coolbash feb21

  250  git clone https://github.com/sandervanvugt/cool-bash
  251  git clone https://github.com/sandervanvugt/bash-scripting
  252  cd bash-scripting/
  253  ls
  254  cd ../cool-bash/
  255  ls
  256  vim 1_cpu-hog
  257  ./1_cpu-hog
  258  bash -x 1_cpu-hog
  259  vim 1_cpu-hog
  260  ps -eo pcpu,pid -o comm= | sort -k1 -n -r | head -1 | awk '{print $3 }
  261  ps -eo pcpu,pid -o comm= | sort -k1 -n -r | head -1 | awk '{print $3 }'
  262  ps -eo pcpu,pid -o comm=
  263  ps -eo pcpu,pid -o comm= | sort -k1 -n -r q
  264  ps -eo pcpu,pid -o comm= | sort -k1 -n -r | head -1 | awk '{print $3 }'
  265  apt install shellcheck
  266  sudo apt install shellcheck
  267  shellcheck 1_cpu-hog
  268  vim 1_cpu-hog
  269  cd ../bash-scripting/
  270  ls
  271  vim script6
  272  ./script_6 /usr/bin/blah
  273  ./script6 /usr/bin/blah
  274  vim script6
  275  ./script6 /usr/bin/blah
  276  cd ../cool-bash/
  277  vim 1_cpu-hog
  278  man test
  279  vim 1_cpu-hog
  280  mail -s hello student
  281  sudo apt install mailutils
  282  vim 1_cpu-hog
  283  mail -s hello student
  284  vim 1_cpu-hog
  285  logger HELLO
  286  journalctl
  287  vim 1_cpu-hog
  288  ./1_cpu-hog
  289  journalctl -F
  290  journalctl -f
  291  vim 1_cpu-hog
  292  ../bash-scripting/countdown 4
  293  vim cm.sh
  294  ls
  295  cd ../bash-scripting/
  296  ls
  297  vim kube-setup.sh
  298  history | grep git
  299  vim kube-setup.sh
  300  ./kube-setup.sh
  301  cd ../cool-bash/
  302  ../bash-scripting/countdown 12
  303  ls
  304  vim 4_reboot-test.sh
  305  vim ../bash-scripting/kube-setup.sh
  306  sudo passwd root
  307  sudo -i
  308  sudo -i
  309  sudo -i
  310  cd cool-bash/
  311  vim 4_reboot-test.sh
  312  sudo vim /etc/systemd/system/rclocal.service
  313  sudo systemctl enable --now rclocal.service
  314  sudo vim /etc/systemd/system/rclocal.service
  315  sudo vim /usr/local/bin/myscript
  316  chmod +x /usr/local/bin/myscript
  317  sudo chmod +x /usr/local/bin/myscript
  318  sudo reboot
  319  ls -ltr /tmp
  320  cd cool-bash/
  321  ls
  322  vim cm2.sh
  323  ls -l
  324  chmod _x cm2.sh
  325  chmod +x cm2.sh
  326  sudo -i
  327  exit
  328  ls /tmp
  329  cd cool-bash/
  330  vim cm2.sh
  331  cat /tmp/after-reboot
  332  ls
  333  vim setup-container.sh
  334  ./setup-container.sh
  335  vim setup-container.sh
  336  ./setup-container.sh
  337  ls
  338  man sed
  339  history
  340  strace -f -c ./5_subst-sed.sh
  341  strace -c ./5_subst-sed.sh
  342  ls
  343  vim 8_makeusr
  344  ls
  345  ./3_choosedir
  346  vim 3_choosedir
  347  ls
  348  vim lab6.sh
  349  chmod +x 10_multiplication-tables.sh
  350  history
  351  exit
  352  cd cool-bash/
  353  vim setup-container.sh
  354  ../bash-scripting/countdown 12
  355  ls
  356  vim 2_cv
  357  ./2_cv
  358  echo $?
  359  ./2_cv /etc/hosts
  360  ./2_cv /tmp
  361  [ -d /tmp ] && echo its a dir
  362  vim 2_cv
  363  ./2_cv /tmp
  364  vim 2_cv
  365  ./2_cv /tmp
  366  ls
  367  vim 7a_trap
  368  man 7 signals
  369  man 7 signal
  370  ./7a_trap
  371  ls -l /tmp/tmpdata
  372  ./7b_trap
  373  vim 7b_trap
  374  help
  375  which [
  376  ls -l $(which [)
  377  ls -l $(which test)
  378  man bash
  379  ls
  380  vim 5_subst.sh
  381  echo bob > users
  382  ./5_subst.sh
  383  cat users
  384  vim 5_subst.sh
  385  echo bob > users
  386  echo bobbberddebob > users
  387  echo whoisthebob >>users
  388  echo bob >> users
  389  cp users users.sed
  390  time 5_subst.sh
  391  time ./5_subst.sh
  392  cp 5_subst.sh 5_subst-sed.sh
  393  vim 5_subst-sed.sh
  394  time ./5_subst-sed.sh
  395  time ./5_subst.sh
  396  strace -c ./5_subst-sed.sh
  397  strace -c ./5_subst.sh
  398  vim 5_subst.sh
  399  strace ./5_subst-sed.sh
  400  exit
  401  history