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cat /etc/passwd

root:x:0:0:root:/root:/bin/bash

# 1) The first root is the username.
# 2) The character x is used as a placeholder for password.
# 3) 0 is the user ID for this user.
# 4) 0 is the group ID for this user.
# 5) The next root is a comment about this user.
# 6) /root is the home directory for this user.
# 7) And finally /bin/bash is the shell for this user.

ls -l

-rw-r--r-- 1 username groupname 1031 Nov 18 09:22 /etc/passwd

# 1) The first "-" is type of file (d - directory, s - special file, and - for a regular file);               
# 2) The next three chars (rw-) define the owner’s permission to the file.
# 3) The next three chars (r–) are the permissions for the members of the same group as the file owner.
# 4) The last three characters (r–) show the permissions for all other users

# Print tree of nested folders
namei -om /home/username/website/public