linden day2 june21

[root@linfun data]# history
    1  exit
    2  cd /var/log
    3  ls
    4  ls -l
    5  tail messages
    6  pwd
    7  cd ..
    8  pwd
    9  tail -1 log/messages
   10  tail -1 ./log/messages
   11  ls
   12  cd gopher/
   13  pwd
   14  ls
   15  tail -1 ../log/messages
   16  tail -1 ../../var/log/messages
   17  tail -1 /var/log/messages
   18  cp /etc/hosts .
   19  ls
   20  cp /etc/hosts mydir/
   21  cp /etc/hosts mydir
   22  ls
   23  cat /etc/hosts mydir
   24  cp /etc/passwd mydir
   25  tail -1 mydir
   26  cd
   27  ls
   28  ls -a
   29  cp -a .* /tmp/rootfiles/
   30  mkdir /tmp/rootfiles; cp -a .* /tmp/rootfiles/
   31  mkdir /tmp/rootfiles; cp -a ~/.* /tmp/rootfiles/
   32  rm -rf /tmp/rootfiles/*
   33  mkdir /tmp/rootfiles; cp -a ~/.* /tmp/rootfiles/
   34  cd /tmp/rootfiles/
   35  ls
   36  ls -a
   37  cd ..
   38  rm -rf rootfiles/
   39  history
   40  cd -
   41  cd
   42  mkdir /tmp/rootfiles; cp -a ~/.* /tmp/rootfiles/
   43  ls /tmp/rootfiles/
   44  ls -a
   45  cp -R /etc /tmp/rootfiles/
   46  ls
   47  cp /etc/hosts .
   48  ls -l
   49  mv hosts whatever
   50  ls
   51  mv whatever /tmp/rootfiles/
   52  ls -il /etc/hosts
   53  ln /etc/hosts /root/hosts
   54  ls -il /etc/hosts /root/hosts
   55  echo hello >> /etc/hosts
   56  ls -il /etc/hosts /root/hosts
   57  ln -s /root/hosts /root/symhosts
   58  ls -il /etc/hosts /root/hosts /root/symhosts
   59  cat /root/symhosts
   60  ln /etc/hosts /boot/hosts
   61  rm /root/hosts
   62  ls -il /etc/hosts /root/hosts /root/symhosts
   63  cat /root/symhosts
   64  cd /
   65  ls -l
   66  cd
   67  history
   68  lsblk
   69  find / -name "hosts"
   70  find / -name "*hosts*"
   71  find / -user "linda"
   72  find / -user "linda" 2>/dev/null
   73  find / -size +2G
   74  #mkdir /root/linda; find / -user linda -exec cp {} /root/linda \;
   75  echo $PATH
   76  echo \$PATH
   77  mkdir /root/linda; find / -user linda -exec cp {} /root/linda \;
   78  history
   79  #find / -user linda -exec cp {} /root/linda \;
   80  tar cvf my_archive.tar /home /etc
   81  ls -l
   82  tar -czvf my_archive /home /etc
   83  ls -l
   84  file my_archive
   85  tar -cjvf my_archive.tar.bz2 /home /etc
   86  ls -l
   87  time tar -cJvf my_archive.tar.bz2 /home /etc
   88  time tar -cjvf my_archive.tar.bz2 /home /etc
   89  ls -l
   90  time tar -cJvf my_archive.tar.xz /home /etc &
   91  fg
   92  time tar -cJvf my_archive.tar.xz /home /etc >/dev/null &
   93  file my_archive.tar.xz
   94  file my_archive.tar.bz2
   95  ls -l
   96  tar -tvf my_archive.tar
   97  mkdir /somewhereelse
   98  tar -xvf my_archive.tar -C /somewhereelse/
   99  ls /somewhereelse/
  100  echo $PATH
  101  find / -name countdown
  102  ln /usr/local/bin/countdown /usr/local/sbin/
  103  countdown 12
  104  nano
  105  visudo
  106  which nano
  107  export EDITOR=/bin/nano
  108  which nano
  109  visudo
  110  vimtutor
  111  less /var/log/messages
  112  more /var/log/messages
  113  head /etc/passwd
  114  head -5 /etc/passwd
  115  head -n 5 /etc/passwd
  116  head -n 5 /etc/passwd | tail -1
  117  cat /etc/hosts
  118  tac /etc/hosts
  119  grep lisa /etc/passwd
  120  grep 'lisa' /etc/passwd
  121  ps aux
  122  ps aux | grep ssh
  123  ps aux | grep ssh | grep -v grep
  124  cd /etc
  125  grep root *
  126  grep root * 2>/dev/null
  127  grep -l root * 2>/dev/null
  128  grep -lR root * 2>/dev/null
  129  cd
  130  vim myusers
  131  grep 'anna' myusers
  132  grep '^anna' myusers
  133  grep 'anna$' myusers
  134  grep '^anna$' myusers
  135  vim myusers
  136  grep '^lea\b' myusers
  137  grep 'b.*t' myfile
  138  grep 'b.*t' myusers
  139  grep 'b.t' myusers
