sudo useradd lisa
    2  sudo userdel lida
    3  sudo userdel lisa
    4  sudo passwd lisa
    5  sudo passwd root
    6  exit
    7  sudo passwd root
    8  sudo passwd bob
    9  exit
   10  touch lindafile1
   11  touch lindafile2
   12  exit
   13  cd /etc/sudoers.d/
   14  ls
   15  cat linda
   16  yum provides */pbrun
   17  cd /etc
   18  ls sudoer*
   19  cd /home/student/
   20  ./countdown 12
   21  man hier
   22  cd /
   23  ls
   24  ls -l
   25  cd boot
   26  ls
   27  cd /dev
   28  ls
   29  cd /etc
   30  ls
   31  cat sudoers
   32  cat passwd
   33  cd /
   34  ls
   35  cd home
   36  ls
   37  cd /root
   38  ls
   39  pwd
   40  cd run
   41  cd /run
   42  ls
   43  cd /tmp
   44  ls
   45  cd /usr
   46  du -hs
   47  ls
   48  cd /var
   49  ls
   50  cd log
   51  ls
   52  cd /
   53  ls -l
   54  ls -il /etc/hosts
   55  ln /etc/hosts /root/myhosts
   56  ls -il /etc/hosts /root/myhosts
   57  echo hello >> /etc/hosts
   58  ls -il /etc/hosts /root/myhosts
   59  cat /root/myhosts
   60  cd
   61  ln -s /root/myhosts /tmp/symhosts
   62  ls -il /etc/hosts /root/myhosts /tmp/symhosts
   63  cat /tmp/symhosts
   64  rm /root/myhosts
   65  ls -il /etc/hosts /root/myhosts /tmp/symhosts
   66  cat /tmp/symhosts
   67  ln /etc/hosts /root/myhosts
   68  ls -il /etc/hosts /root/myhosts /tmp/symhosts
   69  ln /etc /myetc
   70  ln /boot/vmlinuz-4.18.0-147.el8.x86_64 mykernel
   71  find / -samefile /etc/hosts
   72  find / -samefile /etc/hosts
   73  find / -samefile /etc/hosts 2> /dev/null
   74  history
   75  history | less
   76  cp /tmp/symhosts .
   77  ls -l
   78  cat symhosts
   79  man hier
   80  lsblk
   81  umount /dev/sdb1
   82  lsblk
   83  mount /dev/sdb1 /mnt
   84  ls /mnt
   85  umount /mnt
   86  cd /home/student/
   87  ls
   88  countdown
   89  echo $PATH
   90  mv countdown /usr/bin
   91  countdown 12
   92  man -k user
   93  man man
   94  man apropos
   95  man mandb
   96  mandb
   97  man -k user
   98  man man
   99  man -k user | grep 8
  100  find / -name "hosts"
  101  find / -name "*hosts*"
  102  find / -user linda
  103  find / -size +100M
  104  find / -user linda -exec ls -l {} \;
  105  find / -user linda -exec cp {} /root \;
  106  ls
  107  ls -la
  108  su - linda
  109  find / -user linda -exec cp {} /root \;
  110  ls -l
  111  pwd
  112  cd /root
  113  ls -l
  114  history
  115  ps aux
  116  ps aux | grep ssh
  117  grep linda /etc/*
  118  grep linda /etc/* 2>/dev/null
  119  grep -l linda /etc/* 2>/dev/null
  120  grep -lR linda /etc/* 2>/dev/null
  121  which vi
  122  which vim
  123  ls -l /bin/vi /bin/vim
  124  exit
  125  vim /etc/hosts
  126  vim /etc/login.defs
  127  echo $(( 99999 / 365 ))
  128  vim /etc/login.defs
  129  groupadd sales
  130  groupadd account
  131  useradd --help
  132  useradd -G sales linda
  133  id linda
  134  usermod -aG sales linda
  135  id linda
  136  usermod -aG sales lisa
  137  useradd -G account anna
  138  useradd -G account anouk
  139  history