RHCSA day3 may23

    1  tar czvf /root/archive.tgz /etc
    2  history
    3  cat /etc/dnsmasq.conf
    4  cat /etc/dnsmasq.conf  | grep -v '^$'
    5  cat /etc/dnsmasq.conf  | grep -v '^$' | sort
    6  cat /etc/dnsmasq.conf  | grep -v '^$' | sort > /var/tmp/dnslines.txt
    7  useradd bob
    8  find / -user bob
    9  mkdir /root/userfiles ; find / -user bob -exec cp -ra {} /root/userfiles \;
   10  ls -l /root/userfiles/
   11  history
   12  visudo
   13  /home/student/countdown 12
   14  tail -1 /etc/passwd
   15  visudo
   16  su - bob
   17  echo password | passwd --stdin bob
   18  su - bob
   19  visudo
   20  su - bob
   21  vim /etc/login.defs
   22  cd /etc/skel/
   23  ls
   24  ls -a
   25  touch hello
   26  less /etc/passwd
   27  id bob
   28  groupadd sales
   29  usermod -aG sales bob
   30  id bob
   31  su - bob
   32  lid wheel
   33  lid --help
   34  lid -g wheel
   35  chage bob
   36  cd
   37  ln /home/student/countdown /usr/local/bin/countdown
   38  ln /home/student/countdown /usr/local/sbin/countdown
   39  countdown 7
   40  vim /etc/login.defs
   41  touch /etc/skel/newfile
   42  groupadd profs
   43  groupadd students
   44  useradd -G profs anna
   45  useradd -G profs anouk
   46  useradd -G students linda
   47  useradd -G students lisa
   48  for i in anna anouk lisa linda; do echo password | passwd --stdin $i; done
   49  history
   50  countdown 12
   51  cd /etc/ls -l
   52  cd /etc
   53  ls -l
   54  cd
   55  mkdir -p /data/profs /data/students
   56  cd /data
   57  ls -l
   58  id
   59  umask
   60  chown :profs /data/profs
   61  ls -l
   62  chgrp students /data/students
   63  ls -l
   64  chmod 770 students
   65  ls -l
   66  chmod g+w,o-rx /data/profs
   67  ls -l
   68  su - anna
   69  chmod g+s /data/profs
   70  su - anna
   71  su - anouk
   72  chmod +t /data/profs
   73  su - anouk
   74  history
   75  cd
   76  pwd
   77  touch removeme
   78  chattr +i removeme
   79  rm -f removeme
   80  lsattr removeme
   81  chattr -i removeme
   82  rm -f removeme
   83  countdown 7
   84  history
   85  poweroff
   86  lsblk
   87  countdown 12
   88  vim /etc/profile
   89  vim /etc/profile.d/
   90  fdisk /dev/sda
   91  lsblk
   92  mkfs.xfs /dev/sda3
   93  mount /dev/sda3 /mnt
   94  lsblk
   95  mount
   96  mkdir /files
   97  vim /etc/fstab
   98  reboot
   99  lsblk
  100  fdisk /dev/sda
  101  mkfs.ext4 /dev/sda6
  102  mkfs.xfs /dev/sda5
  103  mkdir /sda5 /sda6
  104  vim /etc/fstab
  105  mount -a
  106  vim /etc/fstab
  107  fdisk /dev/sda
  108  reboot
  109  touch abc
  110  mount -o remount,rw /
  111  lsblk
  112  fdisk -l /dev/sda
  113  blkid
  114  cat /etc/fstab
  115  cat /etc/fstab | grep sda5
  116  blkid | grep sda5
  117  blkid | grep sda5 | awk '{ print $2 }'
  118  blkid | awk '{ print $2 }'
  119  blkid | grep sda5 | awk '{ print $2 }'
  120  blkid | grep sda5 | awk '{ print $2 }' >> /etc/fstab
  121  blkid | awk '/sda5/ { print $2 }'
  122  vim /etc/fstab
  123  history
  124  vim /etc/fstab
  125  vim /etc/default/grub
  126  grub2-mkconfig -o /boot/grub2/grub.cfg
  127  reboot
  128  vim /etc/fstab
  129  lsblk
  130  vim /etc/fstab
  131  xfs_admin --help
  132  xfs_admin -L cow /dev/sdb3
  133  vim /etc/fstab
  134  reboot
  135  fdisk -l /dev/sdb
  136  fdisk -l /dev/sda
  137  mkfs.ext4 --help
  138  cd /boot
  139  umount /boot
  140  lsof /boot
  141  kill -9 6571
  142  mount
  143  lsblk
  144  findmnt
  145  man 5 fstab
