[root@localhost bash-scripting]# cat script2b
#!/bin/bash

. colors
echo the color is $COLOR


[root@localhost bash-scripting]# cat colors
COLOR=red

[root@localhost bash-scripting]# cat script4b
#!/bin/bash

for i in "$@"
do
	echo useradd $i
done

root@localhost bash-scripting]# cat script9b
#!/bin/bash
#
# documentation
# exit code 3 means no argument provided

if [ -z $1 ]
# if test -z $1
then
	echo please enter a value
	read VALUE
else
	VALUE=$1
fi

echo the argument is $VALUE

[root@localhost bash-scripting]# cat script11
#!/bin/bash

echo are you good?

read GOOD

GOOD=$(echo $GOOD | tr [:upper:] [:lower:])

case $GOOD in
yes)
	echo that\'s nice
	;;
no)
	echo that\'s not so nice
	;;
*)
	echo okay
	;;
esac

scripting/
    3  ls
    4  vim script1
    5  script1
    6  echo $PATH
    7  exit
    8  echo $PATH
    9  ./script1
   10  cd bash-scripting/
   11  ./script1
   12  ls -l
   13  chmod +x script1
   14  ./script1
   15  cat script1
   16  ls -l script1
   17  echo $?
   18  ls kiwhgiughwiurghv
   19  echo $?
   20  ./script1
   21  bash script1
   22  sh script1
   23  cat script1
   24  history
   25  chmod -x script1
   26  bash script1
   27  ./script1
   28  chmod +x script1
   29  sh script1
   30  which sh
   31  which bash
   32  ls -l /usr/bin/sh /usr/bin/bash
   33  vim script2
   34  ./script2
   35  chmod +x script*
   36  ./script2
   37  cat script2
   38  pwd
   39  vim script2
   40  source script2
   41  ls
   42  cd bash-scripting/
   43  vim script2
   44  source script2
   45  cd bash-scripting/
   46  source script2
   47  cd -
   48  . script2
   49  cd -
   50  vim script2b
   51  chmod +x script2b
   52  vim colors
   53  ./script2b
   54  chmod +x script2b
   55  vim script2b
   56  vim colors
   57  ./script2b
   58  yum provides */network
   59  yum provides */network | grep init.d
   60  yum provides */network | grep -B 4 init.d
   61  yum install -y network-scripts
   62  cat script2b
   63  cat colors
   64  cat script2
   65  history
   66  cd /etc/init.d/
   67  ls
   68  vim network
   69  ls
   70  pwd
   71  cd /etc/sysconfig/
   72  ls
   73  vim network
   74  cd /root/bash-scripting/
   75  ./countdown 12
   76  cat script2
   77  cat script2b
   78  cat colors
   79  vim countdown
   80  echo $(( 2 + 2 ))
   81  echo $(( 2 * 42 ))
   82  echo $(( 42 /2 ))
   83  vim script3
   84  cat script3
   85  ./script3 a b c d e f g h  i j k l m
   86  sleep 5; echo hello
   87  vim script4
   88  cat script3
   89  vim script4
   90  vim ~/.vimrc
   91  vim script4
   92  ./script4 a b c d e
   93  vim script4b
   94  chmod +x script4b
   95  ./script4b bob bill bea
   96  vim script4b
   97  ./script4b bob bill bea
   98  cat script4
   99  cat script4b
  100  vim script3
  101  ./script3 a b c
  102  vim script3
  103  vim script5
  104  cd /lib/modules
  105  ls
  106  uname -r
  107  cd `uname -r`
  108  cd ..
  109  cd $(uname -r)
  110  which vim
  111  ls -l /usr/bin/vim
  112  ls -l $(which vim)
  113  cd
  114  cd bash-scripting/
  115  vim script5
  116  vim script6
  117  cat script6
  118  ./script6 /usr/bin/blah
  119  vim script6
  120  ./script6 /usr/bin/blah
  121  vim script6
  122  MYNAME="sander van vugt"
  123  echo $MYNAME
  124  MYPATH="$PATH"
  125  echo $MYPATH
  126  echo 'uname -r'
  127  echo `uname -r`
  128  vim script6
  129  vim script7
  130  ./script7
  131  vim script7
  132  vim script8
  133  cut -d : -f 1 /etc/passwd
  134  vim script8
  135  vim grepfile
  136  grep alex grepfile
  137  grep xander grepfile
  138  grep ^alex$ grepfile
  139  useradd linda
  140  useradd belinda
  141  useradd melinda
  142  grep linda /etc/passwd
  143  grep ^linda$ /etc/passwd
  144  cut -d : -f 1 /etc/passwd | grep ^linda$ /etc/passwd
  145  cut -d : -f 1 /etc/passwd | grep ^linda$
  146  vim script8
  147  ./script8
  148  vim script8
  149  ./script8 linda
  150  ./script8 inda
  151  vim script8
  152  cat script8
  153  cut -d : -f /etc/passwd | grep ^linda$ >/dev/null && echo she exists || echo she doesnt exist
  154  cut -d : -f 1 /etc/passwd | grep ^linda$ >/dev/null && echo she exists || echo she doesnt exist
  155  cut -d : -f 1 /etc/passwd | grep ^pinda$ >/dev/null && echo she exists || echo she doesnt exist
  156  cat script8
  157  (cut -d : -f 1 /etc/passwd | grep ^pinda$ >/dev/null && echo she exists) || echo she doesnt exist
  158  (cut -d : -f 1 /etc/passwd | grep ^linda$ >/dev/null && echo she exists) || echo she doesnt exist
  159  grep ^alex$ grepfile
  160  grep ^linda$ /etc/passwd
  161  vim script8 script8b
  162  vim script8b
  163  cp script8 script8b
  164  vim script8b
  165  ./script8b linda
  166  vim script9
  167  man test
  168  vim script9
  169  ./script9
  170  echo $?
  171  ./script9 yes
  172  cp script9 script9b
  173  vim script9b
  174  cat script9b
  175  vim script10
  176  ./script10 1
  177  bash -x ./script10 1
  178  vim script10
  179  bash -x ./script10 1
  180  vim script10
  181  bash -x ./script10 1
  182  vim script10
  183  ./script10 1
  184  ./script10 12
  185  ls
  186  vim script10
  187  vim script11
  188  ./script11
  189  vim script11
  190  ./script11
  191  vim script11
  192  echo HELLO | tr [:upper:][:lower:]
  193  echo HELLO | tr [:upper:] [:lower:]
  194  echo HELLO | tr A-Z a-z
  195  vim script11
  196  ./script11
  197  cat script11
  198  ls
  199  vim kube-setup.sh
  200  echo here document
  201  ls
  202  vim lab53.sh
  203  vim lab97.sh
  204  vim rene
  205  vim script11
  206  vim rene
  207  file scripts
  208  vim vbox-setup.sh
  209  cd ..
  210  git clone https://github.com/sandervanvugt/kube4h
  211  git clone https://github.com/sandervanvugt/kub4h
  212  cd kub4h/
  213  ls
  214* vim kube-setup.s
  215  cd ..
  216  git clone https://github.com/sandervanvugt/kubernetes
  217  cd kubernetes/
  218  vim kube-setup.sh
  219  hostnamectl
  220  vim kube-setup.sh
  221  cd
  222  history