Opening Files From The Terminal With Text Editor CLIs
Most text editors can open files from a computer's command line shell. Here are 8 different text editor commands for opening a file:
IDLE (Python's Built-in Editor)
idle file.py

image source: IDLE documentation
Sublime
subl template.rst

VS Code
code file.py
Atom
atom file.py
Emacs
emacs -nw file.txt
source: Stack Overflow user Anthon
Notepad++
start notepad++ file.py
source: W3 Schools
TextEdit
open -a TextEdit file.txt
source: Stack Overflow user robmathers
Vim
:e file.txt
source: confirm blog
The ability to quickly pop open and view a file is essential. Ubuntu has the cat command to print a file's contents to the terminal screen also if you don't need to edit it. Tools like sed and awk are useful for command line file editing if you prefer to keep it in the terminal.
Want to read more about text editors? Check out my text editor file size comparison here.