# ls

> List directory contents.

- List files one per line:

`ls -1`

- List all files, including hidden files:

`ls -a`

- Long format list (permissions, ownership, size and modification date) of all files:

`ls -la`

- Long format list with size displayed using human readable units (KB, MB, GB):

`ls -lh`

- Long format list sorted by size (descending):

`ls -lS`

- Long format list of all files, sorted by modification date (oldest first):

`ls -ltr`