RHCSA jan21 day2

  id linda
    4  su - linda
    5  id student
    6  ls
    7  bash countdown 12
    8  less /etc/passwd
    9  awk -F : '$3 < 1000 { print $1 }' /etc/passwd
   10  less /etc/passwd
   11  less /etc/login.defs
   12  history | grep user
   13  history
   14  useradd lisa
   15  vim /etc/login.defs
   16  vim /etc/default/useradd
   17  ls -a /etc/skel/
   18  touch /etc/skel/newfile
   19  useradd bob
   20  ls -la /home/bash
   21  ls -la /home/bob
   22  groupadd sales
   23  useradd --help | less
   24  useradd -G sales linda
   25  usermod -aG sales linda
   26  id linda
   27  usermod -G wheel linda
   28  id linda
   29  usermod -aG sales linda
   30  passwd --help
   31  passwd linda
   32  chage linda
   33  grep linda /etc/shadow
   34  vim /etc/default/useradd
   35  useradd --help
   36  useradd --help | less
   37  id linda
   38  grep linda /etc/passwd
   39  grep linda /etc/groups
   40  grep linda /etc/group
   41  id linda
   42  ls
   43  countdown 12
   44  echo $PATH
   45  ./countdown 12
   46  ls -l
   47  bash countdown 12
   48  chmod +x countdown
   49  ./countdown 1
   50  ls -l
   51  ls -ld .
   52  id linda
   53  id lisa
   54  usermod -aG sales lisa
   55  id lisa
   56  groupadd account
   57  useradd -G account anna
   58  useradd -G account anouk
   59  id anna
   60  id anouk
   61  mkdir /data/account
   62  mkdir -p /data/account
   63  mkdir -p /data/sales
   64  cd /data
   65  ls -l
   66  chgrp sales sales
   67  ls -l
   68  chmod 770 sales
   69  ls -l
   70  chgrp account account/
   71  chmod 770 account/
   72  ls -l
   73  su - anna
   74  history
   75  mkdir blah
   76  chgrp sales blah
   77  ls -l
   78  chown linda:sales blah
   79  ls -l
   80  chown :account blah
   81  ls -l
   82  chmod 660 blah
   83  id anna
   84  su - anna
   85  cd /home/linda
   86  vim playme
   87  rm --help
   88  vim playme\
   89  vim playme
   90  chmod +x playme
   91  ls -l
   92  su - linda
   93  chmod u+s playme
   94  ls -l
   95  find / -perm /4000
   96  ls -l /usr/bin/passwd /etc/shadow
   97  cd
   98  echo $PATH
   99  mv countdown /usr/bin
  100  countdown 12
  101  cd /data
  102  ls -l
  103  grep sales /etc/group
  104  su - linda
  105  chmod g+s sales
  106  ls -l
  107  su - linda
  108  su - lisa
  109  chmod +t sales
  110  su - lisa
  111  ls -l sales
  112  ls -ld sales
  113  chown lisa sales
  114  ls -ld sales
  115  su - lisa
  116  ls -l
  117  setfacl -m -R g:account:rx sales
  118  setfacl -R -m g:account:rx sales
  119  ls -l
  120  getfacl sales
  121  ls -l sales/
  122  rm -rf sales
  123  mkdir sales
  124  su - linda
  125  chown :sales sales
  126  chmod 3770 sales
  127  su - linda
  128  setfacl -R -m g:account:rx sales
  129  ls -l sales/
  130  man setfacl
  131  setfacl -R -x account sales
  132  man setfacl
  133  setfacl -R -x g:account sales
  134  getfacl sales
  135  setfacl -R -m g:account:rX sales
  136  ls -l sales/
  137  su - linda
  138  ls -l sales/
  139  setfacl -m d:g:account:rx sales
  140  getfacl sales
  141  su - linda
  142  cd /home/linda
  143  touch rootsfile
  144  su - linda
  145  ls
  146  chattr +i myfile
  147  rm -f myfile
  148  ls -l
  149  chattr -i myfile
  150  rm -f myfile
  151  countdown 12
  152  poweroff
  153  history
  154  lsblk
  155  gdisk /dev/sda
  156  fdisk /dev/sda
  157  lsblk
  158  cat /proc/partitions
  159  lsblk
  160  mkfs.xfs /dev/sda3
  161  mount /dev/sda3 /mnt
  162  mount
  163  cd /mnt
  164  cp /etc/hosts .
