expr - solve an expression
rfkill (tool to enable and disable wireless devices)
lspci - list PCI hardware
ispell - cli spell check
last - list of last logged in users
tail - show the last 10 lines of a given file (argument 1)
stat / → *display file or file system status*
$ LANG=C stat /
File: /
Size: 4096 Blocks: 8 IO Block: 4096 directory
Device: 813h/2067d Inode: 2 Links: 18
Access: (0755/drwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2020-01-11 03:47:35.409987641 -0300
Modify: 2020-01-12 11:22:59.980393691 -0300
Change: 2020-01-12 11:22:59.980393691 -0300
Birth: 2020-01-11 03:33:52.000000000 -0300
asume next is G ?
word before = Tail , end with l
lang= so then its a g the end…
( you start with the last letter of the command before the post)
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It`s time to play the game again 
grub-customizer: a gui tool, that can edit the grub bootloader 
rmdir - remove direcory,
removes the folder if they are empty 
htop - top on steroids, and the easiest way I know to kill a process quickly without having to know the PID.
pkill - the easiest way I know to kill a process quickly without having to know the PID. 
logname - print current login name
exit
- exit [n] Exits the shell
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time - for example, measure how much time a command takes
Next is letter e 