cmds/

Command pxeboot implements PXE-based booting.

Basename return name with leading path information removed.

cat concatenates files and prints them to stdout.

chmod changes mode bits (e.g.

cmp compares two files and prints a message if their contents differ.

comm compares two files.

cp copies files.

cpio operates on cpio files using a cpio package It only implements basic cpio options.

date prints the date.

dd converts and copies a file.

df reports details of mounted filesystems.

dhclient sets up network config using DHCP.

dirname prints out the directory name of one or more args.

dmesg reads the system log.

echo writes its arguments separated by blanks and terminated by a newline on the standard output.

Elvish is a cross-platform shell, supporting Linux, BSDs and Windows.

Package build contains build information.

Package edit implements a command line editor.

Package eddefs contains types used in the Editor.

Package highlight implements syntax highlighting for Elvish code.

Package location implements the location mode for the editor.

Package prompt implements the prompt subsystem of the editor.

Package tty provides terminal functionality for the Elvish editor.

Package ui contains types that may be used by different editor frontends.

Package eval handles evaluation of parsed Elvish code and provides runtime facilities.

Package bundled keeps bundled modules.

Package vals contains basic facilities for manipulating values used in the Elvish runtime.

Package vars contains basic types for manipulating Elvish variables.

Package getopt implements a command-line argument parser.

Package glob implements globbing for elvish.

Package parse implements the elvish parser.

Package parseutil contains utilities built on top of the parse package.

Package program provides the entry point to Elvish.

Package shell is the entry point for the terminal interface of Elvish.

Package runtime assembles the Elvish runtime.

Package storedefs contains definitions used by the store package.

Package sys provide convenient wrappers around syscalls.

Package tt supports table-driven tests with little boilerplate.

Package util contains utility functions.

false returns 1.

Find finds files.

free reports usage information for physical memory and swap space.

fusermount is a very limited replacement for the C fusermount.

gpgv validates a signature against a file.

gpt reads and writes GPT headers.

grep searches file contents using regular expressions.

gzip compresses files using gzip compression.

hexdump prints file content in hexadecimal.

hostname prints or changes the system's hostname.

hwclock reads or changes the hardware clock (RTC) in UTC format.

id displays the user id, group id, and groups of the calling process.

init is u-root's standard userspace init process.

insmod inserts a module into the running Linux kernel.

installcommand installs a command from Go source files.

io reads and writes to physical memory and ports.

ip manipulates network addresses, interfaces, routing, and other config.

kexec executes a new kernel over the running kernel (u-root).

Kill kills processes.

lddfiles prints the arguments and all .so dependencies of those arguments Description: lddfiles prints the arguments on the command line and all .so's on which they depend.

Ln makes links to files.

lockmsrs locks important intel MSRs.

losetup sets up and controls loop devices.

ls prints the contents of a directory.

lsdrivers lists driver usage on Linux systems Synopsis: lsdrivers [-u] Description: List driver usage.

lsmod list currently loaded Linux kernel modules.

man - print manual entry for command.

Code generated by man/gen/gen.go.

md5sum prints an md5 hash generated from file contents.

mkdir makes a new directory.

mkfifo creates a named pipe.

Unmount a filesystem at the specified path.

Mktemp makes a temporary file (or directory) Synopsis: mktemp [OPTION]...

More pages through files without any terminal trickery.

mount mounts a filesystem at the specified path.

msr -- read and write MSRs with regular command or Forth Synopsis: msr [OPTIONS] r glob MSR msr [OPTIONS] w glob MSR value msr [OPTIONS] forth-word [forth-word ...] Description: This program reads and writes sets of MSRs, while allowing them to by changed on a core by core or collective basis.

mv renames files and directories.

netcat creates arbitrary TCP and UDP connections and listens and sends arbitrary data.

ntpdate uses NTP to adjust the system clock.

pci: show pci bus vendor ids and other info Description: List the PCI bus, with names if possible.

Send icmp packets to a server to test network connectivity.

Print environment variables.

Print process information.

Print name of current directory.

readlink display value of symbolic link file.

Delete files.

