This is where you will find information on how to work with bash strings

String Types

Using single or double quotes matter!

NAME="Stefan"
echo "Hi $NAME"  #=> Hi Stefan
echo 'Hi $NAME'  #=> Hi $NAME

Single quotes prevent you from using Bash Inline Functions ( $() syntax )

Get Length Of String

my_string="hello"
echo "${#my_string}"  # Output: 5

my_string="abcdefg"
echo "${my_string:2:3}"  # Output: cde

file_path="/home/user/document.txt"
echo "${file_path#*/}"   # Output: home/user/document.txt

file_path="/home/user/document.txt"
echo "${file_path##*/}"  # Output: document.txt

filename="document.txt"
echo "${filename%.txt}"  # Output: document

filename="archive.tar.gz"
echo "${filename%%.*}"   # Output: archive

text="hello world, hello again"
echo "${text/hello/hi}"  # Output: hi world, hello again

word="hello"
echo "${word^^}"  # Output: HELLO

word="WORLD"
echo "${word,,}"  # Output: world