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  This (the Directory node) gives a menu of major topics.
  Typing "q" exits, "H" lists all Info commands, "d" returns here,
  "h" gives a primer for first-timers,
  "mEmacs<Return>" visits the Emacs manual, etc.

  In Emacs, you can click mouse button 2 on a menu item or cross reference
  to select it.

Basics

Common options

Coreutils

Core GNU (file, text, shell) utilities.

Date input formats

Ed

The GNU line editor

File permissions

Access modes.

Finding files

Operating on files matching certain criteria.

Time

time

Compression

Gzip

General (de)compression of files (lzw).

Editors

nano

Small and friendly text editor.

General Commands

Screen

Full-screen window manager.

GNU organization

Maintaining Findutils

Maintaining GNU findutils

GNU Utilities

dirmngr-client

X.509 CRL and OCSP client.

dirmngr

X.509 CRL and OCSP server.

gpg-agent

The secret key daemon.

gpg2

OpenPGP encryption and signing tool.

gpgsm

S/MIME encryption and signing tool.

Individual utilities

arch

Print machine hardware name.

b2sum

Print or check BLAKE2 digests.

base32

Base32 encode/decode data.

base64

Base64 encode/decode data.

basename

Strip directory and suffix.

basenc

Encoding/decoding of data.

cat

Concatenate and write files.

chcon

Change SELinux CTX of files.

chgrp

Change file groups.

chmod

Change access permissions.

chown

Change file owners and groups.

chroot

Specify the root directory.

cksum

Print POSIX CRC checksum.

cmp

Compare 2 files byte by byte.

comm

Compare sorted files by line.

cp

Copy files.

csplit

Split by context.

cut

Print selected parts of lines.

date

Print/set system date and time.

dd

Copy and convert a file.

df

Report file system usage.

diff3

Compare 3 files line by line.

diff

Compare 2 files line by line.

dir

List directories briefly.

dircolors

Color setup for ls.

dirname

Strip last file name component.

du

Report file usage.

echo

Print a line of text.

env

Modify the environment.

expand

Convert tabs to spaces.

expr

Evaluate expressions.

factor

Print prime factors

false

Do nothing, unsuccessfully.

find

Finding and acting on files.

fmt

Reformat paragraph text.

fold

Wrap long input lines.

groups

Print group names a user is in.

gunzip

Decompression.

gzexe

Compress executables.

head

Output the first part of files.

hostid

Print numeric host identifier.

hostname

Print or set system name.

id

Print user identity.

install

Copy files and set attributes.

join

Join lines on a common field.

kill

Send a signal to processes.

link

Make hard links between files.

ln

Make links between files.

locate

Finding files in a database.

logname

Print current login name.

ls

List directory contents.

md5sum

Print or check MD5 digests.

mkdir

Create directories.

mkfifo

Create FIFOs (named pipes).

mknod

Create special files.

mktemp

Create temporary files.

mv

Rename files.

nice

Modify niceness.

nl

Number lines and write files.

nohup

Immunize to hangups.

nproc

Print the number of processors.

numfmt

Reformat numbers.

od

Dump files in octal, etc.

paste

Merge lines of files.

patch

Apply a patch to a file.

pathchk

Check file name portability.

pr

Paginate or columnate files.

printenv

Print environment variables.

printf

Format and print data.

ptx

Produce permuted indexes.

pwd

Print working directory.

readlink

Print referent of a symlink.

realpath

Print resolved file names.

rm

Remove files.

rmdir

Remove empty directories.

runcon

Run in specified SELinux CTX.

sdiff

Merge 2 files side-by-side.

seq

Print numeric sequences

sha1sum

Print or check SHA-1 digests.

sha2

Print or check SHA-2 digests.

shred

Remove files more securely.

shuf

Shuffling text files.

sleep

Delay for a specified time.

sort

Sort text files.

split

Split into pieces.

stat

Report file(system) status.

stdbuf

Modify stdio buffering.

stty

Print/change terminal settings.

sum

Print traditional checksum.

sync

Sync files to stable storage.

tac

Reverse files.

tail

Output the last part of files.

tee

Redirect to multiple files.

test

File/string tests.

timeout

Run with time limit.

touch

Change file timestamps.

tr

Translate characters.

true

Do nothing, successfully.

truncate

Shrink/extend size of a file.

tsort

Topological sort.

tty

Print terminal name.

uname

Print system information.

unexpand

Convert spaces to tabs.

uniq

Uniquify files.

unlink

Removal via unlink(2).

updatedb

Building the locate database.

uptime

Print uptime and load.

users

Print current user names.

vdir

List directories verbosely.

wc

Line, word, and byte counts.

who

Print who is logged in.

whoami

Print effective user ID.

xargs

Operating on many files.

yes

Print a string indefinitely.

zcat

Decompression to stdout.

zdiff

Compare compressed files.

zforce

Force .gz extension on files.

zgrep

Search compressed files.

zmore

Decompression output by pages.

Kernel

GRUB

The GRand Unified Bootloader

grub-dev

The GRand Unified Bootloader Dev

grub-install

Install GRUB on your drive

grub-mkconfig

Generate GRUB configuration

grub-mkpasswd-pbkdf2

grub-mkrelpath

grub-mkrescue

Make a GRUB rescue image

grub-mount

Mount a file system using GRUB

grub-probe

Probe device information

grub-script-check

Libraries

RLuserman

The GNU readline library User's Manual.

Math

bc

An arbitrary precision calculator language.

Network applications

Wget

Non-interactive network downloader.

Platform Management

FreeIPMI FAQ

FreeIPMI - Frequently Asked Questions

Texinfo documentation system

info stand-alone

Read Info documents without Emacs.

Text creation and manipulation

Diffutils

Comparing and merging files.

grep

Print lines that match patterns.

sed

Stream EDitor.