linfun nov22 day1

[student@linfun ~]$ history
    1  whoami
    2  nano countdown
    3  ls countdown
    4  ls -l countdown
    5  ./countdown
    6  chmod +x countdown
    7  ls -l countdown
    8  ./countdown 13
    9  cat countdown
   10  history
   11  ls /root
   12  sudo ls /root
   13  id
   14  sudo useradd lisa
   15  sudo passwd lisa
   16  su - lisa
   17  ./countdown 1
   18  sudo usermod -aG wheel lisa
   19  id lisa
   20  ls
   21  LS
   22  ssh student@192.168.29.42
   23  man usermod
   24  usermod --help
   25  ls --help
   26  ls --help | less
   27  whoami
   28  hostname
   29  hostnamectl hostname linfun.example.com
   30  echo $?
   31  exit
   32  date
   33  timedatectl show
   34  timedatectl status
   35  uname
   36  uname -r
   37  passwd
   38  sudo passwd lisa
   39  touch mynewfile
   40  ls -l mynewfile
   41  date
   42  touch mynewfile
   43  ls -l mynewfile
   44  last
   45  man last
   46  man lvcreate
   47  man man
   48  man lvcreate
   49  ./countdown 13
   50  ls -l countdown
   51  countdown
   52  echo $PATH
   53  cp countdown /usr/local/bin/
   54  ls -l /usr/local/bin
   55  ls -ld /usr/local/bin
   56  sudo cp countdown /usr/local/bin/
   57  countdown
   58  man -k user
   59  sudo mandb
   60  man -k user
   61  man -k user | wc
   62  man -k user | grep create
   63  man -k user | grep 8
   64  countdown 1
   65  man man
   66  man ls
   67  pinfo '(coreutils) ls invocation'
   68  ./countdown 4
   69  man -k hostname
   70  man hostname
   71  man 5 hostname
   72  history | grep hostname
   73  man lvcreate
   74  man useradd
   75  history
   76  history -d 75
   77  lsblk
   78  cd /etc
   79  ls
   80  pwd
   81  cd /var/lib/logrotate/
   82  pwd
   83  cd
   84  ls
   85  ls -a
   86  ls -la
   87  ls -l /var/lib/logrotate/
   88  ls -ld /var/lib/logrotate/
   89  cd /etc
   90  ls -lrt
   91  man ls
   92  ls a
   93  ls a*
   94  ls -d a*
   95  ls -d a???
   96  ls -d a[lm]???*
   97  ls -d a[l-s]???*
   98  mkdir blah
   99  cd
  100  pwd
  101  mkdir coffee
  102  cd coffee/
  103  pwd
  104  cd ..
  105  rmdir coffee/
  106  countdown 13
  107  cd /
  108  man hier
  109  ls
  110  ls usr
  111  cd /usr/local
  112  ls
  113  cd /etc
  114  ls
  115  cd /var
  116  ls
  117  cd log/
  118  ls
  119  cd /home
  120  ls
  121  man useradd
  122  cd student/
  123  ls
  124  cd /tmp
  125  ls
  126  ls -ld .
  127  touch userfile
  128  cd /
  129  touch userfile
  130  cd
  131  cd /var
  132  ls -l log/messages
  133  ls -l /log/messages
  134  ls -l /var/log/messages
  135  cd cache/
  136  pwd
  137  ls -l /var/log/messages
  138  ls -l ../log/messages
  139  cd
  140  cp countdown mydir
  141  ls -l
  142  rm mydir
  143  cp countdown mydir/
  144  mkdir /tmp/mydir/
  145  cp -a .* /tmp/mydir/
  146  ls -a /tmp/mydir/
  147  man cp
  148  mv mynewfile /tmp/
  149  ls
  150  mv /tmp/mynewfile .
  151  ls
  152  mv mynewfile myfile
  153  countdown 5
  154  mkdir /tmp/trash
  155  cp -aR .* /tmp/trash/
  156  tree /tmp/trash/
  157  ls -a /tmp/trash/
  158  cp -R /tmp/trash .
  159  ls
  160  rm -rf trash/
  161  cp -R /tmp/trash/ .
  162  ls
  163  cat /etc/os-release
  164  sudo dnf install tree
  165  sudo apt install tree
  166  sudo yum install tree
  167  cat /etc/os-release
  168  history