Bash tutorial

echo $0 -> Current terminal program
pwd -> Print work directory
mkdir, rmdir -> Create/Remove dir
touch -> Create a new file
cp, mv -> Copy / Move
cat -> ConcAtenaTe "link (things) together in a chain or series." 把...连接起来

vi have two modes: insert & command
i -> --insert--

Get out: <ESCape> -> :wq (Safe & Quit)

.bash_profile is executed for login shells (have authentication tokens)

if [-f ~/.bashrc]; then
    source ~/.bashrc
fi

This is making sure we only are sourcing the bashrc from the bash_profile.

export CLICOLOR=1
# CLICOLOR enables coloring of your terminal
export LSCOLORS=GxFxCxDxBxegedabagaced
# LSCOLORS specifies how to color specific items

.bashrc is executed for interactive non login shells (general configuration)

clear -> fresh start!

Ctrl + C -> Exit an operation or program.

Write a script!

#!/bin/bash
clear
echo "Good morning, world."