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16.3 The list of command-line and menu entry commands

These commands are usable in the command-line and in menu entries. If you forget a command, you can run the command help (see help).

• [  Check file types and compare values
• acpi  Load ACPI tables
• authenticate  Check whether user is in user list
• background_color  Set background color for active terminal
• background_image  Load background image for active terminal
• badram  Filter out bad regions of RAM
• blocklist  Print a block list
• boot  Start up your operating system
• cat  Show the contents of a file
• chainloader  Chain-load another boot loader
• clear  Clear the screen
• cmosclean  Clear bit in CMOS
• cmosdump  Dump CMOS contents
• cmostest  Test bit in CMOS
• cmp  Compare two files
• configfile  Load a configuration file
• cpuid  Check for CPU features
• crc  Compute or check CRC32 checksums
• cryptomount  Mount a crypto device
• date  Display or set current date and time
• devicetree  Load a device tree blob
• distrust  Remove a pubkey from trusted keys
• drivemap  Map a drive to another
• echo  Display a line of text
• eval  Evaluate agruments as GRUB commands
• export  Export an environment variable
• false  Do nothing, unsuccessfully
• gettext  Translate a string
• gptsync  Fill an MBR based on GPT entries
• halt  Shut down your computer
• hashsum  Compute or check hash checksum
• help  Show help messages
• initrd  Load a Linux initrd
• initrd16  Load a Linux initrd (16-bit mode)
• insmod  Insert a module
• keystatus  Check key modifier status
• linux  Load a Linux kernel
• linux16  Load a Linux kernel (16-bit mode)
• list_env  List variables in environment block
• list_trusted  List trusted public keys
• load_env  Load variables from environment block
• loadfont  Load font files
• loopback  Make a device from a filesystem image
• ls  List devices or files
• lsfonts  List loaded fonts
• lsmod  Show loaded modules
• md5sum  Compute or check MD5 hash
• module  Load module for multiboot kernel
• multiboot  Load multiboot compliant kernel
• nativedisk  Switch to native disk drivers
• normal  Enter normal mode
• normal_exit  Exit from normal mode
• parttool  Modify partition table entries
• password  Set a clear-text password
• password_pbkdf2  Set a hashed password
• play  Play a tune
• probe  Retrieve device info
• pxe_unload  Unload the PXE environment
• rdmsr  Read values from model-specific registers
• read  Read user input
• reboot  Reboot your computer
• regexp  Test if regular expression matches string
• rmmod  Remove a module
• save_env  Save variables to environment block
• search  Search devices by file, label, or UUID
• sendkey  Emulate keystrokes
• set  Set an environment variable
• sha1sum  Compute or check SHA1 hash
• sha256sum  Compute or check SHA256 hash
• sha512sum  Compute or check SHA512 hash
• sleep  Wait for a specified number of seconds
• source  Read a configuration file in same context
• test  Check file types and compare values
• true  Do nothing, successfully
• trust  Add public key to list of trusted keys
• unset  Unset an environment variable
• uppermem  Set the upper memory size
• verify_detached  Verify detached digital signature
• videoinfo  List available video modes
• wrmsr  Write values to model-specific registers
• xen_hypervisor  Load xen hypervisor binary (only on AArch64)
• xen_module  Load xen modules for xen hypervisor (only on AArch64)

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