ls

List directory contents. More information: https://www.gnu.org/software/coreutils/manual/html_node/ls-invocation.html.

• List files one per line:

ls -1

• List [a]ll files, including hidden files:

ls -a

• List files with a trailing symbol to indicate file type (directory/, symbolic_link@, executable*, …):

ls -F

• List [a]ll files in [l]ong format (permissions, ownership, size, and modification date):

ls -la

• List files in [l]ong format with size displayed using [h]uman-readable units (KiB, MiB, GiB):

ls -lh

• List files in [l]ong format, sorted by [S]ize (descending) [R]ecursively:

ls -lSR

• List files in [l]ong format, sorted by [t]ime the file was modified and in [r]everse order (oldest first):

ls -ltr

• Only list [d]irectories:

ls -d */