linfun day 1 sept21

[student@localhost ~]$ history
    1  vim countdown
    2  bash countdown 12
    3  history
    4  cat countdown
    5  countdown
    6  echo $PATH
    7  pwd
    8  ./countdown
    9  ls -l
   10  chmod +x countdown
   11  whoami
   12  ./countdown
   13  countdown
   14  cp countdown /usr/local/bin/
   15  sudo cp countdown /usr/local/bin/
   16  countdown
   17  history
   18  ls -l
   19  sudo systemctl isolate multi-user.target
   20  sudo reboot
   21  LS
   22  ip a
   23  systemctl status sshd
   24  #sudo apt install openssh-server
   25  whoami
   26  whoami --help
   27  whoami --version
   28  hostname
   29  hostname --help
   30  hostname -b
   31  hostname --boot
   32  hostnamectl --help
   33  hostnamectl set-hostname rocky.example.com
   34  hostnamectl statis
   35  hostnamectl status
   36  cat /etc/hostname
   37  countdown 12
   38  date
   39  date --help
   40  date --help | less
   41  date
   42  uname
   43  uname --help
   44  uname -a
   45  passwd
   46  touch test
   47  ls -l
   48  cd /
   49  pwd
   50  touch test
   51  ls -ld .
   52  sudo touch test
   53  ls -l
   54  cd
   55  last
   56  man last
   57  man -k user
   58  man man
   59  man apropos
   60  mandb
   61  man mandb
   62  sudo mandb
   63  man -k user
   64  man -k user | wc
   65  man -k user | grep 8
   66  man -k user | grep 8 | grep create
   67  man man
   68  man passwd
   69  man 5 passwd
   70  man ls
   71  pinfo '(coreutils) ls invocation'
   72  man hostnamectl
   73  lvcreate --help | less
   74  ls
   75  ls -a
   76  ls -al
   77  ls -l Documents/
   78  ls -ld Documents/
   79  ls -lrt
   80  cd /etc
   81  ls -lrt
   82  ls a*
   83  ls -d a*
   84  ls -d a???
   85  ls -d a[st]*
   86  cd
   87  mkdir mydir
   88  ls
   89  cp /etc/hosts mydir/
   90  ls mydir/
   91  rmdir mydir/
   92  rm -rf mydir/
   93  countdown 12
   94  cd /
   95  ls
   96  ls /home
   97  ls -ld /tmp
   98  cd /usr
   99  ls
  100  cd local/
  101  ls
  102  cd /
  103  cd etc
  104  ls
  105  cat passwd
  106  cat shadow
  107  sudo cat shadow
  108  ls -l shadow
  109  cd /
  110  ls
  111  cd var
  112  ls
  113  cd log
  114  ls
  115  ls -lrt
  116  tail messages
  117  sudo tail messages
  118  cd ..
  119  ls
  120  cd /
  121  ls
  122  cd dev
  123  ls
  124  lsblk
  125  cd /proc
  126  ls
  127  cat meminfo | less
  128  cd sys
  129  ls
  130  cd vm
  131  ls
  132  cd
  133  man hier
  134  cd /var
  135  sudo tail /var/log/messages
  136  sudo tail log/messages
  137  cd dump
  138  ls
  139  cd crash/
  140  sudo tail log/messages
  141  sudo tail ../log/messages
  142  history
  143  cd
  144  cp /etc/hosts dummy/
  145  cp /etc/hosts dummy
  146  ls -l dummy
  147  rm -f dummy
  148  mkdir dummy; cp /etc/hosts dummy/
  149  cd /
  150  ls -k
  151  ls -l
  152  ls bin
  153  ls /usr/bin
  154  cd
  155  ln -s /etc/hosts myhosts
  156  ls -l myhosts
  157  echo hello >> myhosts
  158  ls -l /etc/hosts
  159  sudo ln /etc/hosts hardhosts
  160  ls -il /etc/hosts hardhosts
  161  sudo vim /etc/hosts
  162  ls -il /etc/hosts hardhosts
  163  history