useradd shell script

#!/bin/bash
useradd $1
echo $2 | passwd --stdin $1

[root@linux249 ~]# echo $PATH
/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:
/usr/bin:/usr/X11R6/bin:/root/bin
[root@linux249 ~]# mkdir bin
[root@linux249 ~]# mv userpass bin
[root@linux249 ~]# which userpass
/root/bin/userpass

[root@linux249 ~]# userpass snowman love1004
Changing password for user snowman.
passwd: all authentication tokens updated successfully.
[root@linux249 ~]# tail -n 1 /etc/{passwd,shadow}
==> /etc/passwd <==
snowman:x:501:501::/home/snowman:/bin/bash

==> /etc/shadow <==
snowman:$1$5LEDZAhK$7lWAgXpB40y1.Pd/yTVlq.:14607:0:99999:7:::

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* id.txt에서 목록 끌어와서 자동 생성 -> skman, kiaman, hwman, dsman, lgman

#!/bin/bash
for user in $(fmt id.txt)
do
  useradd $user
  echo password --stdin $user
done

[root@linux249 ~]# user.sh
password --stdin skman
password --stdin kiaman
password --stdin hwman
password --stdin dsman
password --stdin lgman

[root@linux249 ~]# tail -n 5 /etc/{passwd,shadow}
==> /etc/passwd <==
skman:x:502:502::/home/skman:/bin/bash
kiaman:x:503:503::/home/kiaman:/bin/bash
hwman:x:504:504::/home/hwman:/bin/bash
dsman:x:505:505::/home/dsman:/bin/bash
lgman:x:506:506::/home/lgman:/bin/bash

==> /etc/shadow <==
skman:!!:14607:0:99999:7:::
kiaman:!!:14607:0:99999:7:::
hwman:!!:14607:0:99999:7:::
dsman:!!:14607:0:99999:7:::
lgman:!!:14607:0:99999:7:::

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