linfun june22 day1

[student@localhost ~]$ history
    1  ls
    2  ls /root
    3  sudo ls /root
    4  id
    5  sudo ls /root
    6  history
    7  LS
    8  ls
    9  ls /
   10  ls/
   11  sudo dnf install openssh
   12  sudo systemctl status sshd
   13  ip a
   14  history
   15  sudo systemctl stop sshd
   16  sudo systemctl start sshd
   17  ls --help | less
   18  ls --help
   19  ls --help | less
   20  ls -l -r -t
   21  ls -lrt
   22  ls --lrt
   23  ls --help | less
   24  history
   25  vim countdown
   26  countdown
   27  ./countdown
   28  ls -l countdown
   29  chmod +x countdown
   30  ./countdown 13
   31  vim countdown
   32  ./countdown 13
   33  history
   34  nano countdown
   35  echo $PATH
   36  pwd
   37  ls -l countdown
   38  ./countdown 1
   39  countdown 1
   40  cp countdown /usr/bin/
   41  sudo cp countdown /usr/bin/
   42  countdown 1
   43  history
   44  whoami
   45  id
   46  whereami
   47  hostname
   48  hostname --help
   49  hostname -a
   50  date
   51  timedatectl
   52  date +%d-%m-%y
   53  date +%d-%m-%Y
   54  date +%d-%M-%Y
   55  man date
   56  date +%d-%b-%Y
   57  man date
   58  date +%a %d-%b-%Y
   59  date +"%a %d-%b-%Y"
   60  passwd
   61  touch helo
   62  ls -l
   63  cd /var
   64  touch hello
   65  cd
   66  pwd
   67  touch helo
   68  ls -l
   69  last
   70  w
   71  sudo loginctl list-users
   72  sudo loginctl list-sessions
   73  sudo loginctl kill-session 4
   74  sudo loginctl list-sessions
   75  history
   76  ps fax
   77  countdown 1
   78  man passwd
   79  man lvcreate
   80  man man
   81  man -k user
   82  man -k user | wc
   83  man -k user
   84  man -k user | grep 8
   85  man useradd
   86  id
   87  countdown 13
   88  man -k user
   89  man -k sander
   90  history
   91  man man
   92  man apropos
   93  man mandb
   94  mandb
   95  history
   96  sudo mandb
   97  man ls
   98  pinfo '(coreutils) ls invocation
'
   99  ls /etc
  100  cat /etc/hostname
  101  sudo hostnamectl set-hostname linfun.example.com
  102  cat /etc/hostname
  103  sudo lsblk
  104  sudo ls -l /dev/sda
  105  pwd
  106  ls
  107  ls -a
  108  ls -la
  109  ls -lat
  110  ls -lart
  111  less .lesshst
  112  ls -l /etc
  113  ls -ld /etc
  114  man pwd
  115  pinfo '(coreutils) pwd invocation'
  116  cd /etc
  117  ls a*
  118  ls -d a*
  119  ls -d a????*
  120  ls -d a[nm]*
  121  ls -d a[a-e]*
  122  cd
  123  cd /var/log/
  124  cd etc
  125  mkdir blah
  126  pwd
  127  cd
  128  mkdir blah
  129  ls -l
  130  rmdir blah
  131  mkdir blah
  132  touch blah/myfile
  133  rmdir blah/
  134  rm -rf blah/
  135  false
  136  true
  137  echo $?
  138  false
  139  echo $?
  140  cat /etc/hosts
  141  tac /etc/hosts
  142  man -k ulimit
  143  man ulimit
  144  yes
  145  mkdir blah
  146  cp /etc/a* blah
  147  alias
  148  alias rm='rm -i'
  149  rm -rf blah/
  150  mkdir blah
  151  cp /etc/a* blah
  152  rm -i blah/
  153  rm -ir blah/
  154  rm -ir blah/ < yes
  155  man yes
  156  ls /
  157  man hier
  158  ls /
  159  man hier
  160  history