  165  cd
  166  ls /mnt
  167  umount /dev/sda3
  168  ls /mnt
  169  vim /etc/fstab
  170  mount -a
  171  mkdir /mydata
  172  mount -a
  173  mount
  174  vim /etc/fstab
  175  reboot
  176  vim /etc/fstab
  177  mount
  178  mount | grep '^/'
  179  fdisk -l
  180  fdisk -l /dev/sda
  181  history
  182  groupadd profs
  183  groupadd student
  184  groupadd students
  185  vim /etc/login.defs
  186  chage linda
  187  useradd -G student linda
  188  usermod -aG student linda
  189  usermod -aG student lisa
  190  usermod -aG students lisa
  191  usermod -aG students linda
  192  vim /etc/group
  193  usermod -aG profs anna
  194  usermod -aG profs anouk
  195  id anna
  196  id linda
  197  mkdir /data/profs /data/students
  198  cd /data
  199  ls -l
  200  chown anna:profs profs
  201  chown anna:students students
  202  ls -l
  203  chmod 3770 profs
  204  chmod 3770 students
  205  ls -l
  206  su - linda
  207  setfacl -R -m g:profs:rX /data/students
  208  setfacl -m d:g:profs:rx /data/students
  209  su - linda
  210  chown -R anna .
  211  ls -ld .
  212  ls -l
  213  lsblk
  214  fdisk /dev/sda
  215  partprobe
  216  cat /proc/partitions
  217  lsblk
  218  reboot
  219  lsblk
  220  vim /etc/default/grub
  221  grub2-mkconfig -o /boot/grub2/grub.cfg
  222  mkfs.ext4 /dev/sda4
  223  mkfs.ext4 /dev/sda5
  224  mkfs.xfs /dev/sda6
  225  mkdir /ext4 /xfs
  226  vim /etc/fstab
  227  fdisk /dev/sda
  228  vim /etc/fstab
  229  reboot
  230  lsblk
  231  xfs_admin -L goat /dev/sda5
  232  vim /etc/fstab
  233  reboot
  234  mount
  235  blkid
  236  xfs_admin --help
  237  history
  238  cat /etc/default/grub
  239  fdisk /dev/sda
  240  tune2fs -L /dev/sda6
  241  tune2fs -L cow /dev/sda6
  242  reboot
  243  lsblk
  244  vim /etc/fstab
  245  tune2fs -L horse /dev/sda6
  246  tune2fs -L horse /dev/sda5
  247  vim /etc/fstab
  248  countdown 16
  249  poweroff
  250  yum repolist
  251  yum search nmap
  252  dnf install nmap
  253  cd /etc/yum.repos.d/
  254  ls
  255  rm -f *
  256  yum search zsh
  257  yum search nmap
  258  yum clean all
  259  yum search nmap
  260  cd /
  261  yum repolist
  262  df -h
  263  dd if=/dev/sr0 of=/centos83.iso bs=1M
  264  mkdir /repo
  265  vim /etc/fstab
  266  ls /repo
  267  mount -a
  268  ls /repo
  269  cd repo
  270  ls
  271  cd BaseOS/
  272  ls
  273  ls Packages/
  274  yum repolist
  275  cd /etc/yum.repos.d/
  276  vim base.repo
  277  vim appstream.repo
  278  yum repolist
  279  cd /repo
  280  ls
  281  seinfo
  282  yum provides */seinfo
  283  yum  install setools-console
  284  yum module list
  285  yum  module provides httpd
  286  yum module info httpd
  287  yum module info postgresql
  288  yum module info --profile postgresql
  289  yum module lsit postgresql
  290  yum module list postgresql
  291  yum module install postgresql:9.6/devel
  292  yum module install postgresql:9.6/server
  293  yum install httpd
  294  yum module enable postgresql:9.6
  295  yum module info --profile php
  296  yum module install php:7.2/devel
  297  yum module reset php
