coolbash oct20

[root@cool cool-bash]# history
    1  ps -eo pcpu,pid -o comm=
    2  ps -eo pcpu,pid -o comm= | sort -k1 -n -r | head -10
    3  ps -eo pcpu,pid -o comm= | sort -k1 -n -r | head -1 | awk '{ print $1 } '
    4  man test
    5  NUMBER=1
    6  [ -z $NUMBER ] && echo nUMBER is empty
    7  [ -z $NUMBER ] || echo NUMBER is provided
    8  test -z $NUMBER && echo NUMBER is empty
    9  test -z $MUMBER || echo NUMBER is provided
   10  test -z $NUMBER || echo NUMBER is provided
   11  [-z $NUMBER] || echo NUMBER is provided
   12  ls
   13  bash-scripting/countdown 12
   14  which mail
   15  which mail || yum install -y mailx
   16  cd cool-bash/
   17  vim 1_cpu-hog
   18  ls
   19  vim cg.sh
   20  ls
   21  vim 4_reboot-test.sh
   22  reboot
   23  yum install git -y
   24  git clone https://github.com/sandervanvugt/cool-bash
   25  cd cool-bash/
   26  ls
   27  ps aux | grep fire
   28  vim 1_cpu-hog
   29  cd ..
   30  git clone https://github.com/sandervanvugt/bash-scripting
   31  cd bash-scripting/
   32  ls
   33  vim script6
   34  chmod +x scr*
   35  ./script6 /usr/bin/blah
   36  cd ../cool-bash/
   37  vim 1_cpu-hog
   38  ls -l
   39  ./1_cpu-hog
   40  bash -x 1_cpu-hog
   41  vim 1_cpu-hog
   42  ./1_cpu-hog
   43  vim 1_cpu-hog
   44  ../bash-scripting/countdown 4
   45  vim cg.sh
   46  while true; do true; done &
   47  chmod +x cg.sh
   48  ./cg.sh
   49  vim cg.sh
   50  cat cg.sh
   51  fg
   52  cd cool-bash/
   53  vim 4_reboot-test.sh
   54  cd /tmp
   55  ls
   56  cd -
   57  history
   58  ./4_reboot-test.sh
   59  cd -
   60  ls
   61  vim 2_what_is_it
   62  cd ../bash-scripting/
   63  history | grep git
   64  vim script6
   65  vim script7
   66  ./countdown 13
   67  vim ma.sh
   68  vim ma.sh
   69  ./ma.sh
   70  vim ma.sh
   71  ./ma.sh
   72  vim ma.sh
   73  ./ma.sh
   74  echo $?
   75  vim ma.sh
   76  ./ma.sh
   77  echo $?
   78  vim ma.sh
   79  cd ../cool-bash/
   80  vim cg.sh
   81  vim cg2.sh
   82  vim 5_today.sh
   83  chmod +x cg2.sh
   84  ./cg2.sh
   85  ./5_today.sh
   86  time ./cg2.sh
   87  time ./5_today.sh
   88  time ./cg2.sh
   89  strace ./cg2.sh
   90  strace -c ./cg2.sh
   91  strace -c ./5_today.sh
   92  cat cg2.sh
   93  cat 5_today.sh
   94  history -w
   95  echo h >/proc/sysrq-trigger
   96  dmesg
   97  cd cool-bash/
   98  ls
   99  vim 7a_trap
  100  man 7 signals
  101  man 7 signal
  102  vim 7a_trap
  103  ./7a_trap
  104  ls -l /tmp/tm*
  105  vim 7a_trap
  106  vim 7b_trap
  107  ./7b_trap
  108  vim 7b_trap
  109  vim 8_makeusr
  110  vim 7b_trap
  111  ./7b_trap
  112  vim 7b_trap
  113  vim 8_makeusr
  114  ./8_makeusr -u 1100 bob
  115  vim 8_makeusr
  116  ./8_makeusr -u 1100 bob
  117  cat /etc/passwd
  118  vim 8_makeusr
  119  history