linfun day2 april21

[root@localhost data]# history
    1  exit
    2  cd /
    3  cd/
    4  ls
    5  cd /usr
    6  ls
    7  cd /
    8  ls -ld /bin /sbin
    9  cd /usr/local/
   10  ls
   11  cd /var
   12  ls
   13  cd log
   14  ls
   15  ls -lrt
   16  cd /boot
   17  ls
   18  cd
   19  exit
   20  tar -cvf my_archive.tar /home
   21  ls -l my_archive.tar
   22  tar -tvf my_archive.tar
   23  tar -xvf my_archive.tar
   24  ls
   25  rm -fr home
   26  tar -czvf my_archive.tar.gz /home
   27  tar -cjvf my_archive.tar.bz /home
   28  tar -cJvf my_archive.tar.xz /home
   29  ls -l
   30  tar -xvf my_archive.tar -C /tmp/
   31  ls /tmp
   32  echo $PATH
   33  export PATH=$PATH:/usr/local/bin
   34  countdown 12
   35  head /etc/passwd
   36  head -5 /etc/passwd
   37  tail /etc/passwd
   38  head -5 /etc/passwd | tail -1
   39  echo 1 > textfile
   40  echo 2 >> textfile
   41  cat textfile
   42  tac textfile
   43  cd /etc
   44  grep 'lisa' *
   45  grep 'lisa' * 2>/dev/null
   46  ps aux | grep ssh
   47  ps aux | grep -i ssh | grep -v grep
   48  grep root *
   49  grep root * 2>/dev/null
   50  grep -l root * 2>/dev/null
   51  grep -lR root * 2>/dev/null
   52  grep root /etc/passwd
   53  grep -A 5 root /etc/passwd
   54  cd
   55  vim regfile
   56  grep 'bit' regfile
   57  grep 'bi?t' regfile
   58  grep -E 'bi?t' regfile
   59  vim regfile
   60  grep anna regfile
   61  grep '^anna' regfile
   62  grep 'anna$' regfile
   63  grep '^anna$' regfile
   64  vim regfile
   65  grep 'anna\b' regfile
   66  grep 'bi*t' regfile
   67  grep 'b.*t' regfile
   68  grep 'b.+t' regfile
   69  grep -E 'b.+t' regfile
   70  grep -E 'b.?t' regfile
   71  grep -E 'b.\{3\}t' regfile
   72  grep 'b.\{3\}t' regfile
   73  egrep 'b.\{3\}t' regfile
   74  man semanage-fcontext
   75  man grep
   76  cut -f 1 -d : /etc/passwd
   77  cut -f 1 -d : /etc/passwd | head
   78  tail /etc/passwd
   79  cut -f 1 -d : /etc/passwd | head | sort
   80  cut -f 1 -d : /etc/passwd | head | sort | tr [a-z] [A-Z]
   81  cut -f 1 -d : /etc/passwd | head | sort | tr [a-m] [n-z]
   82  cut -f 1 -d : /etc/passwd | head | sort | tr [:lower:] [:upper:]
   83  sed -n 5p /etc/passwd
   84  ls
   85  sed -i s/bit/not/g regfile
   86  cat regfile
   87  sed -i -e '2d' regfile
   88  sed -i -e '13d' regfile
   89  echo hello >afile
   90  echo hello >bfile
   91  echo hello >cfile
   92  echo hello >dfile
   93  cat *file
   94  for i in *file; do sed -i 's/hello/bonjour/g' $i; done
   95  cat cfile
   96  awk -F : '{ print $4 }' /etc/passwd
   97  awk -F : '{ print $3 }' /etc/passwd
   98  awk -F : '/linda/ { print $3 }' /etc/passwd
   99  awk -F : '$3 > 999 { print $1 }' /etc/passwd
  100  countdown 13
  101  sort < /etc/services
  102  grep -R root /proc
  103  grep -R root /etc 2>/dev/null
  104  grep -R root /etc &>/dev/null
  105  ps aux | tee psfile | grep ssh
  106  ls
  107  cat psfile
  108  find / -xtype l
  109  history
  110  history | grep awk
  111  awk -F : '{ print $4 }' /etc/passwd
  112  ssh sander@192.168.50.136
  113  history
  114  history -d 100
  115  ls -a
  116  less .bash_history
  117  history -w
  118  less .bash_history
  119  yum install bash-completion
  120  echo $HISTSIZE
  121  env
  122  LANG=ru_RU.UTF-8
  123  ls --help
  124  echo $PATH
  125  bash
  126  history | grep local
  127  alias
  128  alias help='echo how can i help you'
  129  help
  130  vim /etc/bashrc
  131  su -
  132  sander
  133  echo 'hello
  134  cd /etc/profile.d/
  135  l;s
  136  ls
  137  cd
  138  vim .bash_profile
  139  vim .bash_logout
  140  sleep 1000
  141  bg
  142  sleep 900 &
  143  jobs