  146  cd
  147  free -m
  148  fdisk /dev/sda
  149  cat /proc/partitions
  150  lsblk
  151  mkswap /dev/sda6
  152  vim /etc/fstab
  153  free -m
  154  swapon -a
  155  free -m
  156  countdown 15
  157  lsblk
  158  mkdir -p /mounts/files
  159  gdisk /dev/sdb
  160  fdisk /dev/sdb
  161  mkfs.ext4 /dev/sdb1
  162  mkfs.xfs -L myxfs /dev/sdb5
  163  blkid
  164  vim /etc/fstab
  165  mkswap /dev/sdb6
  166  vim /etc/fstab
  167  mount 0a
  168  mount -a
  169  vim /etc/fstab
  170  mkdir /mounts/xfs
  171  mount -a
  172  swapon -a
  173  reboot
  174  df -h
  175  cd /
  176  dd if=/dev/sr0 of=/rhel9.iso bs=1M
  177  mkdir /repo
  178  cp /etc/fstab /etc/fstab.bak
  179  echo "/rhel9.iso  /repo  iso9660  defaults  0 0" >> /etc/fstab
  180  mount -a
  181  lsblk
  182  dd if=/dev/zero of=/dev/sdb bs=1M count=100
  183  lsblk
  184  vim /etc/fstab
  185  dnf repolist
  186  cd /etc/yum.repos.d/
  187  ls
  188  rm -f *
  189  dnf repolist
  190  history
  191  dnf config-manager --add-repo="file:///repo/AppStream"
  192  cat /etc/yum.repos.d/repo_AppStream.repo
  193  ls /repo
  194  dnf config-manager --add-repo="file:///repo/BaseOS"
  195  dnf repolist
  196  dnf search nmap
  197  dnf install nmap
  198  vim repo_BaseOS.repo
  199  vim repo_AppStream.repo
  200  dnf install nmap
  201  vim repo_AppStream.repo
  202  cd
  203  seinfo
  204  dnf provides */Containerfile
  205  dnf groups list
  206  dnf groups install "Virtualization Host"
  207  dnf groups list
  208  dnf groups list hidden
  209  cat /etc/redhat-release
  210  dnf module list
  211  countdown 15
  212  history
  213  dnf download htpd
  214  dnf download httpd
  215  ls
  216  rpm -qp httpd-2.4.53-7.el9.x86_64.rpm --scripts
  217  rpm -qf /etc/nsswitch.conf
  218  rpm -qf /etc/passwd
  219  rpm -ql setup
  220  rpm -qd setup
  221  history
  222  cat /proc/partitions
  223  reboot
  224  cat /proc/partitions
  225  gdisk /dev/sdb
  226  pvcreate /dev/sdb1
  227  xxd /dev/sdb1 | less
  228  vgcreate vgdata /dev/sdb1
  229  vgs
  230  vgdisplay vgdata | less
  231  echo $(( 255 * 4 ))
  232  lvcreate -n lvdata -L 1G vgdata
  233  lvcreate -n lvdata -l 100%FREE vgdata
  234  mkfs.ext4 /dev/vgdata/lvdata
  235  vim /etc/fstab
  236  mkdir /lvdata
  237  mount -a
  238  mount
  239  tail -1 /etc/fstab
  240  ls -l /dev/mapper/vgdata-lvdata /dev/vgdata/lvdata
  241  history
  242  xxd /dev/sdb1 | less
  243  vgs
  244  vgextend vgdata /dev/sdb2
  245  vgs
  246  df -h
  247  lvextend -l +50%FREE /dev/vgdata/lvdata
  248  lvs
  249  df -h
  250  resize2fs /dev/vgdata/lvdata
  251  df -h
  252  countdown 15
  253  ip a
  254  systemctl status NetworkManager
  255  nmtui
  256  ip a
  257  sysctl -a
  258  sysctl -a | wc -l
  259  dnf install -y tuned
  260  systemctl enable --now tuned
  261  tuned-adm list
  262  echo vm.swappiness = 33 > /etc/sysctl.d/swappiness.conf
  263  systctl -p /etc/sysctl.d/swappiness.conf
  264  sysctl -p /etc/sysctl.d/swappiness.conf
  265  sysctl -a | grep swappi
  266  mkdir /etc/tuned/myprofile
  267  cat >> /etc/tuned/myprofile/tuned.conf <<EOF
  268  [sysctl]
  269  vm.swappiness = 66
  270  EOF
  271  tuned-adm list
  272  tuned-adm profile myprofile
  273  tuned-adm profile
  274  sysctl -a | grep swapp
  275  vim /etc/tuned/tuned-main.conf
  276  history
  277  cat /lib/tuned/network-throughput/tuned.conf
  278  ls /etc/tuned /usr/lib/tuned/
  279  cd /
  280  ls -l
  281  history -w
  282  cat /proc/partitions
