RHCSA all days nov 21

   1  tar -cvzf /root/archive.tgz /etc
    2  ls -l
    3  tar -tvf archive.tgz
    4  cat /etc/dnsmasq.conf | sed '/^$/d' | sort
    5  cat /etc/dnsmasq.conf | sed '/^$/d' | sort > /var/tmp/dnslines.txt
    6  useradd bob
    7  mkdir /root/usersfiles; find / -user bob -exec cp {} /root/userfiles/ \;
    8  mkdir /root/userfiles; find / -user bob -exec cp {} /root/userfiles/ \;
    9  ls userfiles/
   10  ls -Ra userfiles/
   11  dnf install -y git
   12  vim countdown
   13  ./countdown 12
   14  ls -l
   15  chmod +x countdown
   16  ./countdown 12
   17  less /etc/passwd
   18  id bob
   19  su - bob
   20  id student
   21  visudo
   22  vim /etc/login.defs
   23  passwd bob
   24  grep bob /etc/shadow
   25  vim /etc/login.defs
   26  useradd whoeve3r
   27  passwd whoeve3r
   28  tail -5 /etc/shadow
   29  ls /etc/skel
   30  ls -a /etc/skel
   31  ls -a /home/bob
   32  passwd --help | less
   33  passwd -l bob
   34  tail -5 /etc/shadow
   35  chage --help
   36  chage -l bob
   37  groupadd dudes
   38  usermod -aG dudes bob
   39  id bob
   40  grep bob /etc/passwd
   41  grep bob /etc/group
   42  id bob
   43  passwd -S
   44  passwd -S bob
   45  vim /etc/ssh/sshd_config
   46  ls -l /home
   47  ls -l /etc/hosts
   48  mkdir -p /data/sales
   49  cd /data
   50  ls -l
   51  groupadd sales
   52  usermod -aG sales bob
   53  id
   54  chgrp sales /data/sales
   55  ls -l
   56  chmod 770 sales
   57  ls -l
   58  history
   59  cd
   60  useradd linda
   61  cd /home/linda
   62  vim runme
   63  chmod +x runme
   64  su - linda
   65  chmod u+s runme
   66  ls -l
   67  find / -perm /4000 2>/dev/null
   68  find / -perm /4000 -exec ls -l {} \; 2>/dev/null
   69  ls -l /etc/shadow
   70  #find / -perm /4000 -exec ls -l {} \; 2>/dev/null
   71  pwd
   72  touch removeme
   73  su - linda
   74  touch writeme
   75  su - linda
   76  cd
   77  ./countdown 12
   78  man find
   79  find / -perm /6000 -exec ls {} \;
   80  find / -perm /6000 -exec ls -l {} \;
   81  for i in find / -perm /4000;
   82  find / -perm /6000 -exec ls -l {} \;
   83  find / -perm /6000
   84  for i in find / -perm /4000 2>/dev/null; do ls -l $i; done
   85  for i in $(find / -perm /4000); do ls -l $i; done
   86  strace -c for i in $(find / -perm /4000); do ls -l $i; done
   87  strace -c "for i in $(find / -perm /4000); do ls -l $i; done"
   88  vim countdown
   89  ./countdown 1
   90  vim countdown
   91  ./countdown 5
   92  vim countdown
   93  history
   94  strace -f /bin/bash -c 'for i in $(find / -perm /4000); do ls -l $i; done'
   95  strace -c -f /bin/bash -c 'for i in $(find / -perm /4000); do ls -l $i; done'
   96  strace -c find / -perm /6000 -exec ls -l {} \;
   97  strace -c -f /bin/bash -c 'for i in $(find / -perm /4000); do ls -l $i; done'
   98  strace -c -f find / -perm /6000 -exec ls -l {} \;
   99  grep sales /etc/group
  100  useradd -aG sales linda
  101  usermod -aG sales linda
  102  grep sales /etc/group
  103  cd /data
  104  ls -l
  105  su - bob
  106  su - linda
  107  chmod g+s sales
  108  ls -l
  109  su - bob
  110  su - linda
  111  chmod +t /data/sales
