批次加使用者指令碼

建立100個系統使用者，登入使用者名稱取值範圍為（exam0～exam99）使用者登入密碼與其使用者名稱相同，使用者的預設shell為要求為bash，使用者的home目錄要求在/home 下的與其使用者名稱相同的資料夾下；這100個使用者的uid應該從1001開始依次向後排列，同時這些使用者都應該屬於gid為1001的study組。
這個指令碼怎麼寫？

你看過鳥哥的私房菜沒有?第三版的？？哪裡面有介紹，而且還有一個事例，也是講的如何批次的新增使用者！！你可以看看！好像是在shell指令碼這一章！指令碼這個東西我也在學習中，不是太懂！所以.......你看看鳥哥的介紹吧！

===

#!/bin/bash
read -p "您想要建立多少個使用者：" count
i=1
name=user
while [ $i -le $count ]
do
if [ $i -le 9 ];then
i=0$i
fi
useradd $name$i
i='expr $i + 1'
done
-------------------------------------------------
自己修改下

=====

我就拿十個來搞~~

[root@alibaba ~]# cat useradd
#!/bin/bash
groupadd study -g 1001
for i in $(seq 0 9)
do
  ii=$[ $i+1000 ]
  useradd exam$i -s /bin/bash -u $ii -g study
  echo exam$i | passwd --stdin exam$i
done

++++++++++++++++++++++++++++++++++++++++++++++++++

[root@alibaba ~]# ./useradd
Changing password for user exam0.
passwd: all authentication tokens updated successfully.
Changing password for user exam1.
passwd: all authentication tokens updated successfully.
Changing password for user exam2.
passwd: all authentication tokens updated successfully.
Changing password for user exam3.
passwd: all authentication tokens updated successfully.
Changing password for user exam4.
passwd: all authentication tokens updated successfully.
Changing password for user exam5.
passwd: all authentication tokens updated successfully.
Changing password for user exam6.
passwd: all authentication tokens updated successfully.
Changing password for user exam7.
passwd: all authentication tokens updated successfully.
Changing password for user exam8.
passwd: all authentication tokens updated successfully.
Changing password for user exam9.
passwd: all authentication tokens updated successfully.
[root@alibaba ~]# tail -10 /etc/passwd
exam0:x:1000:1001::/home/exam0:/bin/bash
exam1:x:1001:1001::/home/exam1:/bin/bash
exam2:x:1002:1001::/home/exam2:/bin/bash
exam3:x:1003:1001::/home/exam3:/bin/bash
exam4:x:1004:1001::/home/exam4:/bin/bash
exam5:x:1005:1001::/home/exam5:/bin/bash
exam6:x:1006:1001::/home/exam6:/bin/bash
exam7:x:1007:1001::/home/exam7:/bin/bash
exam8:x:1008:1001::/home/exam8:/bin/bash
exam9:x:1009:1001::/home/exam9:/bin/bash

========

從板凳的理念出發~~
[root@alibaba ~]# cat useradd
#!/bin/bash
groupadd study123 -g 3001
read -p "建立使用者數:" count
for i in $(seq 0 "$count")
do
  ii=$[ $i+3000 ]
  useradd exama$i -s /bin/bash -u $ii -g study123
  echo exama$i | passwd --stdin exama$i
done

========

建立10個系統賬戶，並加入到yewu組的指令碼
#!/bin/bash
i=1
groupadd yewu
while  [ $i -le 10  ]
do
if  [ $i -le 10 ] ;then
useradd stu0$i -g yewu
else
useradd stu$i  -g yewu
fi
let i++
done

===========

互動式建立賬戶的腳步
#!/bin/bash
echo -n  "please input a username:"
read AA
useradd $AA -s /sbin/nologin
echo "$AA" | passwd --stdin $AA &> /dev/null
echo -n "Do you want to setup another user?(yes/no)"
read BB
while [ $BB = yes  ]
do
echo -n  "please input a username:"
read EE
useradd $EE -s /sbin/nologin
echo "$EE" | passwd --stdin $EE &> /dev/null
echo -n "Do you want to setup another user?(yes/no)"
read BB
done

====

迴圈語句比如for

useradd home目錄自動解決了

密碼那可以用 echo username:passwd | chpasswd 相關位置變數代替

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批次加使用者指令碼

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