ls -la listing + view permissions
pwd print working directory
/var/log/wtmp
utmp, wtmp, btmp and variants such as utmpx, wtmpx and btmpx are files on Unix-like systems that keep track of all logins and logouts to the system.
nmap nmap -v -A nccsoft.vn : Check open port, OS, ... prevent penetrate attack
https://www.howtogeek.com/117435/htg-explains-the-linux-directory-structure-explained/
Table:
| Tables | Are | Cool |
|---|---|---|
| col 1 is | left-aligned | $1600 |
| col 2 is | centered | $12 |
| col 3 is | right-aligned | $1 |
P5j
Credit: https://github.com/bmoren/p5js-cheat-sheet/
