Lin3H dec22

[student@localhost ~]$ history
    1  sudo -i
    2  echo $SHELL
    3  sudo chvt 3
    4  ls -l /root
    5  whoami
    6  sudo ls -l /root
    7  id
    8  su -
    9  sudo su -
   10  sudo -i
   11  sudo ls /root
   12  history
   13  nano countdown
   14  vim videmo.txt
   15  cat videmo.txt
   16  vimtutor
   17  vim countdown
   18  countdown
   19  ./countdown
   20  ls -l
   21  chmod +x countdown
   22  ls -l countdown
   23  ./countdown 12
   24  ls -l countdown
   25  history
   26  countdown
   27  echo $PAT
   28  echo hello
   29  echo $PATH
   30  countdown
   31  ./countdown
   32  cp countdown /usr/local/bin
   33  sudo cp countdown /usr/local/bin
   34  countdown
   35  ps
   36  ls
   37  man hier
   38  vim countdown
   39  ls -l countdown /usr/local/bin/countdown
   40  rm /usr/local/bin/countdown
   41  sudo rm /usr/local/bin/countdown
   42  sudo ln countdown /usr/local/bin/countdown
   43  ls -l countdown /usr/local/bin/countdown
   44  vim countdown
   45  ls -l countdown /usr/local/bin/countdown
   46  sudo dnf install git
   47  git clone https://github.com/sandervanvugt/linuxin3hours
   48  cd linuxin3hours/
   49  ls
   50  history
   51  cat /etc/os-release
   52  echo $USER
   53  ls -l /home/$USER
   54  ls -l /home/student
   55  ls -ld /home/student
   56  ls /tmp
   57  cd /etc
   58  ls
   59  cat passwd
   60  useradd anna
   61  sudo useradd anna
   62  tail -3 passwd
   63  man hier
   64  man passwd
   65  passwd --help
   66  sudo -i
   67  man -k user
   68  man -k user |wc
   69  man man
   70  man -k user | grep 8
   71  clear
   72  man -k sander
   73  sudo mandb
   74  man man
   75  man useradd
   76  cd
   77  countdown 12
   78  ssh [email protected]
   79  lsblk
   80  sudo umount /dev/sdb1
   81  lsblk
   82  sudo mount /dev/sdb1 /mnt
   83  cd /mnt
   84  ls
   85  lsblk
   86  cp /etc/hosts .
   87  sudo cp /etc/hosts .
   88  ls
   89  umount /dev/sdb1
   90  sudo umount /dev/sdb1
   91  lsof /mnt
   92  cd
   93  sudo umount /dev/sdb1
   94  lsblk
   95  history


#### SSH ON UBUNTU  559  ps aux
  560  ps aux | grep ssh
  561  sudo systemctl stop sshd
  562  sudo systemctl stop ssh
  563  sudo systemctl stop sshd\
  564  sudo systemctl stop sshd
  565  sudo apt install openssh-server
  566  ps aux | grep ssh
  567  sudo kill -9 3775
  568  sudo kill -9 178183
  569  ps aux | grep ssh
  570  sudo systemctl status sshd
  571  pidof sshd
  572  sudo kill $(pidof sshd)
  573  sudo systemctl cat sshd
  574  ps aux | grep ssh
  575  sudo systemctl status sshd
  576  sudo systemctl start sshd
  577  sudo systemctl status sshd
  578  ip addr show
  579  ip a
  580  sudo ufw status
  581  history