RHCSA Day 3 Sander May 2022

    1  vim countdown.sh
    2  chmod +x countdown.sh
    3  ./countdown.sh 16
    4  exit
    5  tar -czvf /root/archive.tgz /etc
    6  ls -l /root/archive.tgz
    7  tar tvf /root/archive.tgz
    8  grep -v '^$' /etc/dnsmasq.conf
    9  grep -v '^$' /etc/dnsmasq.conf | sort > /var/tmp/dnslines.txt
   10  useradd linda
   11  find / -user linda
   12  find / -user linda 2>/dev/null
   13  mkdir /root/userfiles; find / -user linda -exec cp {} /root/userfiles \;
   14  history
   15  ./countdown.sh 13
   16  ./countdown.sh 12
   17  cat countdown.sh
   18  #tar -cvzf /root/archive2.tgz /etc
   19  history
   20  vim countdown.sh
   21  git clone https://github.com/sandervanvugt/rhcsa
   22  cat /etc/passwd
   23  head -1 /etc/passwd
   24  tail /etc/group
   25  id student
   26  id linda
   27  su - linda
   28  passwd lindaA
   29  su - linda
   30  usermod -aG wheel linda
   31  id linda
   32  su - linda
   33  history
   34  vim /etc/login.defs
   35  cd /etc/skel/
   36  ls
   37  ls -a
   38  ls -a /home/linda
   39  pwd
   40  passwd --help
   41  chage linda
   42  grep linda /etc/shadow
   43  man 5 shadow
   44  cd
   45  grep linda /etc/passwd
   46  grep linda /etc/group
   47  id linda
   48  ls -l
   49  chmod -x countdown.sh
   50  ls -l
   51  ./countdown.sh
   52  chmod +x countdown.sh
   53  ./countdown.sh
   54  countdown.sh
   55  mkdir /data/files
   56  mkdir -p /data/files
   57  cd /data
   58  groupadd sales
   59  usermod -aG sales linda
   60  mkdir sales
   61  ls -l
   62  chgrp sales sales
   63  ls -l
   64  chmod 770 sales
   65  ls -l
   66  chmod g-x sales
   67  ls -l
   68  chmod g+x sales
   69  ls -l
   70  cd sales
   71  touch myfile
   72  ls -l
   73  ln -s myfile linkfile
   74  ls -l
   75  history
   76  cd
   77  ./countdown.sh 12
   78  pwd
   79  cd /home/linda
   80  touch rootfile
   81  ls -l
   82  su - linda
   83  pwd
   84  vim playme.sh
   85  chmod +x playme.sh
   86  su - linda
   87  chmod u+s playme.sh
   88  ls -k
   89  ls -l
   90  find / -perm /4000 2>/dev/null
   91  find / -perm /4000 -exec ls -l {} \; 2>/dev/null
   92  ls -l /etc/shadow
   93  tail -1 /etc/shadow
   94  useradd -G sales lisa
   95  grep sales /etc/group
   96  passwd lisa
   97  su - lisa
   98  chmod g+s /data/sales
   99  ls -ld /data/sales
  100  su - lisa
  101  cd /data
  102  chmod +t sales/
  103  ls -l
  104  su - lisa
  105  ls -l
  106  chgrp wheel files
  107  ls -l
  108  xxd -l 512 /dev/sda
  109  lsblk
  110  xxd -l 512 /dev/nvme0n1
  111  fdisk -l /dev/nvme0n1
  112  poweroff
  113  ./countdown.sh 12
  114  lsblk
  115  ls -l /dev/nv*
  116  fdisk /dev/nvme0n1
  117  lsblk
  118  mkfs.xfs /dev/nvme0n1p3
  119  mount /dev/nvme0n1p3 /mnt
  120  findmnt
  121  lsblk
  122  cd /mnt
  123  ls
  124  cp /etc/hosts .
  125  ls
  126  umount /mnt
  127  lsof .
