RHCSA july23 all days

    1  ls
    2  exit
    3  tar cvzf archive.tgz /etc
    4  tar tvf archive.tgz
    5  history
    6  grep -v '^$' /etc/dnsmasq.conf
    7  grep -v '^$' /etc/dnsmasq.conf | sort
    8  grep -v '^$' /etc/dnsmasq.conf | sort > /var/tmp/dnslines.txt
    9  useradd bob
   10  find / -user bob
   11  find / -user bob -type f
   12  mkdir /root/userfiles; find / -user bob -type f -exec cp {} /root/userfiles/ \;
   13  ls -al /root/userfiles/
   14  history
   15  ls -ld /etc/sudo*
   16  visudo
   17  vim /etc/sudoers.d/bob
   18  tail -1 /etc/passwd
   19  su - bob
   20  passwd bob
   21  su - bob
   22  cat /etc/sudoers.d/bob
   23  id student
   24  history
   25  visudo
   26  exit
   27  history
   28  su - lisa
   29  grep lisa /etc/sudoers
   30  cat /etc/passwd
   31  head /etc/passwd
   32  useradd --help | less
   33  useradd bill -p password
   34  tail -1 /etc/shadow
   35  tail -5 /etc/shadow
   36  echo password | passwd --stdin bill
   37  tail -5 /etc/shadow
   38  vim /etc/login.defs
   39  useradd -p password peter
   40  su - student
   41  cd /etc/skel/
   42  ls -a
   43  touch hellefile
   44  useradd bea
   45  ls -l /home/bea
   46  ls -al /home/bea
   47  id lisa
   48  id student
   49  groupadd sales
   50  usermod -aG sales lisa
   51  usermod --help
   52  usermod -G wheel lisa
   53  id lisa
   54  usermod -aG sales lisa
   55  id lisa
   56  exit
   57  chage --help
   58  chage -l lisa
   59  chage -M 99 lisa
   60  chage -l lisa
   61  chage lisa
   62  /home/student/countdown 15
   63  vim /etc/login.defs
   64  cd /etc/skel/
   65  touch newfile
   66  vim /etc/default/useradd
   67  for i in anna anouk lisa linda; do useradd $i; done
   68  for i in anna anouk lisa linda; do echo password | passwd --stdin $i; done
   69  groupadd profs
   70  groupadd students
   71  usermod -aG profs anouk
   72  usermod -aG profs anna
   73  usermod -aG students linda
   74  usermod -aG students lisa
   75  ls -l /etc/hosts
   76  cd /tmp
   77  echo hello > hellofile
   78  chown linda hellofile
   79  chmod 077 hellofile
   80  ls -l hellofile
   81  su - linda
   82  cd
   83  cd /home/linda
   84  touch lindafile
   85  ls -l lindafile
   86  echo linda > lindafile
   87  su - linda
   88  ls -l
   89  chmod 640 lindafile
   90  su - linda
   91  cd
   92  cd /tmp
   93  mkdir testdir
   94  touch testdir/file{1..10}
   95  ls -l testdir/
   96  chmod --helo
   97  chmod --hel
   98  chmod -R +x testdir/
   99  ls -l testdir/
  100  chmod -R -x testdir/
  101  mkdir testdir/subdir
  102  chmod -R +X testdir/
  103  ls -ld testdir/
  104  ls -l testdir/
  105  cd
  106  mkdir -p /data/profs /data/students
  107  ls -l /data
  108  chown :profs /data/profs
  109  ls -l /data
  110  chgrp students /data/students
  111  ls -l /data
  112  chmod 770 /data/students
  113  ls -l /data
  114  chmod g+w,o-rx /data/profs
  115  ls -l /data
  116  su - anna
  117  chmod g+s /data/profs
  118  ls -l /data
  119  su - anna
  120  su - anouk
  121  chmod +t /data/profs
  122  ls -l /data
  123  su - anouk
  124  umask
  125  /home/student/countdown 15
  126  mkdir -p /data/students /data/profs
  127  ls /data
  128  cd /data
  129  chmod 770 *
  130  ls -l
  131  umask
  132  cd profs
  133  umask 002
  134  touch rootfile
  135  ls -l rootfile
  136  lsblk
  137  poweroff
  138  vim /etc/fstab
  139  fdisk -l
