RHCSA day1 jan23

[root@localhost ~]# history
    1  ./countdown 12
    2  vim counter
    3  vim countdown
    4  chmod +x countdown
    5  ./countdown 10
    6  tar cvzf /root/archive.tgz /etc
    7  history
    8  grep '[[:space:]]' /etc/dnsmasq.conf
    9  grep '[[:space:]]' /etc/dnsmasq.conf | sort
   10  grep '[[:space:]]' /etc/dnsmasq.conf | sort > /var/tmp/dnslines.txt
   11  useradd bob
   12  find / -user bob
   13  find / -user bob -type f
   14  mkdir /root/userfiles; find / -user bob -type f -exec cp {} /root/userfiles/ \;
   15  ls -a /root/userfiles/
   16  ls -al /root/userfiles/
   17  vim simple
   18  grep -v '' simple
   19  grep -v ' ' simple
   20  grep '[[:space:]]' simple
   21  history
   22  vim simple
   23  grep '[[:space:]]' simple
   24  grep '^$' simple
   25  grep -v '^$' simple
   26  grep -v '^$' simple | grep -v '[[:space:]]'
   27  grep -v '^$' simple | grep -v ' '
   28  grep -v '^$' simple | grep -v '[[:space:]]' | sort
   29  grep -v '^$' simple | grep -v '[[:space:]]' | sort > /root/sorted
   30  history
   31  vim countdown
   32  chmod -x countdown
   33  countdown
   34  echo $PATH
   35  ./countdown
   36  ls -l countdown
   37  chmod +x countdown
   38  ./countdown
   39  man let
   40  echo $(( 2 * 8 ))
   41  visudo
   42  cd /etc/sudoers.d/
   43  vim linda
   44  which passwd
   45  which usermod
   46  which useradd
   47  vim linda
   48  useradd linda
   49  passwd linda
   50  su - linda
   51  vim linda
   52  su - linda
   53  vim linda
   54  su - linda
   55  cd
   56  ./countdown 12
   57  cat /etc/passwd
   58  cd /etc/skel/
   59  ls
   60  ls -a
   61  vim /etc/login.defs
   62  touch hello
   63  cd
   64  useradd bill
   65  grep bill /etc/passwd
   66  grep bill /etc/shadow
   67  grep linda /etc/shadow
   68  cd /
   69  touch nologin
   70  rm nologin
   71  grep 1004 /etc/group
   72  grep wheel /etc/group
   73  groupadd sales
   74  usermod -aG sales student
   75  id student
   76  lid -g sales
   77  grep sales /etc/group
   78  chage bill
   79  cd
   80  ./countdown 7
   81  userdel --help
   82  userdel bob
   83  useradd bob
   84  userdel -rf bob
   85  ls -l /home
   86  useradd bob
   87  vim /etc/login.defs
   88  cd /etc/skel/
   89  touch newfile
   90  groupadd profs
   91  groupadd students
   92  useradd --help | less
   93  useradd -G profs anna
   94  useradd -G profs anouk
   95  for i in user{1..10}; do useradd $i; done
   96  cat /etc/passwd
   97  usermod -aG students lisa
   98  usermod -aG students linda
   99  cd
  100  ls -l
  101  touch afile
  102  ls -l
  103  chmod 640 afile
  104  ls -l afile
  105  cd /home/linda
  106  touch rootfilee
  107  su - linda
  108  mkdir -p /data/profs
  109  cd /data
  110  ls -l
  111  chown anna:profs profs
  112  ls -l
  113  cd profs
  114  mkdir 2023
  115  mkdir 2022
  116  touch 2022/one
  117  touch 2022/two
  118  touch 2023/two
  119  touch 2023/one
  120  ls -l
  121  chown -R anna:profs *
  122  ls -l
  123  chown -R g+x *
  124  chmod -R g+x *
  125  ls -l
  126  cd 2022/
  127  ls
  128  ls -l
  129  cd ..
  130  chmod -R g-x *
  131  chmod -R g+X *
  132  ls -l
  133  ls -l 2022/
  134  history
  135  su - anna
  136  chmod g+s /data/profs
  137  ls -ld /data/profs
  138  su - anna
  139  su - anouk
  140  ls -ld .
  141  chmod g+w .
  142  su - anouk
  143  chmod +t /data/profs
  144  ls -ld /data/profs
  145  su - anouk
  146  cd /home
  147  ls -l
  148  chmod +t anouk
  149  cd anouk
  150  touch rootfile
  151  ls -l rootfile
  152  su - anouk
  153  chmod -t .
  154  touch removeme
  155  chattr +i remove
  156  chattr +i removeme
  157  rm -f removeme
  158  ls -l
  159  lsattr
  160  chattr -i removeme
  161  rm -f removeme
  162  history
  163  poweroff
  164  lsblk
  165  exit
  166  fdisk /dev/sda
  167  lsblk
  168  mkfs.ext4 /dev/sda3
  169  vim /etc/fstab
  170  mount -a
  171  mkdir /myfile
  172  mount -a
  173  mv /myfile/ /myfiles
  174  mount -a
  175  mount
  176  lsblk
  177  df -h
  178  findmnt
  179  lsblk
  180  history