Listar usuario:

getent passwd | awk -F: '{ print $1 }'

cambiar de usuario:

sudo -i -u <usuario>

• https://kodekloud.com/blog/how-to-list-all-users-in-linux/

sudo systemctl reboot

• https://devconnected.com/how-to-check-ram-on-linux/

ver RAM:

free

top

• https://www.strongdm.com/blog/how-to-change-root-password-linux
• https://www.cyberciti.biz/faq/linux-delete-user-password/

Mostrar información del estado de password:

sudo chage -l <Usuario>

Cambiar password

sudo passwd <usuario>

volver a quitar password:

sudo passwd -d <usuario>

volver quitar password y disabled:

sudo passwd -dl <usuario>

• https://unix.stackexchange.com/questions/558590/disable-password-on-linux-user-with-command