LFCS dec22 day1

[root@localhost ~]# history
    1  w
    2  chvt 2
    3  exit
    4  chvt 3
    5  chvt 2
    6  ./countdown 16
    7  ./countdown 20
    8  groupadd sales
    9  id anna
   10  usermod -aG account anna
   11  useradd -G account anouk
   12  id lisa
   13  id linda
   14  rm -rf /data/sakes
   15  rm -rf /data/sales
   16  mkdir /data/sales
   17  chgrp sales /data/sales
   18  chmod 1770 /data/sales
   19  ls -ld /data/sales
   20  setfacl -R -m g:account:rX /data/sales
   21  history
   22  find / -name "hosts"
   23  find / -name "*hosts*"
   24  useradd -m -s /bin/bash linda
   25  su - linda
   26  find / -user linda
   27  mkdir /root/linda; find / -user linda -exec cp {} /root/linda/ \;
   28  find / -user linda
   29  history
   30  man touch
   31  find / -user linda -exec cp {} /root/linda/ \; | mkdir /root/linda
   32  find / -perm /4000
   33  ls -l /usr/bin/passwd
   34  ls -l /etc/shadow
   35  vim lab1.txt
   36  find / -type f -size +100M
   37  mkdir -p find/contents; find /etc -exec grep -l student {} \; -exec cp {} find/contents/ \; 2>/dev/null
   38  ls find/contents/
   39  find /etc/ -name '*' -type f | xargs grep '127.0.0.1'
   40  man find
   41  vim countdown
   42  chmod +x countdown
   43  ./countdown
   44  cat lab1.txt
   45  find / -perm /4000 2>/dev/null >/tmp/suid-files.txt
   46  mv /tmp/suid-files.txt /tmp/suid-files1.txt
   47  touch newfile
   48  chmod u+s newfile
   49  ls -l newfile
   50  find / -perm /4000 2>/dev/null >/tmp/suid-files2.txt
   51  diff /tmp/suid-files[12].txt
   52  diff /tmp/suid-files[12].txt > /tmp/suid-files.txt
   53  history
   54  sed -n 5p /etc/passwd
   55  echo hello > hellofile
   56  sed -i 's/hello/goedemiddag/g' hellofile
   57  cat hellofile
   58  vim hello2
   59  sed -i 's/hello/goedemiddag/' hello2
   60  cat hello2
   61  sed -i 's/hello/goedemiddag/g' hello2
   62  cat hello2
   63  sed -i -e '2d' hello2
   64  cat hello2
   65  diff /tmp/suid-files[12].txt
   66  cat /tmp/suid-files2.txt
   67  vim /tmp/suid-files1.txt
   68  diff /tmp/suid-files[12].txt
   69  diff -u /tmp/suid-files[12].txt
   70  dnf search diff
   71  sdiff /tmp/suid-files[12].txt
   72  awk -F : '{ print $4 }' /etc/passwd
   73  cut -d : -f 4 /etc/passwd
   74  awk -F : '/linda/ { print $4 }' /etc/passwd
   75  less /etc/passwd
   76  grep root /etc/shadow
   77  grep root /etc/passwd
   78  man 5 shadow
   79  grep root /etc/group
   80  grep wheel /etc/group
   81  useradd --help | less
   82  groupadd groupone
   83  groupadd grouptwo
   84  groupadd groupthree
   85  useradd -G grouptwo anna
   86  id anna
   87  usermod -G groupone anna
   88  id anna
   89  usermod -aG grouptwo anna
   90  id anna
   91  vim /etc/login.defs
   92  cd /etc/skel/
   93  ls
   94  ls -a
   95  touch hello
   96  ls -l
   97  useradd bob
   98  ls -la /home/bob
   99  rm hello
  100  cd
  101  cd /etc/pam.d/
  102  ls
  103  vim login
  104  vim system-auth
  105  vim /etc/securetty
  106  chvt 4
  107  cd /usr/lib64/security/
  108  ls
  109  man pam_securetty
  110  cd /etc/pam.d/
  111  vim login
  112  chvt 4
  113  cd