  283  gdisk /dev/sdb
  284  pvcreate /dev/sdb1
  285  xxd /dev/sdb1 | less
  286  vgcreate vgdata /dev/sdb1
  287  vgs
  288  vgdisplay vgdata | less
  289  echo $(( 255 * 4 ))
  290  lvcreate -n lvdata -L 1G vgdata
  291  lvcreate -n lvdata -l 100%FREE vgdata
  292  mkfs.ext4 /dev/vgdata/lvdata
  293  vim /etc/fstab
  294  mkdir /lvdata
  295  mount -a
  296  mount
  297  tail -1 /etc/fstab
  298  ls -l /dev/mapper/vgdata-lvdata /dev/vgdata/lvdata
  299  history
  300  xxd /dev/sdb1 | less
  301  vgs
  302  vgextend vgdata /dev/sdb2
  303  vgs
  304  df -h
  305  lvextend -l +50%FREE /dev/vgdata/lvdata
  306  lvs
  307  df -h
  308  resize2fs /dev/vgdata/lvdata
  309  df -h
  310  countdown 15
  311  ip a
  312  systemctl status NetworkManager
  313  nmtui
  314  ip a
  315  sysctl -a
  316  sysctl -a | wc -l
  317  dnf install -y tuned
  318  systemctl enable --now tuned
  319  tuned-adm list
  320  echo vm.swappiness = 33 > /etc/sysctl.d/swappiness.conf
  321  systctl -p /etc/sysctl.d/swappiness.conf
  322  sysctl -p /etc/sysctl.d/swappiness.conf
  323  sysctl -a | grep swappi
  324  mkdir /etc/tuned/myprofile
  325  cat >> /etc/tuned/myprofile/tuned.conf <<EOF
  326  [sysctl]
  327  vm.swappiness = 66
  328  EOF
  329  tuned-adm list
  330  tuned-adm profile myprofile
  331  tuned-adm profile
  332  sysctl -a | grep swapp
  333  vim /etc/tuned/tuned-main.conf
  334  history
  335  cat /lib/tuned/network-throughput/tuned.conf
  336  ls /etc/tuned /usr/lib/tuned/
  337  cd /
  338  ls -l
  339  history -w
  340  reboot
  341  history
  342  systemctl -t help
  343  systemctl list-units -t service
  344  systemctl cat sshd.service
  345  systemctl edit sshd.service
  346  systemctl cat sshd.service
  347  systemctl status sshd
  348  systemctl stop sshd
  349  systemctl status sshd
  350  systemctl start sshd.service
  351  systemctl status cups
  352  dnf install vsftpd
  353  systemctl status vsftpd
  354  systemctl enable --now vsftpd
  355  history
  356  systemctl list-unit-files
  357  #subscription-manager register
  358  #subscription-manager attach
  359  systemctl show sshd.service
  360  dnf install httpd
  361  systemctl list-unit-files | wc -l
  362  systemctl list-units --all | wc -l
  363  systemctl list-units --all
  364  systemctl cat httpd.service
  365  systemctl show httpd.service
  366  systemctl edit httpd.service
  367  systemctl daemon-reload
  368  systemctl restart httpd
  369  systemctl status httpd
  370  kill -9 7369
  371  systemctl status httpd
  372  systemctl stop httpd
  373  systemctl mask httpd
  374  systemctl start httpd
  375  systemctl unmask httpd
  376  journalctl
  377  journalctl -p err
  378  journalctl -f
  379  systemctl status rsyslog
  380  cd /var/log
  381  ls -lrt
  382  vim /etc/rsyslog.conf
  383  grep 'Storage' /etc/systemd/journald.conf
  384  pwd
  385  ls
  386  mkdir /var/log/journal
  387  ls /var/log/journal/
  388  systemctl restart systemd-journal-flush.service
  389  ls /var/log/journal/
  390  systemctl cat httpd.service
  391  man -k systemd
  392  man -k systemd | wc -l
  393  man systemd.directives
  394  man systemd.service
  395  history
  396  systemctl stop httpd
  397  systemctl disable httpd
  398  systemctl cat httpd
  399  systemctl status httpd
  400  systemctl enable --now httpd
  401  systemctl reboot
  402  vim /etc/default/grub
  403  grub2-mkconfig -o /boot/grub2/grub.cfg
  404  cd /boot
  405  ls
  406  cd grub2/
  407  ls
  408  cd ..