  140  touch ff
  141  mount -o remount,rw /
  142  touch ff
  143  vim /etc/fstab
  144  blkid
  145  blkid | grep sda5 | awk '{ print $2 '}
  146  blkid | awk '/sda5/ { print $2 '}
  147  blkid | awk '/sda5/ { print $2 '} >> /etc/fstab
  148  vim /etc/fstab
  149  reboot
  150  blkid
  151  history
  152  xxd -l 512 /dev/sda
  153  cat /etc/fstab
  154  blkid
  155  df -h
  156  xfs_admin -L kona /dev/sda5
  157  umount /dev/sda5
  158  xfs_admin -L kona /dev/sda5
  159  vim /etc/fstab
  160  ln /home/student/countdown /usr/local/bin/countdown
  161  ln /home/student/countdown /usr/local/sbin/countdown
  162  history
  163  free -m
  164  fdisk /dev/sda
  165  lsblk
  166  mkswap /dev/sda6
  167  vim /etc/fstab
  168  swapon -a
  169  free -m
  170  dd if=/dev/zero of=/swapfile bs=1M count=1024
  171  mkswap /swapfile
  172  chmod 600 /swapfile
  173  swapon /swapfile
  174  free -m
  175  history
  176  df -h
  177  dd if=/dev/sr0 of=/rhel9.iso bs=1M
  178  mkdir /repo
  179  vim /etc/fstab
  180  mount -a
  181  mount
  182  ls /repo
  183  ls /repo/BaseOS
  184  history
  185  tail -1 /etc/fstab
  186  df -h
  187  countdown 1
  188  dd if=/dev/sr0 of=/dummy
  189  history
  190  ls /repo
  191  dnf config-manager --add-repo="file:///repo/BaseOS"
  192  dnf config-manager --add-repo="file:///repo/AppStream"
  193  cd /etc/yum.repos.d/
  194  ls
  195  vim repo_BaseOS.repo
  196  cd
  197  dnf repolist
  198  dnf search nmap
  199  dnf install nmap
  200  vim /etc/yum.repos.d/repo_BaseOS.repo
  201  vim /etc/yum.repos.d/repo_AppStream.repo
  202  dnf install nmap
  203  history
  204  cat /etc/yum.repos.d/repo_BaseOS.repo
  205  ls /repo
  206  cd /etc/yum.repos.d/
  207  vim repo_BaseOS.repo
  208  dnf list 'selinux*'
  209  dnf provides */seinfo
  210  seinfo
  211  dnf provides */Containerfile
  212  dnf group list
  213  dnf module list
  214  dnf module info nginx
  215  cd
  216  top
  217  dd if=/dev/zero of=/dev/null &
  218  top
  219  echo 0 > /sys/bus/cpu/devices/cpu1/online
  220  top
  221  echo 1 > /sys/bus/cpu/devices/cpu1/online
  222  top
  223  killall dd
  224  cat /proc/sys/vm/swappiness
  225  echo 40 > /proc/sys/vm/swappiness
  226  cat /proc/sys/vm/swappiness
  227  sysctl -a | grep swapp
  228  vim /etc/sysctl.d/swappi.conf
  229  tuned-adm list
  230  ls /usr/lib/tuned/
  231  ls /usr/lib/tuned/virtual-guest/tuned.conf
  232  cat /usr/lib/tuned/virtual-guest/tuned.conf
  233  tuned-adm profile powersav e
  234  tuned-adm profile powersave
  235  tuned-adm list
  236  countdown 13
  237  systemctl status NetworkManager
  238  ip addr show
  239  nmtui
  240  ip a
  241  nmtui
  242  exit
  243  hostnamectl status
  244  reboot
  245  exit
  246  timedatectl status
  247  timedatectl set-time 17:48
  248  date -s 17:48
  249  systemctl status chronyd
  250  vim /etc/chrony.conf
  251  systemctl restart chronyd
  252  chronyc sources
  253  history
  254  systemctl -t help
  255  systemctl list-units -t service
  256  systemctl cat rsyslog.service
  257  systemctl status sshd.service
  258  systemctl status sshd
  259  systemctl disable --now sshd
  260  systemctl status sshd
  261  systemctl enable --now sshd
  262  systemctl status sshd
  263  kill -9 6928
  264  systemctl status sshd
  265  systemctl cat sshd
  266  systemctl status sshd
  267  history
  268  dnf install vsftpd
  269  systemctl cat vsftpd
