Get help on Linux readarray Command.

   Linux readarray command is use to read lines from a file into an array variable on Linux system.  The Linux readarray command is one of bash shell built in command.  The command example below show how to get readarray command manual or help on Linux readarray command using shell command, this help show information on how to use the Linux readarray command, the readarray command options and the arguments that can be use with Linux readarray command.