  112  ls -l
  113  su - linda
  114  chown linda sales
  115  ls -l
  116  su - linda
  117  history
  118  cd
  119  ./countdown 10
  120  vim countdown
  121  ./countdown 10
  122  groupadd students
  123  groupadd profs
  124  vim /etc/login.defs
  125  groupadd -G students lisa
  126  useradd -G students lisa
  127  usermod -aG students linda
  128  useradd -G profs anna
  129  useradd -G profs anouk
  130  mkdir -p /data/profs /data/students
  131  cd /data
  132  chgrp students students
  133  chgrp profs profs
  134  chmod 3770 profs
  135  chmod 3770 students/
  136  ls -l
  137  chown anna students/
  138  chown anna profs
  139  ls -l
  140  cd
  141  ./countdown 13
  142  lsblk
  143  poweroff
  144  man find
  145  useradd --help
  146  passwd --help
  147  lsblk
  148  fdisk /dev/sda
  149  lsblk
  150  mkfs.xfs /dev/sda3
  151  mkdir /files
  152  vim /etc/fstab
  153  mount -a
  154  vim /etc/fstab
  155  mount -a
  156  lsblk
  157  mount
  158  mount | wc
  159  mount | grep '^/'
  160  lsblk
  161  history
  162  man test
  163  vim hintscript.sh
  164  chmod +x hintscript.sh
  165  ./hintscript.sh
  166  vim hintscript.sh
  167  lsblk
  168  df -h
  169  dd if=/dev/zero of=/root/diskfile.img bs=1M count=8192
  170  du -h diskfile.img
  171  losetup -fP diskfile.img
  172  losetup -a
  173  fdisk -l /dev/loop0
  174  lsblk
  175  xxd -l 512 /dev/sda | less
  176  fdisk /dev/sda
  177  fdisk -l /dev/sda
  178  cat /proc/partitions
  179  reboot
  180  cat /proc/partitions
  181  mkdir /xfsfiles
  182  mkdir /ext4files
  183  mkfs.xfs /dev/sda5
  184  mkfs.ext4 /dev/sda6
  185  vim /etc/fstab
  186  mount -a
  187  lsblk
  188  fdisk /dev/sda
  189  vim /etc/fstab
  190  reboot
  191  fdisk -l /dev/sda
  192  touch aa
  193  mount -o remount,rw /
  194  history
  195  vim /etc/fstab
  196  reboot
  197  blkid
  198  vim /etc/fstab
  199  tune2fs -L cow /dev/sda5
  200  blkid
  201  vim /etc/fstab
  202  reboot
  203  xxd -l 512 /dev/sda
  204  cat /dev/sda | less
  205  mkfs.ext4 --help | less
  206  xfs_admin --help
  207  tune2fs --help
  208  cd /data
  209  ls -l
  210  su - anna
  211  man setfacl
  212  setfacl -R -m g:profs:rX students
  213  ls students/
  214  ls students/ -l
  215  ls -l
  216  getfacl students/
  217  getfacl students/student1
  218  su - anna
  219  getfacl students/newfile
  220  ls -lZ
  221  setfacl -m d:g:profs:rx students
  222  getfacl students/
  223  su - anna
  224  getfacl students/newfile2
  225  history
  226  sleep 180; /root/countdown 12
  227  history
  228  df -h
  229  poweroff
  230  lsblk
  231  fdisk /dev/sdb
  232  lsblk
  233  pvcreate --help
  234  pvcreate /dev/sdb1
  235  pvs
  236  vgcreate --help | less
  237  vgcreate -s 8M vgdata /dev/sdb1
  238  man lvcreate
  239  lvcreate -L 1G -n lvdata vgdata
  240  pvs
  241  vgs
  242  lvs
  243  mkfs.xfs /dev/vgdata/lvdata
  244  mkdir /lvdata
  245  vim /etc/fstab
  246  mount -a
  247  mount
  248  tail -1 /etc/fstab
  249  ls -l /dev/vgdata/lvdata /dev/mapper/vgdata-lvdata
  250  history
  251  df -h
  252  lvs
  253  vgs
  254  vgextend --help | less