  270  systemctl cat sshd
  271  systemctl cat vsftpd
  272  systemctl edit vsftpd.service
  273  systemctl cat vsftpd
  274  systemctl edit vsftpd.service
  275  systemctl cat vsftpd
  276  systemctl status vsftpd
  277  systemctl enable --now vsftpd
  278  systemctl status vsftpd
  279  kill -9 7244
  280  kill -9 7245
  281  systemctl status vsftpd
  282  systemctl cat vsftpd
  283  history
  284  systemctl show vsftpd
  285  man -k systemd
  286  man -k systemd | wc -l
  287  man systemd.directives
  288  man systemd.resource-control
  289  systemctl disable --now vsftpd
  290  systemctl mask vsftpd
  291  systemctl start vsftpd
  292  journalctl
  293  journalctl -p err
  294  journalctl -u sshd
  295  journalctl -xb
  296  journalctl -f
  297  dmesg
  298  systemctl status sshd
  299  systemctl status sshd -l
  300  journalctl -u sshd
  301  grep Storage /etc/systemd/journald.conf
  302  mkdir /var/log/journal
  303  ls -l /var/log/journal/
  304  systemctl restart systemd-journal-flush.service
  305  ls -l /var/log/journal/
  306  history
  307  lsblk
  308  gdisk /dev/sdb
  309  lsblk
  310  pvcreate /dev/sdb1
  311  pvs
  312  vgcreate vgdata /dev/sdb1
  313  vgs
  314  lvcreate -n lvdata -L 1G vgdata
  315  lvcreate -n lvdata -l 100%FREE vgdata
  316  mkfs.ext4 /dev/vgdata/lvdata
  317  vim /etc/fstab
  318  mkdir /lvdata
  319  mount -a
  320  history
  321  tail -1 /etc/fstab
  322  mount
  323  tail -1 /etc/fstab
  324  ls -l /dev/mapper/vgdata-lvdata /dev/vgdata/lvadata
  325  ls -l /dev/mapper/vgdata-lvdata /dev/vgdata/lvdata
  326  gdisk -l /dev/sdb
  327  fdisk /dev/sda
  328  lsblk
  329  vgcreate vgfiles /dev/sda9
  330  lvcreate -l 255 -n lvfiles /dev/vgfiles
  331  mkfs.ext4 /dev/vgfiles/lvfiles
  332  mount /dev/vgfiles/lvfiles /mnt
  333  df -h
  334  vgs
  335  vgextend vgfiles /dev/sdb2
  336  vgs
  337  df -h
  338  lvs
  339  lvextend -l +50%FREE /dev/vgfiles/lvfiles
  340  lvs
  341  df -h
  342  resize2fs /dev/vgfiles/lvfiles
  343  df -h
  344  lvextend -r -v -l +50%FREE /dev/vgfiles/lvfiles
  345  df -h
  346  lvextend -r -L -1G /dev/vgfiles/lvfiles
  347  lvreduce -r -L -1G /dev/vgfiles/lvfiles
  348  history
  349  lvextend --size 500M -r /dev/vgfiles/lvfiles
  350  lvextend --size +500M -r /dev/vgfiles/lvfiles
  351  vim /boot/grub2/grub.cfg
  352  vim /etc/default/grub
  353  grub2-mkconfig -o /boot/grub2/grub.cfg
  354  reboot
  355  systemctl get-default
  356  systemctl set-default multi-user.target
  357  systemctl get-default
  358  systemctl set-default graphical.target
  359  systemctl list-units -t target
  360  systemctl cat bluetooth.target
  361  systemctl cat graphical.target
  362  history
  363  getenforce
  364  dnf install -y httpd
  365  systemctl start httpd
  366  ps Zaux | grep http
  367  ls -Z /var/www
  368  vim /etc/httpd/conf/httpd.conf
  369  mkdir /web
  370  vim /web/index.html
  371  ls -ldZ /web
  372  systemctl restart httpd
  373  curl localhost
  374  setenforce permissive
  375  curl localhost
  376  vim /etc/httpd/conf/httpd.conf
  377  systemctl restart httpd
  378  curl localhost
  379  getenforce
  380  setenforce enforcing
  381  curl localhost
  382  grep AVC /var/log/audit/audit.log
  383  history
  384  ps Zaux | less
  385  ls -Zd /web
  386  ls -Zd /var/www/html/
  387  man semanage-fcontext
  388  semanage fcontext -a -t httpd_sys_content_t "/web(/.*)?"
