sudo: /usr/bin/sudo must be owned by uid 0 and have the setuid bit set问题解决方案
当我们使用sudo su切换权限时提示错误:
sudo: /usr/bin/sudo must be owned by uid 0 and have the setuid bit set该错误出现原因:是因为/usr/bin/sudo的权限被…
chown
修改文件的用户组固然重要,但是修改文件的拥有者可能会更常用。修改用户组使用的是chgrp命令,而要修改拥有者则应该使用chown命令。 $ ls -l -rw-r--r-- 1 scott scott ... libby_arrowrock.jpg -rw-r--r-- 1 scott family ... libby.jpg -rw-r--…
一、题目
1、题目描述 The multiplication puzzle is played with a row of cards, each containing a single positive integer. During the move player takes one card out of the row and scores the number of points equal to the product of the number on the card ta…