Remove a module from the Linux kernel Synopsis: rmmod name Description: rmmod is a clone of rmmod(8) Author: Roland Kammerer <dev.rck@gmail.com>

rsdp allows to determine the ACPI RSDP structure address which could be passed to the boot command later on It must be executed at the system init as it relies on scanning the kernel messages which could be quickly filled up in some cases Synopsis: rsdp [-f file] Description: Look for rsdp value in a file, default /dev/kmsg Example: rsdp rsdp -f /path/to/file

Scp copies files between hosts on a network.

Print a sequence of numbers.

shutdown halts, suspends, or reboots.

Delay for the specified amount of time.

Sort lines.

strace is a simple multi-process syscall & signal tracer.

Strings finds printable strings.

The command works like this: stty [verb] [options] Verbs are: dump -- dump the json of the struct to stdout load -- read a json file from stdin and use it to set raw -- convenience command to set raw cooked -- convenience command to set cooked In common stty usage, options may be specified without a verb.

Create and extract tar archives.

Tee transcribes the standard input to the standard output and makes copies in the files.

Returns 0.

Truncate - shrink or extend the size of a file to the specified size Synopsis: truncate [OPTIONS] [FILE]...

ts prepends each line of stdin with a timestamp.

Unmount a filesystem at the specified path.

Print build information about the kernel and machine.

Uniq removes repeated lines.

Unmount unmounts new from old, or everything mounted on old if new is omitted.

Disassociate parts of the process execution context.

Get the time the machine has been up Synopsis: uptime

Wc counts lines, words, runes, syntactically–invalid UTF codes.

Wget reads one file from a url and writes to stdout.

Which locates a command.

acpicat cats ACPI tables from the kernel.

grep a stream of ACPI tables by regexp Synopsis: acpigrep [-v] [-d] regexp Description: Read tables from stdin and write tables with ACPI signatures matching a pattern (or not matching, with -v, as in grep) to stdout.

Print ansi escape sequences.

our first builtin: cd The u-root shell is intended to be very simple, since builtins and extensions are written in Go.

Command bootvars reads the current UEFI boot variables.

bzImage is used to modify bzImage files.

cbmem prints out coreboot mem table information in JSON by default, and also implements the basic cbmem -list and -console commands.

console implements a basic console.

Prints crc checksum of a file.

The disk_unlock command is used to unlock a disk drive as follows: 1.

These should all implement io.ReadAt, with the address as the Offset; same for WriteAt.

address.go - contains methods for FileBuffer for line address resolution commands.go - defines editor commands This `ed` is intended to be a feature-complete mimick of [GNU Ed](https://www.gnu.org/software/ed//).

fdtdump prints a readable version of Flattened Device Tree or dtb.

The `field` command reads newline-separated lines of data from either the standard input or the specified files.

fixrsdp copies the existing RSDP into the EBDA region in low mem.

Forth is a forth interpreter.

Freq reads the given files (default standard input) and prints histograms of the character frequencies.

getty Open a TTY and invoke a shell There are no special options and no login support Also getty exits after starting the shell so if one exits the shell, there is no more shell! Synopsis: getty <port> <baud> [term]

hdparm performs control operations on disks.

Synopsis: ipmidump [-option] Description: Options: -chassis : Print chassis power status.

madeye merges multiple architecture u-root initramfs to form a single universal initramfs.

modprobe - Add and remove modules from the Linux Kernel Synopsis: modprobe [-n] modulename [parameters...] modprobe [-n] -a modulename...

Synopsis: page [file] Description: page prints a page at a time to stdout from either stdin or a named file.

partprobe prompts the OS to re-read partition tables.

pox builds a portable executable as a squashfs image.

pxeserver is a test & lab PXE server that supports TFTP, HTTP, and DHCPv4.

Dump the headers of a PE file.

Run executes its arguments as a Go program.

our first builtin: cd The u-root shell is intended to be very simple, since builtins and extensions are written in Go.

smn: read or write registers in the System Management Network on AMD cpus Synopsis: snm [0 or more addresses] N.B. having no addresses is an easy way to see if you can access PCI at all.

Serve files on the network.

tac concatenates files and prints to stdout in reverse order, file by file Synopsis: tac <file...> Description: Options:

This program validates a file by verifying a checksum and a signature file.

zimage dumps the header of a zImage.