33  ls
   34  cd bus
   35  ls
   36  cd cpu/
   37  ls
   38  cd devices/
   39  ls
   40  top
   41  ls
   42  ls cpu1/
   43  cat cpu1/online
   44  echo 0 > cpu1/online
   45  cat cpu1/online
   46  top
   47  cd
   48  history
   49  cd /proc
   50  echo h > /proc/sysrq-trigger
   51  dmesg
   52  echo f > /proc/sysrq-trigger
   53  echo h > /proc/sysrq-trigger
   54  dmeg
   55  dmesg
   56  echo f > /proc/sysrq-trigger
   57  ps aux | grep gdm
   58  cd /proc/
   59  ls
   60  cd 1477/
   61  ls
   62  less status
   63  cat oom_score
   64  cd ..
   65  ls
   66  cat 2097/cmdline 2097/oom_score
   67  cd 1477
   68  ls
   69  echo 20 > oom_score_adj
   70  cat oom_score
   71  echo -50 > oom_score_adj
   72  cat oom_score
   73  history -w
   74  ps aux | grep gdm
   75  cd /proc/
   76  ls
   77  cd 1477/
   78  ls
   79  less status
   80  cat oom_score
   81  cd ..
   82  ls
   83  cat 2097/cmdline 2097/oom_score
   84  cd 1477
   85  ls
   86  echo 20 > oom_score_adj
   87  cat oom_score
   88  echo -50 > oom_score_adj
   89  cat oom_score
   90  history -w
   91  echo f > /proc/sysrq-trigger
   92  systemctl show sshd.service
   93  export EDITOR=/usr/bin/vim
   94  systemctl edit sshd.service
   95  cd /proc
   96  cd sys
   97  ls
   98  cd vm
   99  ls
  100  cat dirty_expire_centisecs
  101  echo $(( 43200 / 60 ))
  102  echo $(( 43200 / 6000 ))
  103  echo 43200 > /proc/sys/vm/dirty_expire_centisecs
  104  cat swappiness
  105  echo 60 > swappiness
  106  history -w
  107  vim /etc/sysctl.conf
  108  systemctl status tuned
  109  tuned-adm --help
  110  tuned-adm list
  111  tuned-adm profile powersave
  112  cd /usr/lib/tuned/
  113  ls
  114  cd balanced/
  115  ls
  116  vim tuned.conf
  117  cd ../network-throughput/
  118  vim tuned.conf
  119  mkdir /etc/tuned/sander
  120  cp tuned.conf /etc/tuned/sander
  121  vim /etc/tuned/sander/tuned.conf
  122  tuned-adm list
  123  tuned-adm profile sander
  124  history
  125  history -w
  126  systemctl show sshd.service
  127  export EDITOR=/usr/bin/vim
  128  systemctl edit sshd.service
  129  cd /proc
  130  cd sys
  131  ls
  132  cd vm
  133  ls
  134  cat dirty_expire_centisecs
  135  echo $(( 43200 / 60 ))
  136  echo $(( 43200 / 6000 ))
  137  echo 43200 > /proc/sys/vm/dirty_expire_centisecs
  138  cat swappiness
  139  echo 60 > swappiness
  140  history -w
  141  vim /etc/sysctl.conf
  142  systemctl status tuned
  143  tuned-adm --help
  144  tuned-adm list
  145  tuned-adm profile powersave
  146  cd /usr/lib/tuned/
  147  ls
  148  cd balanced/
  149  ls
  150  vim tuned.conf
  151  cd ../network-throughput/
  152  vim tuned.conf
  153  mkdir /etc/tuned/sander
  154  cp tuned.conf /etc/tuned/sander
  155  vim /etc/tuned/sander/tuned.conf
  156  tuned-adm list
  157  tuned-adm profile sander
  158  history
  159  history -w
  160  reboot
  161  cat /proc/sys/vm/swappiness
  162  cd /proc/sys
  163  ls
  164  systemctl status tuned
  165  cd
  166  luth/countdown 12
  167  lsblk
  168  ls -l /dev/sda*
  169  mount | grep dev
  170  cd /proc
  171  ls
  172  less devices
  173  lsmod | less
  174  cd /dev
  175  ls
  176  mount | grep sda1
  177  rm sda1
  178  ls /boot
  179  cd /
  180  umount /boot
  181  mount /dev/sda1 /boot
  182  ls -l /dev/sda*
  183  mknod --help
  184  mknod /dev/sda1 b 8 1
  185  ls -l /dev/sda*
  186  chown root:disk /dev/sda1
  187  chmod 660 /dev/sda1
  188  mount /dev/sda1 /boot
  189  ls -l
  190  ps aux | grep dbus
  191  history | got
  192  history | grep git
  193  cd luth
  194  cd
  195  cd luth/
  196  ls
  197  less dbus-commands.sh
  198  vim dbus-commands.sh
  199  busctl list
  200  ./countdown 12
  201  lsblk
  202  dmsetup ls
  203  dmsetup table /dev/cl/root
  204  fdisk -l /dev/sda
  205  fdisk /dev/sdb
  206  dmsetup create hideme1 --table '0 99999' linear /dev/sdb 206848
  207  dmsetup create hideme1 --table '0 99990' linear /dev/sdb 206848
  208  fdisk -l /dev/sdb
  209  dmsetup create hideme1 --table '0 99990 linear /dev/sdb 206848'
  210  dmsetup ls
  211  ls /dev/mapper/
  212  mkfs.ex2 /dev/mapper/hideme1
  213  mkfs.ext2 /dev/mapper/hideme1
  214  mount /dev/mapper/hideme1 /mnt
  215  cd /mnt
  216  ls
  217  cd /
  218  mount
  219  mount | grep ext
  220  cp /etc/a* /mnt
  221  cd /mnt
  222  ls
  223  ls -il
  224  debugfs /dev/mapper/hideme
  225  cd
  226  mount | grep ext
  227  debugfs /dev/mapper/hideme1
  228  ln anaconda-ks.cfg whatever
  229  ls -il
  230  echo hello >> whatever
  231  ls -il
  232  cd luth/
  233  ls
  234  udevadm monitor
  235  ssh sander@192.168.50.171 -p 2022
  236  history