LinuxIn3Hours dec21

[student@localhost ~]$ history
    1  vim countdown
    2  countdown 12
    3  echo $PATH
    4  ./countdown 12
    5  ls -l countdown
    6  chmod +x countdown
    7  ./countdown 12
    8  vim countdown
    9  ./countdown 5
   10  vim countdown
   11  ./countdown 5
   12  vim countdown
   13  history
   14  vim hello
   15  vimtutor
   16  nano countdown
   17  sudo reboot
   18  sudo systemctl start graphical.target
   19  echo ON GRUB BOOT PROMPT add "systemd.unit=multi-user.target" to the end of the line that starts linux
   20  history
   21  dd if=/dev/zero of=/dev/null
   22  jobs
   23  bg
   24  dd if=/dev/zero of=/dev/null &
   25  jobs
   26  sudo useradd linda
   27  tail -1 /etc/passwd
   28  su -
   29  ls -l /etc/shadow
   30  ls -l /etc/hosts
   31  tail -1 /etc/shadow
   32  sudo tail -1 /etc/shadow
   33  sudo -i
   34  sudo su -
   35  ls -l countdown
   36  chmod -x countdown
   37  ls -l countdown
   38  chmod +x countdown
   39  ls -l
   40    631  ls -d RHCSA* | wc
   41    632  ls -l RHCSA*/intro.md | wc
   42    633  for i in RHCSA*; do echo $i; done
   43    634  for i in RHCSA*; do vim $i/finish.md; done
   44  history
   45  #ON UBUNTU: sudo apt install openssh-server
   46  history
   47  history -d 45
   48  history
   49  ssh [email protected]
   50  sudo vim /etc/profile
   51  ls /etc/profile.d
   52  sudo vim /etc/profile.d/editor.sh
   53  export EDITOR=/usr/bin/vim
   54  sudo systemctl edit sshd.service
   55  countdown 12
   56  echo $PATH
   57  sudo cp countdown /usr/local/bin/
   58  sudo cp countdown /usr/local/sane/
   59  sudo cp countdown /usr/local/sane
   60  cat /usr/local/sane
   61  countdown 12
   62  sudo dnf install -y git
   63  git clone https://github.com/sandervanvugt/linuxin3hours
   64  cd linuxin3hours/
   65  ls
   66  cd /home/$USER
   67  echo $USER
   68  man hier
   69  echo *
   70  echo \*
   71  echo \*****
   72  echo '*****'
   73  man lvcreate
   74  man -k user
   75  man -k sander
   76  man useradd
   77  man man
   78  man apropos
   79  sudo mandb
   80  man -k user
   81  man -k user | wc
   82  man -k user
   83* man
   84  man -k user | grep 8
   85  sudo ps aux | grep dd
   86  whoami --help
   87  rpm --help
   88  rpm --help | less
   89  netstat --tulpen
   90  netstat --tulpen | less
   91  netstat -tulpen
   92  ss -tupen
   93  man ls
   94  info '(coreutils) ls invocation'
   95  pinfo '(coreutils) ls invocation'
   96  pinfo sed
   97  sudo dnf repolist
   98  sudo dnf search nmap
   99  sudo dnf install nmap
  100  sudo nmap -sn 192.168.29.0/24
  101  man ifconfig
  102  sudo ip a
  103  sudo ip addr add dev ens160 10.0.0.10/24
  104  ip a
  105  ifconfig
  106  sudo rpm -qf $(which ifconfig)
  107  which ifconfig
  108  sudo rpm -ql net-tools
  109  sudo dnf remove net-tools
  110  sudo systemctl status sshd
  111  sudo nmtui
  112  sudo systemctl NetworkManager
  113  sudo systemctl status NetworkManager
  114  sudo pidof sshd
  115  sudo kill -9 $(pidof sshd)
  116  sudo systemctl status sshd
  117  sudo firewall-cmd --list-all
  118  sudo lsblk
  119  sudo umount /dev/sdb1
  120  sudo mount /dev/sdb1 /mnt
  121  ls /mnt
  122  cp /etc/hosts /mnt
  123  sudo cp /etc/hosts /mnt
  124  sudo umount /mnt
  125  sudo systemctl cat sshd
  126  history