  144  fg
  145  while true; do true; done &
  146  jobs
  147  top
  148  ps fax
  149  ps -e -o pid,args --forest
  150  ps -C java -L -o pid,tid,pcpu,state,nlwp,args
  151  ps aux
  152  ps aux --sort pmem | less
  153  dd if=/dev/zero of=/dev/null &
  154  top
  155  cd /sys
  156  ls
  157  cd bus
  158  ls
  159  cd pu
  160  cd cpu
  161  ls
  162  cd devices/
  163  ls
  164  pwd
  165  ls cpu1
  166  cat cpu1/online
  167  echo 0 > cpu1/online
  168  lscpu
  169  top
  170  killall dd
  171  echo 1 > cpu1/online
  172  lscpu
  173  cd
  174  sleep 1000
  175  bg
  176  ps aux | grep sleep
  177  kill 51912
  178  countdown 12
  179  yum search nmap
  180  yum search seinfo
  181  yum provides */seinfo
  182  useradd anna
  183  su - anna
  184  groupadd sales
  185  usermod -aG sales anna
  186  id anna
  187  useradd -G sales lisa
  188  mkdir -p /data/sales
  189  cd /data
  190  ls
  191  ls -l
  192  chgrp sales sales
  193  ls -l
  194  chmod 770 sales
  195  su - lisa
  196  ip a
  197  ssh sander@192.168.50.136
  198  ip a
  199  ifconfig
  200  man ifconfig
  201  ip addr add dev ens33 10.0.0.10/24
  202  ip a
  203  ifconfig
  204  ip route show
  205  ping nu.nl
  206  vim /etc/resolv.conf
  207  nmtui
  208  lsblk
  209  ssh sander@192.168.50.136
  210  yum install -y vsftpd
  211  systemctl status vsftpd
  212  systemctl start vsftpd
  213  systemctl status vsftpd
  214  systemctl enable vsftpd
  215  systemctl status vsftpd
  216  journalctl
  217  journalctl -u sshd
  218  journalctl --dmesg
  219  history
  116  history
  117  alias
  118  man ls
  119  dircolors --helo
  120  dircolors --help
  121  sudo -i
  122  vim countdown
  123  countdown 12
  124  echo $PATH
  125  ./countdown 12
  126  ls -l countdown
  127  chmod +x countdown
  128  ls -l countdown
  129  ./countdown 12
  130  cp countdown /usr/local/bin/
  131  ls -ld /usr/local/bin
  132  sudo cp countdown /usr/local/bin/
  133  countdown 0
  134  history
  135  cat countdown
  136  cd /var
  137  ls -l log/messages
  138  cd cache/
  139  ls
  140  pwd
  141  ls -l ..
  142  ls -l ../var/messages
  143  ls -l ../log/messages
  144  ls -l /var/log/messages
  145  ls ../../usr/local/bin/
  146  pwd
  147  ls /usr/local/bin/
  148  cd
  149  cp countdown bin
  150  ls -l
  151  rm bin
  152  cp countdown bin/
  153  mkdir bin
  154  cp countdown bin/
  155  mkdir /tmp/sander
  156  cp -a ~/.* /tmp/sander/
  157  ls /tmp/sander
  158  ls -a /tmp/sander
  159  cp /etc/* /tmp/sander/
  160  cp -R /etc/* /tmp/sander/
  161  cp -R /etc/* /tmp/sander/ 2> /dev/null
  162  echo hello
  163  echo hello > hellofile
  164  cat hellofile
  165  ls
  166  mv hello ola
  167  ls
  168  mv ola /tmp/
  169  ls
  170  ls -l
  171  cat hellofile
  172  ls -il hellofile
  173  ln hellofile olafile
  174  ls -il hellofile olafile
  175  echo ola >> olafile
  176  ls -il hellofile olafile
  177  cat hellofile
  178  ln -s olafile bonjourfile
  179  ls -il hellofile olafile bonjourfile
  180  cat bonjourfile
  181  echo bonjour >> bonjourfile
  182  ls -il hellofile olafile bonjourfile
  183  rm olafile
  184  ls -il hellofile olafile bonjourfile
  185  cat bonjourfile
  186  ln hellofile olafile
  187  ls -il hellofile olafile bonjourfile
  188  sudo find / -name "hosts"
  189  sudo find / -name "*hosts*"
  190  tail /etc/passwd
  191  su - linda
  192  find / -user linda
  193  sudo find / -user linda 2>/dev/null
  194  sudo find / -size +1G 2>/dev/null
  195  sudo mkdir /root/linda; sudo find / -user linda -exec cp {} /root/linda/ \;
  196  ls -la /root/linda
  197  sudo ls -la /root/linda/
  198  sudo -i
  199  history