19. Boot

19.1. Modes

  • LiveCD

  • RamFS

19.2. GRUB

  • Kernel

  • Initramfs

  • Splashscreen

  • Multiple OSes

  • Hard disk naming convention

19.3. Files

  • /boot/vmlinuz

  • /boot/initrd.img

  • /boot/grub/grub.cfg

19.4. Directories

  • /boot/efi/

  • /boot/grub/

19.5. Commands

  • uptime - print time since last reboot

  • vmstat - Report virtual memory statistics

  • shutdown - Halt, power-off or reboot the machine

  • runlevel - Print previous and current SysV runlevel

  • readlink - print resolved symbolic links or canonical file names

  • reboot - Halt, power-off or reboot the machine

  • poweroff - Halt, power-off or reboot the machine

  • lsb_release - print distribution-specific information

  • free - Display amount of free and used memory in the system

  • halt - Halt, power-off or reboot the machine

  • hostname - show or set the system's host name

  • hostnamectl - Control the system hostname

  • suspend -