linfun june22 day2

[root@linfun log]# history
    1  #cp -R /tmp/ .
    2  ls
    3  cp -R /tmp/ .
    4  ls
    5  ls tmp/
    6  rm -rf tmp/
    7  cp -R /tmp .
    8  ls
    9  cp /etc/hosts somedir/
   10  cp /etc/hosts somedir
   11  ls -l
   12  ls
   13  mv somedir myfile
   14  ls -l
   15  ls -il /etc/hosts
   16  ln /etc/hosts hardhosts1
   17  ln /etc/hosts hardhosts2
   18  ls -il /etc/hosts hardhosts1 hardhosts2
   19  echo hello >> /etc/hosts
   20  ls -il /etc/hosts hardhosts1 hardhosts2
   21  ln /etc etc
   22  ln -s /etc etc
   23  ls
   24  ls -l
   25  ls /boot
   26  ln /boot/vmlinuz-5.14.0-47.el9.x86_64 kernel
   27  ln -s /boot/vmlinuz-5.14.0-47.el9.x86_64 kernel
   28  ls
   29  ls -l
   30  cd /
   31  ls -l
   32  countdown 1
   33  cd
   34  ls -l\
   35  ls -l
   36  ln -s hardhosts1 symhost
   37  ls -il hardhosts1 symhost
   38  rm hardhosts1
   39  ls -il hardhosts1 symhost hardhosts2
   40  cat symhost
   41  lsblk
   42  findmnt
   43  find / -name "hosts"
   44  find / -name "*hosts*"
   45  useradd linda
   46  find / -user linda
   47  su - linda
   48  find / -user linda 2 > /dev/null
   49  find / -user linda 2> /dev/null
   50  find / -size +1G
   51  find / -size +1G 2>/dev/null
   52  mkdir /root/linda; find / -user linda -exec cp {} /root/linda \;
   53  ls linda/
   54  tar -cvf myarchive.tar /home
   55  ls -l
   56  ls
   57  tar -tvf myarchive.tar
   58  tar -xvf myarchive.tar
   59  ls
   60  tree home
   61  tar -czvf myarchive.tar.gz /home
   62  tar -cjvf myarchive.tar.bz2 /home
   63  tar -cJvf myarchive.tar.xz /home
   64  ls -l myarch*
   65  history
   66  countdown 1
   67  countdown 15
   68  mkdir -p /tmp/files/pictures /tmp/files/photos /tmp/files/videos
   69  cp /etc/[a-c]* /tmp/files/
   70  cd /tmp/files/
   71  ls
   72  mv [ab]* photos/
   73  mv c* videos/
   74  tree
   75  man find
   76  find /etc -size -1000c
   77  find /etc -size -1000c -exec cp {} pictures/ \;
   78  ls pictures/
   79  pwd
   80  ln -s /var var
   81  ls
   82  tar -czvf homes.tgz /home/
   83  cd ..
   84  mkdir archive
   85  cd archive/
   86  tar -xvf ../files/homes.tgz
   87  ls
   88  tree
   89  history
   90  cd
   91  which countdown
   92  nano /bin/countdown
   93  ls -l $(which vi) $(which vim)
   94  vimtutor
   95  vim myfile
   96  ls -l $(which vi)
   97  file /bin/vi
   98  file /bin/vim
   99  vim /bin/vi
  100  ls -l /usr/libexec/vi
  101  vim myfile
  102  less /etc/passwd
  103  more /etc/passwd
  104  head /etc/passwd
  105  head /etc/passwd -5
  106  head -5 /etc/passwd
  107  tail -5 /etc/passwd
  108  tail -f /var/log/messages
  109  cat /etc/passswd
  110  cat /etc/passwd
  111  tac /etc/passwd
  112  cd /etc
  113  grep linda *
  114  grep linda * 2> /dev/null
  115  ps aux
  116  ps aux | grep ssh
  117  ps aux | grep ssh | grep -v grep
  118  ps aux | grep SSH
  119  ps aux | grep -i SSH
  120  grep RootLogin /etc/ssh/sshd_config
  121  grep -A 5 -B 5 RootLogin /etc/ssh/sshd_config
  122  grep -l root * 2>/dev/null
  123  grep -lR root * 2>/dev/null
  124  cd
  125  vim texfile
  126  grep '^l' texfile
  127  grep '^a' texfile
  128  grep 'a' texfile
  129  grep 'a$' texfile
  130  vim texfile
  131  grep '^lea\b' texfile
  132  grep '^lea' texfile
  133  vim texfile
  134  grep 'b.t' texfile
  135  vim texfile
  136  grep 'b.t' texfile