  128  cd
  129  umount /mnt
  130  vim /etc/fstab
  131  mount -a
  132  mkdir /files
  133  mount -a
  134  reboot
  135  who
  136  history
  137  exit
  138  lsblk
  139  history
  140  cd /files/
  141  ls
  142  lsblk
  143  history
  144  exit
  145  history
  146  fdisk /dev/nvme0n1
  147  reboot
  148  lsblk
  149  mkfs.xfs /dev/nvme0n1p5
  150  mkfs.ext4 /dev/nvme0n1p6
  151  mkdir /xfs
  152  mkdir /ext4
  153  vim /etc/fstab
  154  mount -a
  155  lsblk
  156  touch /ext4/myext4file
  157  history
  158  vim /etc/fstab
  159  fdisk /dev/nvme0n1
  160  reboot
  161  journalctl -xb
  162  cat /etc/fstab
  163  lsblk
  164  cat /etc/fstab
  165  blkid
  166  blkid | grep n1p5 | awk '{ print $2 }'
  167  blkid | grep n1p5 | awk '{ print $2 }' >> /etc/fstab
  168  vim /etc/fstab
  169  reboot
  170  lsblk
  171  tune2fs -L cow /dev/nvme0n1p5
  172  blkid
  173  xfs_admin -L goat /dev/nvme0n1p1
  174  umount /dev/nvme0n1p1
  175  xfs_admin -L goat /dev/nvme0n1p1
  176  mount -a
  177  lsblk
  178  blkid
  179  vim /etc/fstab
  180  \
  181  ls -l /dev/nvm*
  182  vim /etc/fstab
  183  reboot
  184  vim /etc/fstab
  185  findmnt --verify
  186  vim /etc/fstab
  187  findmnt --verify
  188  groupadd students
  189  groupadd profs
  190  vim /etc/login.defs
  191  useradd -G profs anna
  192  useradd -G profs anouk
  193  tail /etc/passwd
  194  usermod -aG students linda
  195  usermod -aG students lisa
  196  id lisa
  197  cd /data
  198  mkdir profs students
  199  ls -l
  200  chmod 3770 students/
  201  chmod 3770 profs
  202  chgrp students students
  203  chgrp profs profs
  204  ls -l
  205  history
  206  ls
  207  ls -l
  208  cd students
  209  touch {1..10}.txt
  210  ls
  211  ls -l
  212  getfacl .
  213  setfacl -R -m g:profs:rx /data/students
  214  ls -l
  215  man setfacl
  216  setfacl -R -x g:profs /data/students
  217  ls -l
  218  setfacl -R -m g:profs:rX /data/students
  219  ls -lk
  220  getfacl .
  221  su - linda
  222  ls -l
  223  getfacl 9.txt
  224  getfacl linda1
  225  history
  226  setfacl -m d:g:profs:rx /data/profs
  227  getfacl /data/profs
  228  su - linda
  229  getfacl linda2
  230  setfacl -m d:g:profs:rx /data/students/
  231  su - linda
  232  getfacl linda3
  233  cd
  234  ./countdown.sh 13
  235  find / -name "mnttab"
  236  find / -name "vfstab"
  237  cat /etc/os-release
  238  yum repolist
  239  yum install -y git
  240  cd /etc/yum.repos.d/
  241  ls
  242  which yum
  243  which dnf
  244  ls -l /bin/yum /bin/dnf
  245  cd
  246  df -h
  247  dd if=/dev/sr0 of=/rhel8.iso bs=1M
  248  bg
  249  mkdir /repo
  250  vim /etc/fstab
  251  mount -a
  252  cd /repo
  253  ls
  254  cd BaseOS/
  255  ls
  256  ls Packages/
  257  yum install git
  258  cd
  259  df -h
  260  lsblk
  261  cd /etc/yum.repos.d/
  262  vim base.repo
  263  vim appstream.repo
  264  yum repolist
  265  yum install git
  266  history
  267  cd
  268  yum search nmap
  269  yum search seinfo
  270  seinfo
  271  yum provides */seinfo
  272  yum module list
  273  yum module provides httpd
  274  yum module info httpd
  275  yum module info postgresql
  276  yum module info --profile postgresql
  277  yum module list postgresql
  278  yum module install postgresql:9.6
  279  yum module install postgresql:9.6/devel
  280  yum install httpd
  281  yum module enable postgresql:9.6
  282  yum module info postgresql
  283  yum module info postgresql | less
  284  ./countdown.sh 12
  285  fdisk /dev/nvme0n1
  286  lsblk
  287  pvcreate /dev/nvme0n1p7
  288  pvs
  289  vgcreate --help | less
  290  vgcreate -s 4m vgdata /dev/nvme0n1p7
  291  pvs
  292  vgs
  293  man lvcreate
