Shulou(Shulou.com)06/02 Report--

Editor to share with you the use of linux's mapfile command to read rows from standard input and assign values to the array. I hope you will learn a lot after reading this article. Let's discuss it together.

The mapfile command is used to read lines from standard input or file descriptors and assign values to an array

Syntax format: mapfile [parameters]

Common parameters:

Reference example

First create a file alpha.log for the example, one lowercase letter per line, with a total of 26 lines:

[root@linuxcool ~] # echo {a.. z} | tr "\ n" > alpha.log [root@linuxcool ~] # cat alpha.logabcdefghijklmnopqrstuvwxyz

Read the alpha.log file and store each line in the array myarr (if not specified, in the default MAPFILE array):

[root@linuxcool ~] # mapfile myarr

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.