  255  vgextend rhel /dev/sdb2
  256  vgs
  257  lvextend --help | less
  258  lvextend -r -l +100%FREE /dev/rhel
  259  lvextend -r -l +100%FREE /dev/rhel/root
  260  df -h
  261  lvs
  262  vgs
  263  pvs
  264  lvdisplay
  265  lvs
  266  history
  267  ./countdown 15
  268  dd if=/dev/sr0 of=/rhel8.iso bs=1M
  269  df -h
  270  mkdir /repo
  271  vim /etc/fstab
  272  mount -a
  273  mount
  274  cd /repo
  275  ls
  276  cd BaseOS/
  277  ls
  278  ls Packages/
  279  cd /
  280  lsblk
  281  yum repolist
  282  cd /etc/yum.repos.d/
  283  ls
  284  cat redhat.repo
  285  rm -f *.repo
  286  vim base.repo
  287  vim appstream.repo
  288  yum repolist
  289  yum search nmap
  290  yum install nmap-ncat
  291  yum provides */yum-config-manager
  292  man yum.conf
  293  yum module list
  294  yum module provides podman
  295  yum module info container-tools
  296  yum module info postgress
  297  yum module info postgres
  298  yum module info postgresql | less
  299  yum module list postgresql
  300  yum module install postgresql:9.6/client
  301  yum install httpd
  302  ls -l $(which yum) $(which dnf)
  303  cd
  304  ./countdown 15
  305  lslbk
  306  lsblk
  307  history
  308  ip a
  309  ip route
  310  cat /etc/resolv.conf
  311  ping 8.8.8.8
  312  ping nu.nl
  313  man ifconfig
  314  ip addr add dev ens160 10.0.0.10/24
  315  ip a
  316  ifconfig
  317  ifconfig --all
  318  ifconfig -a
  319  ifconfig /all
  320  rpm -qf $(which ifconfig)
  321  yum remove net-tools
  322  ip route del default via 192.168.29.2
  323  ip route show
  324  ping 8.8.8.8
  325  ip route add default via 192.168.29.1
  326  ping 8.8.8.8
  327  ip route
  328  ip route del default via 192.168.29.
  329  ip route add default via 192.168.29.2
  330  ping 8.8.8.8
  331  ip a
  332  systemctl status NetworkManager
  333  cd /etc/sysconfig/network-scripts/
  334  ls
  335  vim ifcfg-ens160
  336  nmtui
  337  ip a
  338  ping 8.8.8.8
  339  ping nu.nl
  340  nmtui
  341  nmcli connection show
  342  nmcli connection add ipv4.addresses 10.0.0.10/24
  343  nmcli connection add ipv4.addresses 10.0.0.10/24 type ethernet
  344  nmcli con show
  345  mount /dev/sr0 /mnt
  346  ls /mnt/
  347  history
  348  su --help
  349  su linda -c touch /tmp/linda
  350  su linda -c "touch /tmp/linda"
  351  ls -l /tmp/linda
  352  systemctl status tuned
  353  tuned-adm --help
  354  tuned-adm list
  355  tuned-adm profile latency-performance
  356  tuned-adm list
  357  sysctl -a
  358  sysctl -a | wc
  359  free -m
  360  swapon -a
  361  swapon -s
  362  fdisk /dev/sda
  363  lsblk
  364  free -m
  365  mkswap --help | less
  366  mkswap -L SWAP /dev/sda7
  367  vim /etc/fstab
  368  systemctl isolate multi-user.target
  369  blkid
  370  blkid | grep SWAP
  371  blkid | grep SWAP | awk '{ print $3 }'
  372  blkid | grep SWAP | awk '{ print $3 }' >> /etc/fstab
  373  vim /etc/fstab
  374  reboot
  375  mount -o remount,rw /
  376  mount -o remount,rw /
  377  systemctl list-units
  378  cd /boot
  379  ls
  380  cd ..
  381  systemctl start rescue.target
  382  systemctl list-units
  383  cd /boot
  384  ls
  385  cd ..