  389  ls -Zd /web
  390  restorecon -Rv /web
  391  getenforce
  392  curl localhost
  393  history
  394  man -k _selinux
  395  dnf install -y selinux-policy-doc
  396  man -k _selinux
  397  man -k _selinux | grep http
  398  man httpd_selinux
  399  vim /etc/httpd/conf/httpd.conf
  400  systemctl restart httpd
  401  grep AVC /var/log/audit/audit.log
  402  man httpd_selinux
  403  man semanage-port
  404  semanage port -a -t http_port_t -p tcp 82
  405  systemctl restart httpd
  406  getsebool -a | wc
  407  getsebool -a | grep http
  408  setsebool -P httpd_enable_homedirs on
  409  semanage boolean -l -C
  410  semanage fcontext -l -C
  411  semanage port -l -C
  412  dnf provides */sealert
  413  journalctl | grep sealert
  414  sealert -l b2868c7a-5f63-475e-ba90-cc2ca5ac502b | less
  415  sealert -l ab0a8163-d944-4edc-bb26-a49240b62054 | less
  416  history
  417  mv /etc/hosts /var/www/html/
  418  ls -Z /var/www/html/
  419  restorecon -Rv /var/www/html
  420  history
  421  ssh [email protected]
  422  dnf install -y nfs-utils
  423  dnf list nfs*
  424  showmount -e 192.168.29.152
  425  mount 192.168.29.152:/nfsdata /mnt
  426  mount
  427  dnf install -y autofs
  428  vim /etc/hosts
  429  cp /var/www/html/hosts /etc/
  430  ls -Z /etc/hosts
  431  vim /etc/hosts
  432  showmount -e nfsserver
  433  vim /etc/auto.master
  434  vim /etc/auto.nfsfiles
  435  systemctl enable --now autofs
  436  mount
  437  cd /nfsfiles/
  438  ls -a
  439  cd files
  440  mount
  441  history
  442  grep nfsfiles /etc/auto.master
  443  cat /etc/auto.nfsfiles
  444  vim /etc/auto.master
  445  vim /etc/auto.ldap
  446  systemctl restart autofs
  447  cd /home/ldap
  448  ls -a
  449  cd ldapuser1
  450  cd ../ldapuser2
  451  cd ..
  452  ls
  453  history
  454  systemctl status firewalld
  455  firewall-cmd --list-all
  456  ls /usr/lib/firewalld/services/
  457  cat /usr/lib/firewalld/services/http.xml
  458  cp /usr/lib/firewalld/services/http.xml /etc/firewalld/services/sander.xml
  459  firewall-cmd --get-services | grep sander
  460  systemctl restart firewalld
  461  firewall-cmd --get-services | grep sander
  462  firewall-cmd --add-service http
  463  firewall-cmd --add-service http --permanent
  464  history
  465  systemctl list-units -t timer
  466  systemctl list-unit-files logro*
  467  systemctl cat logrotate.timer
  468  systemctl status logrotate.timer
  469  systemctl status logrotate.service
  470  dnf install -y sysstat
  471  systemctl list-unit-files sysstat*
  472  systemctl cat sysstat-collect.timer
  473  cd
  474  git clone https://github.com/sandervanvugt/rhcsa
  475  dnf install -y git
  476  git clone https://github.com/sandervanvugt/rhcsa
  477  cd rhcsa/
  478  ls
  479  cd
  480  su - linda
  481  vim /etc/crontab
  482  countdown 12
  483  vim /etc/containers/registries.conf
  484  podman run nginx
  485  podman run docker.io/library/nginx
  486  podman run -d docker.io/library/nginx
  487  podman ps
  488  cd rhcsa/
  489  dnf install -y container-tools
  490  podman info
  491  podman images
  492  podman login registry.access.redhat.com
  493  ls
  494  vim Containerfile
  495  podman build -t mymmap .