  140  grep 'b*t' myusers
  141  grep 'bo+t' myusers
  142  grep -E 'bo+t' myusers
  143  grep -E 'bo?t' myusers
  144  grep 'bo\{3\)t' myusers
  145  grep 'bo\{3\}t' myusers
  146  grep 'bo\{2\}t' myusers
  147  man semanage-fcontext
  148  cat /etc/passwd
  149  cut -d : -f 1 /etc/passwd
  150  cut -d : -f 1 /etc/passwd | sort
  151  cut -d : -f 3 /etc/passwd | sort
  152  cut -d : -f 3 /etc/passwd | sort -n
  153  echo hello
  154  echo hello | tr [a-z] [A-Z]
  155  echo hello | tr [:lower:] [:upper:]
  156  echo hello | tr [a-k] [l-z]
  157  echo hello | tr [a-l] [m-z]
  158  sed -n 5p /etc/passwd
  159  sed -i s/bananna/apple/g myusers
  160  cat myusers
  161  sed -i -e '2d' myusers
  162  echo hello 1.conf
  163  echo hello 2.conf
  164  echo hello > 1.conf
  165  echo hello > 2.conf
  166  for i in *conf; do sed -i 's/hello/break/' $i; done
  167  cat 1.conf
  168  awk -F : '{ print $4 }' /etc/passwd
  169  awk -F : '/lisa/ { print $4 }' /etc/passwd
  170  awk -F : '$3 > 999 { print $1 }' /etc/passwd
  171  tail -2 /etc/passwd
  172  man awk
  173  pinfo sed
  174  countdown 12
  175  ls > newout
  176  cat newout
  177  who > newout
  178  cat newout
  179  ls >> newout
  180  cat newout
  181  grep -R root /proc
  182  grep -R root /proc 2>/dev/null
  183  ps aux | tee psfile | grep ssh
  184  cat psfile
  185  history
  186  ls -a
  187  cat .bash_history
  188  exit
  189  echo $color
  190  exit
  191  echo $color
  192  exit
  193  history
  194  history -d 188
  195  history
  196  countdown 12
  197  grep -R root /proc 2>/dev/null
  198  rpm -qa | grep completion
  199  yum list installed | grep completion
  200  nmcli connection show
  201  nmcli connection edit ens33
  202  ip a
  203  nmcli connection add ipv4.addresses 192.168.29.111/24 ipv4.gateway 192.168.29.1 ipv4.dns 8.8.8.8
  204  nmcli connection add ipv4.addresses 192.168.29.111/24 ipv4.gateway 192.168.29.1 ipv4.dns 8.8.8.8 type ethernet
  205  echo $HISTFILE
  206  echo $HISTFILESIZE
  207  echo $PATH
  208  env
  209  echo $EDITOR
  210  visudo
  211  export EDITOR=/bin/nano
  212  visudo
  213  color=red
  214  echo $color
  215  bash
  216  echo $color
  217  export color=blue
  218  bash
  219  alias
  220  unalias rm
  221  alias
  222  alias sander='man man'
  223  sander
  224  vim /etc/bashrc
  225  sleep 100000
  226  vim /etc/profile
  227  cd /etc/profile.d/
  228  ls
  229  less lang.sh
  230  cd
  231  vim .bash_logout
  232  exit
  233  journalctl
  234  sleep 1000
  235  bg
  236  jobs
  237  sleep 2000 &
  238  ps aux | grep 56647
  239  jobs
  240  fg 1
  241  fg
  242  sleep 2000 &
  243  kill 56675
  244  ps aux | grep sleep
  245  while true; do true; done &
  246  top
  247  countdown 12
  248  yum repolist
  249  dnf repolist
  250  dfn search nmap
  251  dnf search nmap
  252  dnf install nmap
  253  dnf search emacs
  254  dnf install emacs
  255  emacs /etc/hosts
  256  reset
  257  which yum
  258  ls -l /bin/yum
  259  cd /home
  260  ls -l
  261  cd /etc
  262  ls -l
  263  useradd anna
  264  useradd linda
  265  groupadd sales
  266  usermod -aG sales linda
  267  usermod -aG sales anna
  268  id anna
  269  id linda
  270  mkdir /data/sales
  271  mkdir /data/sales -p
  272  cd /data
  273  ls -l
  274  chgrp sales sales
  275  chmod 770 sales
  276  ls -l
  277  su - linda
  278  su - anna
  279  ip addr
  280  man ifconfig
  281  ip
  282  ip addr add dev ens33 10.0.0.10/24
  283  ip a
  284  ifconfig
  285  ifconfig -a
  286  historu
  287  history
  288  rpm -qf $(which ifconfig)
  289  rpm -ql net-tools
  290  rpm -ql net-tools | less
  291  yum remove net-tools
  292  cat /etc/redhat-release
  293  cat /etc/os-release
  294  history