  137  grep 'b.*t' texfile
  138  grep 'bo+t' texfile
  139  grep -E 'bo+t' texfile
  140  grep -E 'bo*t' texfile
  141  grep -E 'bo?t' texfile
  142  grep -E 'bo\{3\}t' texfile
  143  grep 'bo\{3\}t' texfile
  144  history
  145  man semanage-fcontext
  146  countdown 13
  147  history
  148  cut -f 1 /etc/passwd
  149  cut -f 1 -d : /etc/passwd
  150  cut -f 1 -d : /etc/passwd | sort
  151  cut -f 3 -d : /etc/passwd | sort
  152  cut -f 3 -d : /etc/passwd | sort -n
  153  echo hello | tr a-z A-Z
  154  echo hello | tr [:lower:] [:upper:]
  155  echo hello | tr a-k l-z
  156  sed -n 5p /etc/passwd
  157  sed -i s/bananna/apple/ texfile
  158  grep apple texfile
  159  cat texfile
  160  sed -i -e '2d' texfile
  161  cat texfile
  162  vim a.conf
  163  vim b.conf
  164  vim c.conf
  165  for i in *conf; do sed -i 's/apple/orange/g' $i; done
  166  cat c.conf
  167  awk -F : '{ print $4 }' /etc/passwd
  168  awk -F '/linda/ { print $4 }' /etc/passwd
  169  awk -F : '/linda/ { print $4 }' /etc/passwd
  170  awk -F : '$3 > 999 { print $1 }' /etc/passwd
  171  vim /etc/passwd
  172  history
  173  sort < /etc/services
  174  sort /etc/services
  175  ls > lsfile
  176  cat lsfile
  177  who > lsfile
  178  cat lsfile
  179  ls >> lsfile
  180  cat lsfile
  181  grep -R oot /proc 2>/dev/null
  182  grep -R oot /etc &> myfile
  183  ps aux | tee psfile | grep ssh
  184  less psfile
  185  history
  186  tail /etc/shadow
  187  echo password | passwd --stdin linda
  188  tail /etc/shadow
  189  history
  190  #history -d 187
  191  cat c.conf
  192  sort /etc/services
  193  grep -R oot /etc &> myfile
  194  users
  195  dnf install bash-completion
  196  #apt install bash-completion
  197  env
  198  echo $PATH
  199  echo $HISTSIZE
  200  echo $HISTFILESIZE
  201  export HISTFILESIZE=5000
  202  vim /bin/countdown
  203  countdown 1
  204  countdown 12
  205  visudo
  206  su - linda
  207  grep linda /etc/sudoers
  208  dd if=/dev/zero of=/dev/null &
  209  top
  210  dd if=/dev/zero of=/dev/null &
  211  ps aux | grep dd
  212  kill -9 42800
  213  ls -l $(which yum)
  214  ls -l $(which dnf)
  215  dnf repolist
  216  dnf search nmap
  217  dnf install nmap
  218  dnf remove bash
  219  dnf provides */Containerfile
  220  dnf install buildah-tests-1
  221  dnf install buildah-tests
  222  groupadd sales
  223  id linda
  224  usermod -aG sales linda
  225  id linda
  226  usermod -G wheel linda
  227  id linda
  228  usermod -aG sales linda
  229  id linda
  230  su - linda
  231  ls -l /etc/hosts
  232  id linda
  233  mkdir -p /data/sales
  234  cd /data
  235  ls -l
  236  chown linda:sales sales
  237  ls -l
  238  chmod g+w sales
  239  ls -l
  240  chmod 770 sales
  241  ls -l
  242  useradd -G sales jenny
  243  su - jenny
  244  useradd -G sales -m lisa
  245  cd /home/lisa/
  246  touch rootfile
  247  su - lisa
  248  systemctl status NetworkManager
  249  cd
  250  ip addr
  251  ifconfig
  252  ip addr add dev ens33 10.0.0.10/24
  253  ip a
  254  ifconfig
  255  man ifconfig
  256  ip route show
  257  ping nu.nl
  258  lslbk
  259  lsblk
  260  ls /dev/sd*
  261  lsblk
  262  umount /dev/sdb1
  263  lsblk
  264  mount /dev/sdb1 /mnt
  265  ls /mnt
  266  findmnt
  267  umount /mnt
  268  journalctl
  269  cd /var/log
  270  ls -lrt
  271  tail -f messages
  272  history