Just Me | Cheet Sheet Linux

LINUX (o GNU/LINUX, más correctamente) es un Sistema Operativo como MacOS, DOS o Windows. Es decir, Linux es el software necesario para que tu ordenador te permita utilizar programas como: editores de texto, juegos, navegadores de Internet, etc. Linux puede usarse mediante un interfaz gráfico al igual que Windows o MacOS, pero también puede usarse mediante línea de comandos como DOS

Command Description
man <tool> Opens man pages for the specified tool.
<tool> -h Prints the help page of the tool.
apropos <keyword> Searches through man pages’ descriptions for instances of a given > keyword.
cat Concatenate and print files.
whoami Displays current username.
id Returns users identity.
hostname Sets or prints the name of the current host system.
uname Prints operating system name.
pwd Returns working directory name.
ifconfig The ifconfig utility is used to assign or view an address to a network > interface and/or configure network interface parameters.
ip Ip is a utility to show or manipulate routing, network devices, interfaces, and > tunnels.
netstat Shows network status.
ss Another utility to investigate sockets.
ps Shows process status.
who Displays who is logged in.
env Prints environment or sets and executes a command.
lsblk Lists block devices.
lsusb Lists USB devices.
lsof Lists opened files.
lspci Lists PCI devices.
sudo Execute command as a different user.
su The su utility requests appropriate user credentials via PAM and switches to > that user ID (the default user is the superuser). A shell is then executed.
useradd Creates a new user or update default new user information.
userdel Deletes a user account and related files.
usermod Modifies a user account.
addgroup Adds a group to the system.
delgroup Removes a group from the system.
passwd Changes user password.
dpkg Install, remove and configure Debian-based packages.
apt High-level package management command-line utility.
aptitude Alternative to apt.
snap Install, remove and configure snap packages.
gem Standard package manager for Ruby.
pip Standard package manager for Python.
git Revision control system command-line utility.
systemctl Command-line based service and systemd control manager.
ps Prints a snapshot of the current processes.
journalctl Query the systemd journal.
kill Sends a signal to a process.
bg Puts a process into background.
jobs Lists all processes that are running in the background.
fg Puts a process into the foreground.
curl Command-line utility to transfer data from or to a server.
wget An alternative to curl that downloads files from FTP or HTTP(s) server.
python3 -m http.server Starts a Python3 web server on TCP port 8000.
ls Lists directory contents.
cd Changes the directory.
clear Clears the terminal.
touch Creates an empty file.
mkdir Creates a directory.
tree Lists the contents of a directory recursively.
mv Move or rename files or directories.
cp Copy files or directories.
nano Terminal based text editor.
which Returns the path to a file or link.
find Searches for files in a directory hierarchy.
updatedb Updates the locale database for existing contents on the system.
locate Uses the locale database to find contents on the system.
more Pager that is used to read STDOUT or files.
less An alternative to more with more features.
head Prints the first ten lines of STDOUT or a file.
tail Prints the last ten lines of STDOUT or a file.
sort Sorts the contents of STDOUT or a file.
grep Searches for specific results that contain given patterns.
cut Removes sections from each line of files.
tr Replaces certain characters.
column Command-line based utility that formats its input into multiple columns.
awk Pattern scanning and processing language.
sed A stream editor for filtering and transforming text.
wc Prints newline, word, and byte counts for a given input.
chmod Changes permission of a file or directory.
chown Changes the owner and group of a file or directory.

Command	Description
`man <tool>`	Opens man pages for the specified tool.
`<tool> -h`	Prints the help page of the tool.
`apropos <keyword>`	Searches through man pages’ descriptions for instances of a given > keyword.
`cat`	Concatenate and print files.
`whoami`	Displays current username.
`id`	Returns users identity.
`hostname`	Sets or prints the name of the current host system.
`uname`	Prints operating system name.
`pwd`	Returns working directory name.
`ifconfig`	The `ifconfig` utility is used to assign or view an address to a network > interface and/or configure network interface parameters.
`ip`	Ip is a utility to show or manipulate routing, network devices, interfaces, and > tunnels.
`netstat`	Shows network status.
`ss`	Another utility to investigate sockets.
`ps`	Shows process status.
`who`	Displays who is logged in.
`env`	Prints environment or sets and executes a command.
`lsblk`	Lists block devices.
`lsusb`	Lists USB devices.
`lsof`	Lists opened files.
`lspci`	Lists PCI devices.
`sudo`	Execute command as a different user.
`su`	The `su` utility requests appropriate user credentials via PAM and switches to > that user ID (the default user is the superuser). A shell is then executed.
`useradd`	Creates a new user or update default new user information.
`userdel`	Deletes a user account and related files.
`usermod`	Modifies a user account.
`addgroup`	Adds a group to the system.
`delgroup`	Removes a group from the system.
`passwd`	Changes user password.
`dpkg`	Install, remove and configure Debian-based packages.
`apt`	High-level package management command-line utility.
`aptitude`	Alternative to `apt`.
`snap`	Install, remove and configure snap packages.
`gem`	Standard package manager for Ruby.
`pip`	Standard package manager for Python.
`git`	Revision control system command-line utility.
`systemctl`	Command-line based service and systemd control manager.
`ps`	Prints a snapshot of the current processes.
`journalctl`	Query the systemd journal.
`kill`	Sends a signal to a process.
`bg`	Puts a process into background.
`jobs`	Lists all processes that are running in the background.
`fg`	Puts a process into the foreground.
`curl`	Command-line utility to transfer data from or to a server.
`wget`	An alternative to `curl` that downloads files from FTP or HTTP(s) server.
`python3 -m http.server`	Starts a Python3 web server on TCP port 8000.
`ls`	Lists directory contents.
`cd`	Changes the directory.
`clear`	Clears the terminal.
`touch`	Creates an empty file.
`mkdir`	Creates a directory.
`tree`	Lists the contents of a directory recursively.
`mv`	Move or rename files or directories.
`cp`	Copy files or directories.
`nano`	Terminal based text editor.
`which`	Returns the path to a file or link.
`find`	Searches for files in a directory hierarchy.
`updatedb`	Updates the locale database for existing contents on the system.
`locate`	Uses the locale database to find contents on the system.
`more`	Pager that is used to read STDOUT or files.
`less`	An alternative to `more` with more features.
`head`	Prints the first ten lines of STDOUT or a file.
`tail`	Prints the last ten lines of STDOUT or a file.
`sort`	Sorts the contents of STDOUT or a file.
`grep`	Searches for specific results that contain given patterns.
`cut`	Removes sections from each line of files.
`tr`	Replaces certain characters.
`column`	Command-line based utility that formats its input into multiple columns.
`awk`	Pattern scanning and processing language.
`sed`	A stream editor for filtering and transforming text.
`wc`	Prints newline, word, and byte counts for a given input.
`chmod`	Changes permission of a file or directory.
`chown`	Changes the owner and group of a file or directory.

Recursos

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By Academy Hack The Box