  114  ./countdown 15
  115  useradd -m -s /usr/bin/passwd -G wheel anna
  116  useradd -m -s /usr/bin/passwd -G wheel ana
  117  chage ana
  118  grep ana /etc/shadow
  119  cd /home/linda
  120  touch rootfile
  121  su - linda
  122  mkdir /data/sales
  123  mkdir -p /data/sales
  124  cd /data
  125  groupadd sales
  126  groupadd account
  127  ls -l
  128  chown :sales sales
  129  ls -l
  130  chmod 770 sales
  131  ls -l
  132  usermod -aG sales linda
  133  id linda
  134  useradd -G sales lisa
  135  id lisa
  136  su - lisa
  137  su - linda
  138  chmod g+s sales
  139  ls -l
  140  su - lisa
  141  su - linda
  142  chmod +t sales/
  143  ls -ld sales/
  144  su - linda
  145  chown linda sales
  146  ls -l
  147  su - linda
  148  history
  149  pwd
  150  cd
  151  cd /home/linda
  152  vim playme
  153  lsblk
  154  chmod +x playme
  155  su - linda
  156  chmod u+s playme
  157  ls -l playme
  158  history
  159  ls -ld /tmp
  160  cd /data/sales
  161  ls -l
  162  getfacl lisa2
  163  setfacl -R -m g:account:rX /data/sales
  164  ls -l
  165  getfacl lisa2
  166  touch newroot1
  167  getfacl newroot1
  168  setfacl -m d:g:account:rx /data/sales
  169  touch newroot2
  170  getfacl newroot2
  171  history
  172  echo the /etc/hosts file should be writeable by user anna without making any modifications to the basic permissions
  173  setfacl -m u:anna:rw /etc/hosts
  174  getfacl /etc/hosts
  175  cd
  176  pwd
  177  ls
  178  chattr +i newfile
  179  rm -f newfile
  180  whoami
  181  ls -l
  182  lsattr
  183  chattr -i newfile
  184  lsattr
  185  man chattr
  186  vim lab2.txt
  187  cat lab2.txt
  188  cd /data/sales
  189  touch salesfile{1..9}
  190  ls -l
  191  getfacl salesfile9
  192  dnf install seinfo
  193  dnf provides seinfo
  194  dnf install setools-console
  195  dnf install ansible-core
  196  ls -l $(which dnf) $(which yum)
  197  cd
  198  lsblk
  199  mount /dev/sr0 /mnt
  200  poweroff
  201  lsblk
  202  echo $(( 26 * 26 ))
  203  fdisk /dev/sda
  204  lsblk
  205  mkfs.ext4 /dev/sda5
  206  vim /etc/fstab
  207  mount -a
  208  mkdir /ext4
  209  mount -a
  210  poweroff
  211  ./countdown 12
  212  fdisk /dev/sda
  213  vim /etc/fstab
  214  reboot
  215  fdisk -l /dev/sda
  216  fdisk /dev/sda
  217  lsblk
  218  fdisk /dev/sdb
  219  mkfs.ext4 /dev/sdb4
  220  mount /dev/sdb4 /mnt
  221  lsblk
  222  fdisk /dev/sdb
  223  reboot
  224  mount /dev/sda4 /mnt
  225  lsblk
  226  df -h
  227  resize2fs /dev/sda4
  228  df -h
  229  vim /etc/fstab
  230  vim /etc/default/grub
  231  grub2-mkconfig -o /boot/grub2/grub.cfg
  232  reboot
  233  mount
  234  mount | grep rw
  235  mount | grep root
  236  mount -o remount,rw /
  237  vim /etc/fstab
  238  exit
  239  lsblk
  240  cat /etc/fstab
  241  blkid
  242  vim /etc/fstab
  243  tune2fs -L myfiles /dev/sda4
  244  blkid
  245  xfs_admin -L mywortel /dev/mapper/cs-root
  246  xfs_admin -L bootfs /dev/sda1
  247  umount /dev/sda1
  248  xfs_admin -L bootfs /dev/sda1
  249  vim /etc/fstab
  250  reboot
  251  blkid
  252  xfs_admin -L bootfs /dev/sda1
  253  blkid
  254  sync
  255  reboot
  256  history