[root@linfun2 dev]# history
    1  history -w
    2  cd ..
    3  ip a
    4  yum install kernel-doc
    5  cd /usr/share/doc/kernel-doc-4.18.0/
    6  ls
    7  cd Documentation/
    8  ls
    9  ls -l
   10  mount
   11  cd /proc
   12  ls
   13  cd 2233
   14  ls
   15  cat cmdline
   16  cd fd
   17  ls -l
   18  cd ..
   19  cat status
   20  history
   21  ls
   22  cat syscall
   23  cd ..
   24  ls
   25  cd sys
   26  ls
   27  cd kernel/
   28  ls
   29  cat pid_max
   30  echo $(( 4194304 * 2 ))
   31  echo $(( 4194304 * 2 )) > pid_max
   32  cat tainted
   33  cd ../vm/
   34  ls
   35  cat swappiness
   36  echo 50 > swappiness
   37  cat swappiness
   38  cd ../..
   39  ls
   40  less cpuinfo
   41  less meminfo
   42  cd
   43  ls
   44  cd luth/
   45  ls
   46  ./countdown 13
   47  free -m
   48  less /proc/meminfo
   49  lslbk
   50  lsblk
   51  ls /dev/
   52  ls -l sda1
   53  cd /dev
   54  ls -l sda*
   55  less /proc/partitions
   56  cd /proc
   57  less devices
   58  lsmod | grep sd
   59  cd /dev
   60  ls -l
   61  ls -l | less
   62  history
   63  ldd $(which ls)
   64  ps aux | grep dbsu
   65  ps aux | grep dbus
   66  ps aux | grep firefox
   67  cd /proc/5882/fd
   68  ls
   69  ls -l
   70  cat < /etc/hosts
   71  cat > somewhere
   72  cat /etc/hosts > somewhere
   73  pwd
   74  cat /etc/hosts > /tmp/somewhere
   75  ls kuerhgkuhekuhiu 2> /tmp/error
   76  cd
   77  luth/countdown 12
   78  cd /proc/
   79  cd 2539
   80  less status
   81  cd
   82  git clone git://git.sv.gnu.org/coreutils
   83  ls
   84  cd coreutils/
   85  ls
   86  cd src/
   87  ls
   88  less ls.c
   89  cd /
   90  cd /etc
   91  vim ld.so.conf
   92  cd ld.so.conf.d/
   93  l;s
   94  ls
   95  vim kernel-4.18.0-193.el8.x86_64.conf
   96  ls -l
   97  cd
   98  strace cat /etc/hosts
   99  ls
  100  cd cool-bash/
  101  ls
  102  less 5_today.sh
  103  less 5b_today.sh
  104  strace -c 5_today.sh
  105  strace -c ./5_today.sh
  106  strace -c ./5b_today.sh
  107  history
  108  man man
  109  man 2 intro
  110  man 2 syscall
  111  man 2 syscalls
  112  man 2 mmap
  113  yum install -y ltrace
  114  ltrace ls
  115  man 7 signal
  116  dd if=/dev/zero of=/dev/null
  117  bg
  118  kill -s USR1 $(pidof dd)
  119  fg
  120  man 2 wait
  121  cd /proc/2962
  122  ls
  123  less status
  124  less maps
  125  cat cmd
  126  cat cmdline
  127  lsof
  128  cd ..
  129  ps aux | grep fire
  130  cd 5882/
  131  ls
  132  less maps
  133  lsof | grep mozavutil.so
  134  ls -l /dev/*/fd
  135  ls -l /proc/*/fd
  136  cd
  137  luth/countdown 13
  138  udevadm monitor
  139  mount | grep sys
  140  cd /sys
  141  ls
  142  cd devices/
  143  ls
  144  cd cpu/
  145  ls
  146  cd ../..
  147  ls
  148  cd bus
  149  ls
  150  cd cpu/
  151  ls
  152  cd devices
  153  ls
  154  cd cpu0/
  155  ls
  156  cat online
  157  cd
  158  cd /dev
  159  ls sd*
  160  ls -l sd*
  161  rm sdb1
  162  mknod --help
  163  mknod sdb1 b 8 17
  164  ls -l sd*
  165  chown root:disk sdb1
  166  chmod 660 sdb1
  167  mount /dev/sdb1 /mnt
  168  less /proc/devices
  169  lspci -k
  170  lspci -k | less
  171  cd /sys/devices/
  172  ls
  173  udevadm info --query=all --name=/dev/sda | less
  174  echo "- - -" > /sys/class/scsi_host/host0/scan
  175  cd /lib/udev/rules.d/
  176  ls
  177  vim 70-printers.rules
  178  cd
  179  cd /etc/udev/rules.d/
  180  ls
  181  cp /root/luth/50-custom.rules
  182  cp /root/luth/50-custom.rules .
  183  vim 50-custom.rules
  184  systemctl restart systemd-udevd
  185  udevadm monitor
  186  vim 50-custom.rules
  187  journalctl | grep CUSTOMU
  188  cd /dev/usb/
  189  ls
  190  ls -l
  191  man -k udev
  192  man -k systemd
  193  cd
  194  ln /etc/hosts myhosts
  195  ls -il /etc/hosts myhosts
  196  cd /boot
  197  mount | grep boot
  198  ls -i
  199  debugfs /dev/sda1
  200  ls
  201  cat file.dump
  202  cd /dev
  203  ls -Z
  204  history