文章摘要
一、思维导图二、练习#!/bin/bash mkdir ~/dir mkdir ~/dir/dir1 mkdir ~/dir/dir2 cp -r * ~/dir/dir1/ cp -r *.sh ~/dir/dir2/ cd ~/dir/dir2/ tar -cvJf dir2.tar.xz dir2 mv dir2.tar.xz ~/dir/dir1/ cd ~/dir/dir1 tar -xvJf dir2.tar.xz#!/bin/bash head -5 /etc/group…