I changed my password on ubuntu.
Before changing ●●●● ⇛ After changing ●●●●●●●●●●●
After all, I thought that 4 letters would be better, so I decided to return to ●●●●.
When I want to change it, I can't press change. (゚ Д ゚)
Password is too short. It is .

I tried it on the terminal.
$ sudo passwd -f
It was no good (^ ^;)

I looked it up on google.
passwd short password
How to set a short password on Ubuntu?
$ sudo passwd [username]
Replace [Username] with the username whose password you want to change.
$ sudo passwd ichiri
[sudo]ichiri password: #Enter your current password
new password: #new passwordを入力
Please re-enter your new password: #Re-enter new password(Be careful)
passwd:Password updated correctly#success
$