Originally Posted by Raakh5
chown 8618718235810:8618718235810 /home/8618718235810
why this is written 8618718235810:8618718235810 in chown command? Is this command not enough to set permission "/home/8618718235810"
"/home/8618718235810" is not a command. It is the folder which permission you want to change and is used as argument for the chown command.
Because root created the directory "/home/8618718235810", it is then owned by root:root. For the user 8618718235810 to be able to login, this folder needs to be owned by him and his group (user:group).
If you don't understand, what a command is doing, type
and in this case
into a terminal and read.