linfun jan24

[student@centos2 ~]$ history
    1  cat /etc/os-release
    2  exit
    3  vim countdown
    4  countdown 12
    5  ./countdown 12
    6  ls -l countdown
    7  chmod +x countdown
    8  cat countdown
    9  vim countdown
   10  cat countdown
   11  history
   12  ls -l /root
   13  sudo ls -l /root
   14  id
   15  dnf install openssh
   16  sudo dnf install openssh
   17  sudo systemctl status sshd
   18  ip a
   19  ssh 192.168.29.141
   20  history
   21  LS
   22  ls
   23  uname --help
   24  uname -h
   25  ls -lrt
   26  pwd
   27  cd /etc
   28  ls -lrt
   29  whoami
   30  whoami --help
   31  hostname
   32  hostname --help
   33  hostname --help | less
   34  hostname -i
   35  date
   36  date --help | less
   37  date +%d-%M-%Y
   38  date +%d-%m-%Y
   39  uname
   40  uname -a
   41  passwd
   42  cd
   43  touch hello
   44  cd /etc
   45  touch hello
   46  cd
   47  ls -l hello
   48  touch hello
   49  ls -l hello
   50  last
   51  history
   52  history | less
   53  man touch
   54  pinfo '(coreutils) touch invocation'
   55  man man
   56  man -k user
   57  man -k user | wc -l
   58  man -k user
   59  man -k user | grep 8
   60  man -k sander
   61  man man
   62  man apropos
   63  man mandb
   64  sudo mandb
   65  man lvcreate
   66  history
   67  man -k lvm
   68  man lvcreate
   69  man -k group
   70  man -k group | wc -l
   71  man -k group | grep 8
   72  man -k group | grep 8 | grep user
   73  man groupmems
   74  man -k hostname
   75  man hostnamectl
   76  man hostname
   77  hostnamectl centos2.example.com
   78  hostnamectl --help
   79  hostnamectl hostname centos2.example.com
   80  exit
   81  lvcreate --help | less
   82  history
   83  pwd
   84  echo $USER
   85  ls
   86  ls -a
   87  ls -al
   88  ls /etc
   89  ls -d /etc
   90  ls -dl /etc
   91  ls -lrt
   92  cd /etc
   93  ls a
   94  ls a*
   95  ls -d a*
   96  ls -d a???
   97  ls -d *???
   98  ls -d ????
   99  ls -d a[nm]
  100  ls -d a[nm]*
  101  ls -d a[a-m]*
  102  ls trail
  103  ls -trail
  104  cd
  105  cd /var/log
  106  mkdir one
  107  cd /tmp
  108  mkdir one
  109  rmdir one
  110  mkdir one
  111  touch one/two
  112  rmdir one
  113  rm -rf one
  114  man hier
  115  ls /usr
  116  du -hs .
  117  sudo du -hs .
  118  cd /usr
  119  du -hs .
  120  cd /var
  121  ls
  122  ls log/
  123  ls -l log/
  124  less logs/messages
  125  less log/messages
  126  sudo less log/messages
  127  cd /etc
  128  ls
  129  ls -l
  130  less vconsole.conf
  131  less passwd
  132  less os-release
  133  sudo apt install zypper
  134  touch jhhkh
  135  cd
  136  countdown
  137  echo $PATH
  138  ./countdown
  139  cp countdown /usr/local/bin
  140  whoami
  141  ls ld /usr/local/bin
  142  ls -ld /usr/local/bin
  143  sudo cp countdown /usr/local/bin
  144  countdown
  145  history
  146  less log/messages
  147  ls /var/log/messages
  148  cd /var/cache
  149  ls -l /var/log/messages
  150  ls -l ../log/messages
  151  cd
  152  mkdir one/two/three/four/five
  153  mkdir -p one/two/three/four/five
  154  cd one/two/three/four/five
  155  pwd
  156  ls ..
  157  ls ../..
  158  ls ../../../../..
  159  ls ../../../../../../..
  160  cd
  161  cp countdown /tmp/newdir
  162  ls -l /tmp/newdir
  163  rm -f /tmp/newdir
  164  cp countdown /tmp/newdir/
  165  mkdir /tmp/newdir
  166  cp countdown /tmp/newdir/
  167  cp * /tmp/newdir
  168  ls -a /tmp/newdir
  169  rm /tmp/newdir/*
  170  cp -a .* /tmp/newdir/
  171  ls -a /tmp/newdir
  172  cp --help | less
  173  ls
  174  mv hello bue
  175  ls
  176  mv bue /tmp/
  177  ls
  178  history