List information about directories and files, the current directory by default.

# Displays everything in the target directory
ls path/to/the/target/directory

# Displays everything including hidden files
ls -a

# Displays all files, along with the size (with unit suffixes) and timestamp
ls -lh 

# Display files, sorted by size
ls -S

# Display directories only
ls -d */

# Display directories only, include hidden
ls -d .*/ */