Linux in 3 hours march 2023

tudent@student-virtual-machine:~$ history
    1  pwd
    2  whoami
    3  echo hello
    4  echo STDOUT
    5  echo hello > hellofile
    6  ls
    7  ls -l
    8  cd /
    9  echo hello > hellofile
   10  cd tmp
   11  echo hello > tmpfile
   12  ls
   13  cd
   14  history
   15  ls /root
   16  sudo /root
   17  sudo ls /root
   18  su -
   19  sudo su -
   20  sudo -i
   21  nano countdown
   22  countdown
   23  ./countdown
   24  chmod +x countdown
   25  ./countdown 12
   26  sudo passwd root
   27  su -
   28  id
   29  echo $SHELL
   30  vimtutor
   31  sudo apt install vim-runtime
   32  vimtutor
   33  vim mydocument
   34  sudo apt install vim
   35  vimtutor
   36  history
   37  vim countdown
   38  history
   39  ls -l
   40  countdown
   41  echo $PATH
   42  ./countdown 1
   43  cat countdown
   44  cp countdown /usr/local/bin
   45  sudo ln countdown /usr/local/bin
   46  ls -l countdown /usr/local/bin/countdown
   47  vim countdown
   48  ls -l countdown /usr/local/bin/countdown
   49  history
   50  ls -l countdown /usr/local/bin/countdown
   51  ls -l /
   52  find / -name "countdown"
   53  find / -name "countdown" 2> /dev/null
   54  sudo apt install git
   55  git clone https://github.com/sandervanvugt/linuxin3hours
   56  ls
   57  cd linuxin3hours/
   58  ls
   59  cd /
   60  ls
   61  echo $USER
   62  ls -ld /home/$USER
   63  cd etc
   64  ls
   65  vim passwd
   66  man hier
   67  countdown 12
   68  cd
   69  man ls
   70  man -k user
   71  man -k user | grep 8
   72  man -k user | grep 8 | less
   73  man -k user | grep 8 | wc
   74  man -k user | grep 8 | wc -l
   75  man wc
   76  man sander
   77  man -k sander
   78  sudo mandb
   79  wc --help
   80  ls --help
   81  ls --help | less
   82  sudo apt install openssh-server
   83  sudo apt update
   84  ps aux
   85  ps aux | grep ssh
   86  top
   87  sudo systemctl status sshd
   88  sudo systemctl stop sshd
   89  sudo systemctl status sshd
   90  sudo systemctl start sshd
   91  sudo systemctl status sshd
   92  sudo systemctl disable --now sshd
   93  sudo systemctl enable --now sshd
   94  sudo systemctl enable --now ssh
   95  #sudo kill -9 $(pidof ssh)
   96  pidof ssh
   97  sudo systemctl status ssh
   98  pidof sshd
   99  kill -9 $(pidof sshd)
  100  sudo kill -9 $(pidof sshd)
  101  sudo systemctl status ssh
  102  ip addr show
  103  ip a
  104  lsblk
  105  cd /media/student/B80D-54CA/
  106  ls
  107  cp /etc/hosts .
  108  cd /
  109  umount /dev/sdb1
  110  lsblk
  111  mount /dev/sdb1 /mnt
  112  sudo mount /dev/sdb1 /mnt
  113  cd /mnt
  114  ls
  115  cd
  116  history