  386  mount -a
  387  systemctl start default.target
  388  cat /etc/fstab
  389  systemctl list-units -t mount
  390  cd /run/systemd/generator
  391  ls
  392  cat files.mount
  393  cd /etc/systemd/system/
  394  vim files.mount
  395  systemctl list-dependencies
  396  vim files.mount
  397  vim /etc/fstab
  398  vim files.mount
  399  systemctl enable files.mount
  400  reboot
  401  mount
  402  systemctl status files.mount
  403  lsblk
  404  df -h
  405  journalctl
  406  cd /var/log
  407  ls
  408  mkdir journal
  409  ls journal
  410  systemctl daemon-reload
  411  ls journal
  412  vim dglab.txt
  413  poweroff
  414  yum install vdo kmod-kvdo
  415  man vdo
  416  vdo create --name=vdo1 --device=/dev/sde --vdoLogicalSize=1T
  417  mkfs.xfs -K /dev/mapper/vdo1
  418  cat /etc/fstab
  419  cd /usr/share/doc/vdo/examples/
  420  ls
  421  cd systemd/
  422  ls
  423  mkdir /myvdo
  424  cp VDO.mount.example /etc/systemd/system/myvdo.mount
  425  cd /etc/systemd/system/
  426  vim myvdo.mount
  427  systemctl enable --now myvdo.mount
  428  systemctl status myvdo.mount
  429  mount | grep vdo
  430  reboot
  431  mount | grep vdo
  432  man lvmvdo
  433  vdostats --human-readable
  434  history
  435  reboot
  436  vim /etc/default/grub
  437  grub2-mkconfig -o /boot/grub2/grub.cfg
  438  reboot
  439  history
  440  compgen --help
  441  compgen -u
  442  compgen -g
  443  hostnamectl set-hostname rhcsa.example.com
  444  exit
  445  showmount -e 192.168.29.129
  446  mount 192.168.29.129:/rhel9 /mnt
  447  mount
  448  grep 1004 /etc/paswwd
  449  grep 1004 /etc/passwd
  450  cd /mnt
  451  touch hello
  452  ls -l
  453  cd /
  454  showmount -e 192.168.29.129
  455  dnf install -y autofs
  456  cd /etc
  457  vim auto.master
  458  vim auto.misc
  459  ls /
  460  vim auto.master
  461  vim auto.myfiles
  462  ls /
  463  systemctl restart autofs
  464  ls /
  465  cd /myfiles
  466  ls -a
  467  cd data
  468  pwd
  469  ls
  470  mount
  471  grep myfiles /etc/auto.master
  472  cat /etc/auto.myfiles
  473  showmount -e 192.168.29.129
  474  systemctl status autofs
  475  echo /myfiles *(rw,no_root_squash) > /etc/exports
  476  #systemctl start nfs-server
  477  #yum install nfs-utils
  478  #/home/ldap/ldapuser1
  479  vim /etc/auto.master
  480  vim /etc/auto.ldap
  481  systemctl restart autofs
  482  cd /home/
  483  ls -a
  484  cd ldap
  485  ls -a
  486  cd ldapuser1
  487  man autofs
  488  man 5 autofs
  489  cat /etc/auto.ldap
  490  grep ldap /etc/auto.master
  491  cd
  492  podman run ubuntu
  493  podman ps
  494  podman ps -a
  495  podman run nginx
  496  podman run docker.io/library/nginx
  497  podman run -d docker.io/library/nginx
  498  podman ps
  499  history
  500  ./countdown 12
  501  history
  502  podman ps
  503  vim /etc/containers/registries.conf
  504  podman login registry.access.redhat.com
  505  podman login registry.redhat.io
  506  podman login docker.io
  507  podman run nginx -d
  508  podman run -d nginx
  509  podman run -d bitnami/nginx
  510  ./countdown 3
  511  podman pull registry.access.redhat.com/ubi8.ubi
  512  podman pull registry.access.redhat.com/ubi8/ubi
  513  podman run -it ubuntu
  514  podman ps
  515  find / -name cee7e423eeda
  516  find / -name "cee7e423eeda*"
  517  podman info
  518  podman images
  519  podman image inspect registry.access.redhat.com/ubi8/ubi | less
  520  podman run -d -p 8000:80 nginx
  521  curl localhost:8000
  522  podman port -a
  523  firewall-cmd --add-port=8000/tcp --permanent
  524  firewall-cmd --reload
  525  firewall-cmd --list-all
  526  podman run mariadb
  527  podman ps -a
  528  podman logs cool_mirzakhani
  529  podman run -d --name mydb -e MYSQL_ROOT_PASSWORD=password -p 3306:3306 mariadb
  530  podman ps
  531  podman exec romantic_tesla uname -r
  532  podman exec -it romantic_tesla bash
  533  podman exec -l uname -r
  534  ./countdown 12
  535  podman images
  536  podman image list
  537  podman ps
  538  podman ps -w
  539  podman ps -o wide
  540  podman inspect romantic_tesla | less
  541  ip a
  542  exit
  543  ps fax | less
  544  ps faux | less
  545  ./countdown 35
  546  ln -s /etc/hosts /tmp/myhosts
  547  ls -l /tmp/myhosts
  548  cd /etc/skel/
  549  touch myfile
  550  ls -a
  551  cd ..