  496  podman images
  497  podman run localhost/mymmap:latest
  498  podman run alpine
  499  podman ps
  500  podman ps -a
  501  podman inspect 6522
  502  podman inspect 6522 | less
  503  podman images
  504  podman inspect c1aa | less
  505  podman search ubi
  506  podman run --name sleepy docker.io/redhat/ubi9 sleep 3600
  507  podman images
  508  podman run -d --name sleepy docker.io/redhat/ubi9 sleep 3600
  509  podman ps
  510  podman ps -a
  511  podman rm sleepy
  512  podman run -d --name sleepy docker.io/redhat/ubi9 sleep 3600
  513  podman exec -it sleepy sh
  514  ./countdown 1
  515  podman run docker.io/library/mariadb
  516  podman ps
  517  podman ps -a
  518  podman logs amazing_bhaskara
  519  podman run --name mydb -d -e MARIADB_ROOT_PASSWORD=password docker.io/library/mariadb
  520  podman ps
  521  ./countdown 12
  522  exit
  523  podman ps
  524  podman stop sleepy
  525  ps faux | less
  526  cd rhcsa/
  527  ls
  528  less mini-exam-30min.txt
  529  vim /etc/httpd/conf/httpd.conf
  530  man semanage-port
  531  less mini-exam-30min.txt
  532  useradd --help
  533  useradd lori -s /sbin/nologin
  534  grep lori /etc/passwd
  535  less mini-exam-30min.txt
  536  mkdir /txt
  537*
  538  less mini-exam-30min.txt
  539  ln -s /etc/hosts /tmp/hosts
  540  ls -l /tmp/hosts
  541  less mini-exam-30min.txt
  542  mkdir -p /data/sales
  543  groupadd sales
  544  chgrp sales /data/sales
  545  chmod 2770 /data/sales
  546  ls -l /data/sales/
  547  ls -ld /data/sales/
  548  cd /data/sales
  549  touch hello
  550  ls -l
  551  less mini-exam-30min.txt
  552  cd
  553  cd rhcsa/
  554  less mini-exam-30min.txt
  555  vgs
  556  less mini-exam-30min.txt
  557  lvcreate -l 50 lvextents
  558  lvcreate -l 50 -n lvextents vgfiles
  559  vgs
  560  vgdisplay vgfiles
  561  less mini-exam-30min.txt
  562  systemctl status tuned
  563  systemctl start tuned
  564  systemctl status tuned
  565  tuned-adm --help
  566  tuned-adm recommend
  567  tuned-adm profile virtual-guest
  568  history

STUDENT COMMANDS   39  podman login registry.access.redhat.com
   40  podman run -d -p 80:80 registry.access.redhat.com/ubi9/nginx-120
   41  podman run -d -p 8080:80 registry.access.redhat.com/ubi9/nginx-120
   42  podman port -a
   43  podman ps
   44  podman ps -a
   45  podman run -d -p 8080:80 docker.io/library/nginx
   46  podman ps
   47  sudo firewall-cmd --add-port=8080/tcp --permanent
   48  sudo firewall-cmd --reload
   49  podman search mariadb | grep quay
   50  podman run -d --name mydb -e MARIADB_ROOT_PASSWORD=password quay.io/centos7/mariadb-103-centos7
   51  podman exec mydb grep mysql /etc/passwd
   52  podman ps
   53  podman ps -a
   54  podman logs f37
   55  podman rm mydb
   56  podman run -d --name mydb -e MYSQL_ROOT_PASSWORD=password quay.io/centos7/mariadb-103-centos7
   57  podman exec mydb grep mysql /etc/passwd
   58  podman images
   59  podman inspect ece | less
   60  mkdir mydb
   61  ls -l mydb
   62  ls -ld mydb
   63  podman unshare ls -ld mydb
   64  podman unshare chown 27:27 mydb
   65  podman unshare ls -ld mydb
   66  podman unshare cat /proc/self/uid_map
   67  ls -ld mydb
   68  ls -Zd mydb/
   69  podman stop mydb
   70  podman rm mydb
   71  podman run -d --name mydb -e MYSQL_ROOT_PASSWORD=password -v /home/student/mydb:/var/lib/mysql:Z quay.io/centos7/mariadb-103-centos7
   72  ls -Z mydb
   73  countdown 1
   74  history
   75  ls -Z
   76  sudo loginctl enable-linger linda
   77  ssh linda@localhost
   78  sudo reboot
   79  sudo -i
   80  exit
   81  countdown 25
   82  exit
   83  history


LINDA COMMANDS    1  cat /tmp/hellofile
    2  exit
    3  ls
    4  ls -l
    5  cat lindafile
    6  exit
    7  cat lindafile
    8  ls -l
    9  rm -f lindafile
   10  ls -ld .
   11  exit
   12  crontab -e
   13  journalctl
   14  exit
   15  mkdir -p .config/systemd/user
   16  cd .config/systemd/user/
   17  podman run -d --name mynginx -p 8081:80 nginx
   18  podman ps
   19  man podman-generate
   20  man podman-generate-systemd
   21  podman generate systemd --name mynginx --files --new
   22  cat container-mynginx.service
   23  systemctl --user daemon-reload
   24  systemctl --user enable container-mynginx.service
   25  systemctl --user status container-mynginx.service
   26  exit
   27  history