【简答题】执行命令 ls – l 时,某行显示如下: -rw-r--r-- 1 chris chris 207 jul 20 11:58 mydata (1)执行命令useradd Tom后,用户Tom对该文件具有什么权限? (2)如何使任何用户都可以读写执行该文件? (3)如何把该文件属主改为用户root ?
【单选题】请阅读短文,完成第题。 It is frequently assumed that the mechanization of work has a revolutionary effect on the livesof the people who operate the new machines and on the society into which the machines have be...
A.
The mechanization of work has a revolutionary eftct.
B.
The social mechanization would 'aftct women's lives.
C.
The social status of women has changed.
D.
Observers have different ideas about the effect of social mechanizatiou.