##########################
## Getting Help in Linux
##########################

# MAN Pages
man command     # => Ex: man ls

# The man page is displayed with the less command
# SHORTCUTS:
# h         => getting help
# q         => quit
# enter     => show next line
# space     => show next screen
# /string   => search forward for a string
# ?string   => search backwards for a string
# n / N     => next/previous appearance

# checking if a command is shell built-in or executable file
type rm        # => rm is /usr/bin/rm
type cd        # => cd is a shell builtin

# getting help for shell built-in commands
help command    # => Ex: help cd
command --help  # => Ex: rm --help

# searching for a command, feature or keyword in all man Pages
man -k uname
man -k "copy files"
apropos passwd