  409  find . -name "grub.cfg"
  410  cd
  411  systemctl get-default
  412  systemctl set-default graphical.target
  413  reboot
  414  countdown 13
  415  getenforce
  416  setenforce  permissive
  417  getenforce
  418  setenforce
  419  setenforce enforcing
  420  ps aux | grep http
  421  ps Zaux | grep http
  422  ls -Z /var/www
  423  mkdir /web
  424  vim /web/index.html
  425  vim /etc/httpd/conf/httpd.conf
  426  systemctl restart httpd
  427  systemctl status httpd
  428  curl http://localhost
  429  getenforce
  430  setenforce permissive
  431  curl http://localhost
  432  vim /etc/httpd/conf/httpd.conf
  433  systemctl restart httpd
  434  curl http://localhost
  435  getenforxce
  436  getenforce
  437  setenforce enforcing
  438  curl http://localhost
  439  grep AVC /var/log/audit/audit.log
  440  cd /var/www
  441  ls -Z
  442  ls -lZ /web
  443  man semanage-fcontext
  444  semanage fcontext -a -t httpd_sys_content_t "/web(/.*)?"
  445  ls -Zd /web
  446  restorecon -Rv /web
  447  ls -Zd /web
  448  getenforce
  449  curl http://localhost
  450  history
  451  countdown 12
  452  cd
  453  ls -lZ /etc/hosts
  454  cp /etc/hosts .
  455  ls -Z hosts
  456  mv hosts /tmp/hosts
  457  ls -lZ /tmp/hosts
  458  mv /tmp/hosts /web
  459  ls -lZ /web
  460  curl http://localhost/hosts
  461  setenforce permissive
  462  curl http://localhost/hosts
  463  setenforce enforce
  464  setenforce enforcing
  465  grep AVC /var/log/audit/audit.log
  466  ls -Z /web
  467  ls -Zl /web
  468  restorecon -Rv /web
  469  journactl | grep sealert
  470  journalctl | grep sealert
  471  sealert -l 7bf77eae-01f9-466a-8051-1709a7e6f7d7 | less
  472  journalctl | grep sealert
  473  sealert -l a7307fae-0db9-4571-9337-63c0f9333d30 | less
  474  semanage fcontext -l -C
  475  dnf install -y selinux-policy-doc
  476  man -k _selinux
  477  man -k _selinux | wc -l
  478  man httpd_selinux
  479  vim /etc/ssh/sshd_config
  480  systemctl restart sshd
  481  systemctl status sshd
  482  journalctl -xeu sshd.service
  483  setenforce permissive
  484  systemctl restart sshd
  485  setenforce enforcing
  486  journalctl | grep sealert
  487  sealert -l fe2b0574-4fea-4ccb-aeed-7bd4b3109806 | less
  488  semanage port -a -t ssh_port_t tpc 2022
  489  man semanage-port
  490  semanage port -a -t ssh_port_t -p tcp 2022
  491  systemctl restart sshd
  492  getsebool -a
  493  getsebool -a | grep ftp
  494  setsebool -P ftpd_anon_write on
  495  getsebool -a | grep ftp
  496  countdown 2
  497  poweroff
  498  password
  499  vim /etc/hosts
  500  ip a
  501  vim /etc/httpd/conf/httpd.conf
  502  lsblk
  503  dnf install stratis-cli stratisd
  504  systemctl enable --now stratisd
  505  stratis --help
  506  stratis pool create mypool /dev/sdc
  507  stratis pool list
  508  stratis blockdev list
  509  stratis fs create mypool myfs
  510  stratis fs list
  511  stratis fs create mypool myfs2
  512  stratis fs list
  513  mkdir /myfs
  514  lsblk --output=UUID
  515  blkid
  516  stratis fs list
  517  vim /etc/fstab
  518  reboot
  519  mount
  520  findmnt
  521  df -h
  522  stratis fs list
  523  stratis pool list
  524  countdown 15
  525  dnf install nfs-utils
  526  vim /etc/hosts
  527  showmount -e nfsserver
  528  mount nfsserver:/var /mnt
  529  ls /mnt
  530  umount /nfs
  531  umount /mnt
  532  dnf install autofs
  533  vim /etc/auto.master
  534  vim /etc/auto.misc
  535  showmount -e nfsserver
  536  vim /etc/auto.master
  537  ls /
  538  mount | grep files
  539  vim /etc/auto.master
  540  vim /etc/auto.nfsfiles
  541  ls -l /
  542  systemctl restart nfsserver
  543  systemctl restart autofs
  544  ls -l /
  545  cd /nfsfiles
  546  la -a
  547  ls -a
  548  cd nfsdata
  549  mount
  550  vim /etc/auto.master
  551  showmount -e nfsserver
  552  vim /etc/auto.ldap
  553  systemctl restart autofs
  554  cd /home
  555  ls
  556  cd ldap
  557  ls -a
  558  cd ldapuser3
  559  cat /etc/auto.ldap
  560  grep ldap /etc/auto.master
  561  cd
  562  history