bash scripting jan23

[root@localhost bash-scripting]# history
    1  history -w
    2  history
    3  cat /etc/os-release
    4  git clone https://github.com/sandervanvugt/bash-scripting
    5  echo $PATH
    6  env
    7  echo $USER
    8  key=value
    9  echo $key
   10  bash
   11  export key=value
   12  bash
   13  vim /etc/profile
   14  vim /etc/bashrc
   15  echo $key
   16  echo $key1
   17  echo ${key}1
   18  echo $?
   19  ls oihoiuhiu
   20  echo $?
   21  vim countdown
   22  countdown
   23  ./countdown
   24  ls -l countdown
   25  chmod +x countdown
   26  ./countdown 1
   27  vim countdown
   28  nano countdown
   29  history
   30  cat countdown
   31  vim countdown
   32  ./countdown 12
   33  vim countdown
   34  ./countdown
   35  ehco $?
   36  echo $?
   37  vim countdown
   38  ./countdown
   39  echo $?
   40  ./countdown 12
   41  which passwd
   42  type passwd
   43  type ls
   44  type echo
   45  help
   46  strace -c ls *
   47  strace -c echo *
   48  echo the current $SHELL is set to $SHELL
   49  echo the current '$SHELL' is set to $SHELL
   50  echo the current \$SHELL is set to $SHELL
   51  echo the current "$SHELL" is set to $SHELL
   52  ls -l `which ls`
   53  ls -l `which passwd`
   54  ls -l $(which passwd)
   55  which echo
   56  type echo
   57  declare -r ANSWER=yes
   58  echo $ANSWER
   59  ANSWER=no
   60  cd bash-scripting/
   61  history grep git
   62  history | grep git
   63  ls
   64  vim readtit
   65  chmod +x *
   66  ./readtit
   67  cat readtit
   68  . readtit
   69  . <(kubectl completion bash)
   70  cd
   71  cd bash-scripting/
   72  ls
   73  vim setcolor.sh
   74  vim colors
   75  vim setcolor.sh
   76  chmod +x setcolor.sh
   77  ./setcolor.sh
   78  cat setcolor.sh
   79  cat colors
   80  cd /etc/sysconfig/
   81  ls
   82  cat selinux
   83  cd
   84  cd bash-scripting/
   85  vim script3
   86  ./script3 a b c d e f g h i j k l
   87  true --help
   88  true -h
   89  vim script4
   90  type true
   91  /usr/bin/true --help
   92  cp /usr/bin/true /usr/local/bin/sander
   93  /usr/local/bin/sander --help
   94  vim script4
   95  ./script4 a b c d
   96  cat script4
   97  vim mkusers
   98  chmod +x mkusers
   99  ./mkusers bob bill anita
  100  ./mkusers
  101  echo $?
  102  vim backmeup
  103  chmod +x backmeup
  104  ./backmeup
  105  ls -l /tmp/etc*
  106  uname -r
  107  find / -type d -name $(uname -r)
  108  cd /usr/lib/modules
  109  ls -l
  110  cd
  111  ./countdown 12
  112  cd bash-scripting/
  113  ls
  114  ls -l setup*
  115  vim setupsvc
  116  vim setupftp-test
  117  systemctl disable --now firewalld
  118  bash -x setupftp-test
  119  vim /etc/vsftpd/vsftpd.conf
  120  systemctl restart vsftpd
  121  cp setupftp-test setupftpclient
  122  vim setupftpclient
  123  ./setupftpclient
  124  ls
  125  rm -f hosts
  126  bash -x setupftpclient
  127  ls -l hosts
  128  vim script6
  129  ./script6 /usr/bin/blah
  130  vim script6
  131  ./script6 /usr/bin/blah
  132  vim script7
  133  cd many
  134  mkdir many
  135  cd many
  136  touch file{1..100}
  137  ls
  138  for i in *; do echo $1; done
  139  for i in *; do echo $i; done
  140  for i in *; do mv $i ${i#file}; done
  141  ls
  142  man test
  143  test -f bogus
  144  echo $?
  145  test -f 12
  146  echo $
  147  echo $?
  148  [ -f 12 ]
  149  echo $?
  150  [ -f 1eee2 ]
  151  echo $?
  152  [[ -f 1eee2 ]]
  153  echo $?
  154  [[ -f 12 ]]
  155  echo $?
  156  if [ -f /etc/host ]; then echo it exists; fi
  157  if [ -f /etc/hosts ]; then echo it exists; fi
  158  test -f /etc/hosts && echo it exists
  159  test -f /etc/host && echo it exists
  160  test -f /etc/host ; echo it exists
  161  if [ -d /etc ] && [ -x /etc ]; then echo yes; fi
  162  mkdir /blah
  163  chmod -x /blah
  164  ls -ld /blah
  165  if [ -d /blah ] && [ -x /blah ]; then echo yes; fi
  166  bash -x if [ -d /blah ] && [ -x /blah ]; then echo yes; fi
  167  vim iftest
  168  bash -x iftest
  169  bash -x iftest /etc
  170  bash -x iftest /blah
  171  bash -xc 'if [ -d /tmp/etc ] && [ -x /tmp/etc ]; then echo yes; fi'
  172  bash -c 'if [ -d /tmp/etc ] && [ -x /tmp/etc ]; then echo yes; fi'
  173  bash -c 'if [ -d /tmp ] && [ -x /tmp ]; then echo yes; fi'
  174  cd ..
  175  ./countdown 12
  176  vim multiline
  177  vim multline
  178  chmod +x multline
  179  ./multline
  180  vim multline
  181  ./multline
  182  cat multline
  183  cd many/
  184  touch 31-aug-99-file
  185  touch 31.08.99-file
  186  cd ..
  187  vim else1
  188  vim else2
  189  vim numcheck
  190  ./numcheck
  191  bash -x numcheck
  192  ls -la /usr/bin > binaries && cat binaries && cat /etc/hosts
  193  vim for
  194  ls
  195  vim case
  196  echo hgello | tr [:lower:] [:upper:]
  197  echo hgello | tr [a-k] [l-z]
  198  echo hgello | tr [a-z] [A-Z]
  199  vim case
  200  ./case
  201  vim case
  202  ./case
  203  vim script11
  204  ./script11 1
  205  vim script11
  206  ./script11
  207  bash -x script11
  208  vim script11
  209  bash -x script11 1
  210  vim script11
  211  ./script11 1
  212  vim script11
  213  ./script11 1
  214  vim backout
  215  vim convert
  216  history