  298  yum module install --allowerasing php:7.3
  299  which yum
  300  which dnf
  301  ls -l /bin/yum /bin/dnf
  302  yum install -y bash-completion
  303  ip a
  304  ip route show
  305  ip route del default via 192.168.4.2
  306  ip route show
  307  ping nu.nl
  308  ip route add default via 192.168.4.2
  309  ping nu.nl
  310  cat /etc/resolv.conf
  311  rm /etc/resolv.conf
  312  ping nu.nl
  313  echo nameserver 192.168.4.2 >> /etc/resolv.conf
  314  ping nu.nl
  315  man ifconfig
  316  ip a a dev ens33 10.0.0.10/24
  317  ip a
  318  ping 10.0.0.10
  319  ifconfig
  320  which ifconfig
  321  rpm -qf /sbin/ifconfig
  322  yum remove $(rpm -qf /sbin/ifconfig)
  323  countdown 12
  324  cd
  325  systemctl status NetworkManager
  326  cd /etc/sysconfig/network-scripts/
  327  ls
  328  vim ifcfg-ens33
  329  nmtui
  330  ip a
  331  nmcli connection delete ens33
  332  nmcli connection add con-name newcon ifname ens33 ipv4.addresses 192.168.4.44/24 ipv4.gateway 192.168.4.2 ipv4.dns 192.168.4.2 ipv4.method manual
  333  nmcli connection add con-name newcon ifname ens33 ipv4.addresses 192.168.4.44/24 ipv4.gateway 192.168.4.2 ipv4.dns 192.168.4.2 ipv4.method manual type ethernet
  334  nmcli connection show
  335  nmcli connection up newcon
  336  ip a
  337  ping nu.nl
  338  history
  339  countdown 4
  340  nmcli con modify newcon +ipv4.addresses 10.11.12.90/24
  341  nmcli con up newcon
  342  ip a
  343  systemctl status tuned
  344  tuned-adm --help
  345  tuned-adm list
  346  tuned-adm profile latency-performance
  347  tuned-adm active
  348  sysctl -a
  349  sysctl -a | wc
  350  cd /usr/lib/tuned/latency-performance/
  351  ls
  352  vim tuned.conf
  353  mkdir /etc/tuned/sander
  354  cd ..
  355  cd virtual-guest/
  356  ls
  357  cp tuned.conf /etc/tuned/sander/
  358  cd ..
  359  cd latency-performance/
  360  cat tuned.conf >>/etc/tuned/sander/tuned.conf
  361  tuned-adm list
  362  tuned-adm profile sander
  363  cd
  364  fdisk /dev/sda
  365  lsblk
  366  pvcreate /dev/sda7
  367  xxd /dev/sda7 | less
  368  pvs
  369  vgcreate --help | less
  370  vgcreate -s 2M vgdata /dev/sda7
  371  vgs
  372  pvs
  373  lvcreate -L 1G -n lvdata vgdata
  374  lvcreate -L 1022M -n lvdata vgdata
  375  mkfs.ext4 /dev/vgdata/lvdata
  376  mount /dev/vgdata/lvdata /mnt
  377  df- h
  378  df -h
  379  countdown 12
  380  history
  381  df -h
  382  ls -l /dev/mapper/vgdata-lvdata /dev/vgdata/lvdata
  383  lvextend -r -l +50%FREE /dev/vgdata/lvdata
  384  vgs
  385  vgextend vgdata /dev/sda8
  386  vgs
  387  lvextend -r -l +50%FREE /dev/vgdata/lvdata
  388  df -h
  389  lvextend -L +100M /dev/vgdata/lvdata
  390  xfs_growfs /dev/vgdata/lvdata
  391  mount | grep lvdata
  392  resize2fs /dev/vgdata/lvdata
  393  df -h
  394  vim bonus-homework.txt
  395  top
  396  lvs
  397  top
  398  vmstat 2 10
  399  top
  400  fdisk /dev/sda
  401  mkswap /dev/sda9
  402  free -m
  403  swapon /dev/sda9
  404  free -m
  405  vim /etc/fstab
  406  swapoff /dev/sda9
  407  free -m
  408  swapon -a
  409  free -m
  410  history