  552  vim login.defs
  553  find / -size +100M > /tmp/bigfiles
  554  dd if=/dev/zero of=/bigfile bs=1000 count=100001
  555  find / -size +100M > /tmp/bigfiles
  556  less /tmp/bigfiles
  557  grep bigf /tmp/bigfiles
  558  cd
  559  vgs
  560  lvcreate -n lv500 -L 500M vgdata
  561  mkfs.ext3 -L myvolume /dev/vgdata/lv500
  562  mkdir /myvol
  563  vim /etc/fstab
  564  mount -a
  565  mount
  566  echo $(( 1024 * 1024 ))
  567  echo $(( 100 * 1024 * 1024 ))
  568  dnf provides */seinfo
  569  dnf install -y setools-console
  570  groupadd profs
  571  useradd -G profs anna
  572  usermod -aG profs anna
  573  chmod anna:profs /data/profs
  574  chown anna:profs /data/profs
  575  chmod 1770 /data/profs
  576  systemctl status crond
  577  crontab -e
  578  journalctl
  579  grep hour /var/log/messages
  580  history

STUDENT HISTORY
[student@rhcsa ~]$ history
    1  sudo -i
    2  sudo mkdir /opt/dbfiles
    3  sudo chmod o+w /opt/dbfiles
    4  podman run -d --name mydbase -v /opt/dbfiles:/var/lib/mysql:Z -e MYSQL_USER=bob -e MYSQL_PASSWORD=password -e MYSQL_DATABASE=books -e MYSQL_ROOT_PASSWORD=password registry.redhat.io/rhel8/mariadb-103
    5  podman login registry.redhat.io
    6  podman run -d --name mydbase -v /opt/dbfiles:/var/lib/mysql:Z -e MYSQL_USER=bob -e MYSQL_PASSWORD=password -e MYSQL_DATABASE=books -e MYSQL_ROOT_PASSWORD=password registry.redhat.io/rhel8/mariadb-103
    7  podman ps
    8  podman ps -a
    9  podman logs mydbase
   10  sudo ls -ldZ /opt/dbfiles
   11  sudo chown $(id -un) /opt/dbfiles
   12  sudo ls -ldZ /opt/dbfiles
   13  podman run -d --name mydbase -v /opt/dbfiles:/var/lib/mysql:Z -e MYSQL_USER=bob -e MYSQL_PASSWORD=password -e MYSQL_DATABASE=books -e MYSQL_ROOT_PASSWORD=password registry.redhat.io/rhel8/mariadb-103
   14  podman run -d --name mydbasee -v /opt/dbfiles:/var/lib/mysql:Z -e MYSQL_USER=bob -e MYSQL_PASSWORD=password -e MYSQL_DATABASE=books -e MYSQL_ROOT_PASSWORD=password registry.redhat.io/rhel8/mariadb-103
   15  podman ps
   16  sudo ls -ldZ /opt/dbfiles
   17  history
   18  sudo loginctl show-user linda
   19  sudo loginctl show-user student
   20  sudo loginctl --help
   21  sudo useradd linda
   22  sudo passwd linda
   23  sudo loginctl enable-linger linda
   24  sudo loginctl show-user linda
   25  ssh linda@localhost
   26  sudo reboot
   27  ssh [email protected]
   28  sudo -i
   29  history

LINDA HISTORY
    1  cat runme
    2  ls -l runme
    3  exit
    4  ls -l
    5  rm -f removeme
    6  ls -l
    7  ls -ld .
    8  exit
    9  echo hello > writeme
   10  ls -l
   11  vim writeme
   12  ls -l
   13  exit
   14  cd /data/sales
   15  echo linda > bobfile
   16  exit
   17  echo hello >> /data/sales/newfile
   18  cd /data/sales/
   19  ls -l
   20  rm -f bobfile
   21  ls -ld .
   22  exit
   23  cd /data/sales/
   24  rm -f *
   25  exit
   26  cd /data/sales
   27  rm -f newfile
   28  exit
   29  ls -a
   30  ls .config/
   31  mkdir -p .config/systemd/user
   32  cd .config/systemd/user/
   33  podman run -d --name mynginx -p 8081:80 nginx
   34  podman login
   35  podman run -d --name mynginx -p 8081:80 nginx
   36  podman run -d --name mynginx -p 8081:80 docker.io/library/nginx
   37  podman ps
   38  podman generate systemd --name mynginx --files
   39  vim container-mynginx.service
   40  systemctl --user daemon-reload
   41  systemctl --user enable container-mynginx.service
   42  systemctl --user status container-mynginx.service
   43  exit
   44  historuy
   45  history