linux学习
chgrp 语法 chgrp xu install.log
chown 语法 chown xu install.log
chmod 语法 chmod 777 install.log
R:4 w:2 x:1
owner group others
7 7 7
cd/ tmp 切换工作目录到/tmp
mkdir testing
chmod 744 testing
touch testing/testing
chmod 600 testing/testing
ls -ald testing testing/testing
mkdir -p test/test1/test2
rmdir -p test/test1/test2