ITGG scripting 2

#!/bin/bash

echo this is done before the reboot
echo to prepare anything that you want to do
[ -f /tmp/after-reboot ] && rm -f /tmp/after-reboot

cat << REBOOT >> /root/completeme.sh
touch /tmp/after-reboot

rm -f /etc/profile
mv /etc/profile.bak /etc/profile
echo DONE
REBOOT

chmod +x /root/completeme.sh
cp /etc/profile /etc/profile.bak
echo /root/completeme.sh >> /etc/profile

[ -f /tmp/after-reboot ] && echo testfile exists && exit 9
echo we now know that testfile does not exist

reboot

#######[student@localhost bash-scripting]$ history
    1  sudo dnf install -y git vim
    2  git clone https://github.com/sandervanvugt/ckad
    3  cd ckad/
    4  ls
    5  ./kube-setup.sh
    6  sudo reboot
    7  cd bash-scripting/
    8  ./countdown 3
    9  tail ckad/kube-setup.sh
   10  minikube start --memory 4096 --vm-driver=kvm2
   11  git clone https://github.com/sandervanvugt/bash-scripting
   12  cd bash
   13  cd bash-scripting/
   14  ls
   15  vim script1
   16  ls
   17  echo $?
   18  ls ioehrgoiheriog
   19  echo $?
   20  ls /root/
   21  echo $?
   22  script1
   23  echo $PATH
   24  pwd
   25  ./script1
   26  ls -l
   27  chmod +x script*
   28  ./script1
   29  vim script2
   30  ./script2
   31  cat script2
   32  pwd
   33  source script2
   34  cd -
   35  . script2
   36  sudo dnf search network-scripts
   37  sudo dnf install network-scripts
   38  vim /etc/init.d/network
   39  vim script2b
   40  vim colors
   41  chmod +x script2b
   42  ./script2b
   43  vim colors
   44  ./script2b
   45  cat script2b
   46  cat colors
   47  ls
   48  vim script3
   49  ./script3 a b c d e f g h i j k l m n b
   50  cat script3
   51  vim script4
   52  ./script4 a b c d e
   53  cat script4
   54  vim script4
   55  ./script4 a b c d e
   56  vim script4
   57  vim script5
   58  cd /lib/modules
   59  ls
   60  uname -r
   61  cd `uname -r`
   62  cd -
   63  cd $(uname -r)
   64  cd
   65  cd bash-scripting/
   66  ls
   67  vim script6
   68  cat script6
   69  ./script6 /usr/bin/blah
   70  vim script6
   71  ./script6 /usr/bin/blah
   72  ./countdown 12
   73  vim countdown
   74  ./countdown 0
   75  vim countdown
   76  vim script7
   77  ./script7
   78  vim script8
   79  sudo useradd alex
   80  ./script8 alex
   81  sudo useradd alexander
   82  ./script8 alex
   83  ./script8 lex
   84  vim script8
   85  ./script8 lex
   86  ./script8 alex
   87  vim script8
   88  ./script8 alex
   89  ./script8 lex
   90  vim script8
   91  ./script8 lex
   92  ./script8 alex
   93  vim script8
   94  vim script9
   95  man test
   96  vim script9
   97  ./script9
   98  echo $?
   99  vim script9
  100  ./script9
  101  echo $?
  102  vim script9b
  103  chmod +x script9b
  104  ./script9b
  105  ./script9b j
  106  vim script9b
  107  ./script9b blah
  108  ./script9b /etc
  109  ./script9b /etc/hosts
  110  vim script9b
  111  ./script9b /etc
  112  ./script9b /etc/hosts
  113  vim script9b
  114  ./script9b /etc/hosts
  115  vim script9b
  116  ./script9b /etc/hosts
  117  vim script9b
  118  [-f /etc/hosts] && echo its a file
  119  history
  120  cat script9b
  121  vim script10
  122  ./countdown 12
  123  vim script10
  124  ./script10
  125  bash -x script10
  126  vim script10
  127  ./script10
  128  bash -x ./script10
  129  vim script10
  130  ./script10 1
  131  vim script10
  132  ./script10 1
  133  vim script10
  134  ./script10 5
  135  vim script10
  136  man test
  137  vim script10
  138  vim script11
  139  ./script11
  140  vim script11
  141  echo hello | tr a-z A-Z
  142  echo hello | tr [:lower:] [:upper:]
  143  vim script11
  144  ./script11
  145  vim script11
  146  vim script11b
  147  chmod +x script11b
  148  ./script11b
  149  vim script11
  150  ls
  151  vim reboot-test.sh
  152  sudo reboot-test.sh
  153  sudo -i
  154  cd bash-scripting/
  155  ls
  156  cat reboot-test.sh
  157  history