2. Shell Programming Exercise II

Design a shell program, add a new group to Class1, and then add 30 users belonging to this group, the user name in the form of Stdxx, where xx from 01 to 30

!#/bin/bashgroupadd class1 for i in {1..30}do   if [  $I  -le 9 ];then  UN=stu0${I}  else    UN=stu${I}   fi  useradd  $UN   mkdir /home/$UN   chown -R  $UN  / home/$UN   chgrp -r class2 /home/$UN  done#!/bin/sh i=1  groupadd  class1  while [  $i  -le 30 ]  do  if [ $ i -le 9 ] ;then      username=stu0${i}  else       username=stu${i}  fi     useradd $ username     mkdir /home/$USERNAME      chown -r   $USERNAME  /home/$USERNAME      chgrp -r class1 /home/$ username  i=$ (($i + 1))    done 

This article is from the "Itgeshen" blog, make sure to keep this source http://itgeshen.blog.51cto.com/11646497/1912336

2. Shell Programming Exercise II