This was written with a macOS system in mind.

💻 Useful Tricks in an Editor (Visual Studio Code)

Action	Shortcut / Command	Notes
Block indent	Tab
Block unindent	Shift + Tab
Single-space indent	Tab	Requires extension: indent-one-space
Move cursor quickly	Cmd + Arrow	Jump to start/end of line
Select text	Shift + Arrow
Multi-select next occurrence	Cmd + D	Select and edit repeated text
Comment / uncomment	Cmd + /
Search in entire project	Shift + Cmd + F
Go to definition	Cmd + Click	Click on function name

🖥 Useful Terminal Tricks (Bash)

Goal	Command	Notes
Export filenames containing an expression	ls | grep expression > output.txt	Save results to file
Delete all files with a specific extension	find . -name "*.bak" -type f -delete	Recursive
Interrupt running process	Ctrl + C
List open processes in a directory	lsof +D /path	Shows PID numbers
Kill a process	kill <pid>	Replace <pid> with process ID
Clear line before cursor	Ctrl + U	Deletes current command
Clear terminal screen	Ctrl + L
Search command history	Ctrl + R
Autocomplete command	Tab	Extremely useful

When working on a remote server or cluster, graphical file browsing disappears.
Being comfortable with the terminal becomes essential.

📁 Using the Terminal for Files

Goal	Command	Notes
Show folder disk usage	du -sh *	-s summary, -h human-readable
Show filesystem disk usage	df -h
Create empty file	touch myfile
Edit file	vim myfile	Or code myfile for VS Code
→ Enter insert mode (vim)	I
→ Search in vim	/word	Press n for next match
→ Save and quit (vim)	:wq
→ Quit without saving	:q!
Display file content	cat myfile
Scroll through file	less myfile	Press q to quit
Show beginning of file	head myfile
Show end of file	tail myfile	Useful for logs

This is particularly useful when monitoring a log file that updates during execution.

🍏 Useful macOS Visual Tricks

Action	Shortcut	Notes
Preview file without opening	Spacebar	Quick Look
Split screen	Hold green window button → drag