ls
ls list files and directories stored in filesystem.
Using ls command with -h parameter prints help message as follows:
usage: ls [options] [files]
-1: one entry per line
-a: do not ignore entries starting with .
-d: list directories themselves, not their contents
-f: do not sort
-h: prints help
-l: long listing format
-r: sort in reverse order
-S: sort by file size, largest first
-t: sort by time, newest first
By default, . (current directory) is used as [files]. Executing sole:
ls
Will print all normal files and directories in current directory.
Options (excluding -h) may be used together, so the following command:
ls -laf bin/
Will print all files and directories in bin/ directory including those starting with ., unsorted and with one entry
per line.