  294  lvcreate -n lvdata -L 1G vgdata
  295  #lvcreate -n lvdata -l 100%FREE vgdata
  296  #lvcreate -n lvdata -l 255 vgdata
  297  lvcreate -n lvdata -l 100%FREE vgdata
  298  lvs
  299  mkfs.xfs /dev/vgdata/lvdata
  300  vim /etc/fstab
  301  mkdir /lvdata
  302  mount -a
  303  mount
  304  ls -l /dev/vgdata/lvdata /dev/mapper/vgdata-lvdata
  305  history
  306  fdisk /dev/nvme0n1
  307  vim /etc/fstab
  308  reboot
  309  ls /xfs
  310  ls /ext4
  311  vim /etc/fstab
  312  cd /xfs
  313  touch myxfsfsfsfsfsfsfs
  314  cd
  315  fdisk /dev/nvme0n1
  316  reboot
  317  fdisk /dev/nvme0n1
  318  blkid
  319  vim /etc/fstab
  320  reboot
  321  vim /etc/fstab
  322  reboot
  323  systemctl list-units
  324  systemctl isolate emergency.target
  325  systemctl list-units
  326  touch hyello
  327  reboot
  328  touch hhhh
  329  systemctl list-units
  330  touch hhhh
  331  mount
  332  lsblk
  333  mount -o remount,rw /
  334  touch hiho
  335  systemctl start rescue.target
  336  lsblk
  337  vim /etc/default/grub
  338  grub2-mkconfig -o /boot/grub2/grub.cfg
  339  cd /boot
  340  ls
  341  cd /
  342  mount -a
  343  grub2-mkconfig -o /boot/grub2/grub.cfg
  344  reboot
  345  ls /var/log/journal/
  346  vim /etc/fstab
  347  cd /run/systemd/
  348  ls
  349  cd generator/
  350  ls
  351  vim ext4.mount
  352  lsblk
  353  blkid
  354  blkid | grep cow
  355  cd /dev/disk
  356  ls
  357  ls by-label/
  358  \ls by-label/
  359  \ls -l by-label/
  360  cd
  361  vim /etc/fstab
  362  cd /run/systemd/generator/
  363  ls
  364  cat files.mount
  365  cp files.mount /etc/systemd/system/
  366  vim /etc/fstab
  367  systemctl daemon-reload
  368  ls
  369  cd ..
  370  cd generator/
  371  ls
  372  cd /etc/systemd/system/
  373  vim files.mount
  374  systemctl cat sshd.service
  375  vim files.mount
  376  systemctl enable --now files.mount
  377  reboot
  378  vim /etc/httpd/conf/httpd.conf
  379  systemctl restart httpd
  380  systemctl status httpd
  381  journalctl | grep sealert
  382  journalctl | grep sealert | grep http
  383  ./countdown.sh 12
  384  history
  385  journalctl | grep sealert
  386  restorecon -Rv /
  387  touch /.autorelabel
  388  reboot
  389  mount -o remount,rw /
  390  rm /.autorelabel
  391  reboot
  392  journalctl | grep sealert
  393  uptime
  394  rm -rf /var/log/journal/
  395  reboot
  396  journalctl | grep sealert
  397  systemctl status httpd
  398  journalctl | grep sealert
  399* setenforce permissiveA
  400  systemctl restart httpd
  401  systemctl status httpd
  402  journalctl | grep sealert
  403  sealert -l f782833b-c95d-4e50-a6c3-bd9b2c4fc9a5
  404  sealert -l f782833b-c95d-4e50-a6c3-bd9b2c4fc9a5 | less
  405  semanage port -a -t http_port_t -p tcp 82
  406  setenforce enforcing
  407  systemctl restart httpd
  408  systemctl status httpd
  409  grep AVC /var/log/audit/audit.log
  410  vim /etc/httpd/conf/httpd.conf
  411  systemctl restart httpd
  412  journalctl | grep sealert
  413  systemctl status httpd
  414  mkdir /www
  415  systemctl restart httpd
  416  journalctl | grep sealert
  417  systemctl status setroubleshootd
  418  curl localhost
  419  curl localhost:80
  420  curl localhost:82
  421  journalctl | grep sealert
  422  grep sealert /var/log/messages | less
  423  sealert -l 84188fa1-166f-43af-8f0b-4b213c2d2f50 | less
  424  man -k _selinux
  425  yum search selinux
  426  yum install selinux-policy-doc
  427  mandb
  428  man -k _selinux
  429  man -k _selinux | wc
  430  man -k _selinux | grep http
  431  man httpd_selinux
  432  getsebool -a
  433  getsebool -a | wc
  434  getsebool -a | grep http
  435  setsebool -P httpd_use_cifs on
  436  history