Linux Fundimentals

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Overview

Linux is a free open source OS often used because of its flexibility and security features, because it is open source its code can be modified and distributed to team members easily

Use Cases

Super user do

sudo

List Files

ls (-a shows-all-files) (-l shows-detailed-info)

Change Directory

cd

Print Working Directory

pwd

Create File

touch (filename.extention)

Edit

vi (filename)

i (insert)

(esc-key-to-exit)

:wq (save-quit)

:q! (quits-without-saving)

Create Folder

mkdir (-p can-create-subfolders-at-same-time)(foldername)

Install

dnf/yum (install)(-y automatically-agrees-to-install) (filename) (update updates-list-of-out-of-date-files) (upgrade upgrades-out-of-date-files)

System Control

systemctl (enable) (start) (status) (package-name)

Copy

cp (filename) (destination-filename)

Move/Rename

mv (filename) (new-filename-with-destination)

Remove

rm (filename) (-d removes-folder-won't-work-if-not-empty) (-r go-through-all-files-and-folders-under)(-f force)

Add User

adduser (username) (-c adds-name)

Add Password

passwd (username) (password)

Add Group

groupadd (groupname)

Add User to Group

usermod (username) (-aG adds-group-to-user) (groupname)

Change Mode

chmod (between-000-and-777)

Change Owner

chown (user) (filename)

Change Group

chgrp (groupname) (filename)

Check IP

ipconfig/ip addr

Ping

ping (ip-address)

Get Files

wget (url)

Get and Send Files

curl (url)