Just some notes on Bash...

Bash Commands

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#           ********  Welcome to my notes on Bash Commands and Scripting  ********             #
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# Here you will find a list of commonly used commands and a brief explanation of what they do. #
# The purpose of these notes are to remind the use of the commands, rather than to teach. If   #
# you need more information type "man " before each command in the terminal. There are many    #
# sources online you can find also.                                                            #
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## COMMANDS

cd		- open file directory (folders)
pwd		- print working directory (show current folder path)
ls		- list all files and folders
mkdir		- make a new directory (folder)
chmod		- change file permissions (use 'chmod +x ' to make files executable)
		* example: chmod +x /path/to/script.sh
		* to run:  ./script.sh

lsblk 		- list all devices and hard drives
mount		- mount a device (first you may need to create a directory)
		* example: mkdir /media/usb
		*          mount /dev/sda1 /media/usb
umount		- (not "unmount") opposite of mount

cp		- copy files or folders
cp -a /s/. /d/  - copies all files and subfolders from dir /s to dir /d
rsync -av	- same with cp, but more advanced (ideal for backups)
mv		- move files (similar to cut & paste)
mv file1 file2  - rename "file1" to "file2"
rm		- delete files (see man for more options)
rm -r		- delete all files and directories within folder

tar		- file compression tool for TAR files (.tgz, .tar.gz)
tar -xvzf	- extract compressed files
		- #Examples: https://www.tecmint.com/18-tar-command-examples-in-linux/ 
dpkg --install  - Install .deb file

wget "URL"	- download file from URL (must link directly to file)


## SCRIPTING

# Always start a script with #!/bin/bash in the very first line.
# Note that hash (#) is for comments. Any line starting with # will be ignored.

if   [...]
then
      ...
fi

while [...]       - while loop structure
do
      ...
      ...
done

function () {
      ...
}