From 759bbf7604b740cab79dade7e82da7ba1658af85 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=8E=8B=E7=86=99?= <wangxi@wangxi.local>
Date: Sun, 28 May 2017 15:49:46 +0800
Subject: [PATCH 1/3] change first line

---
 assignments/shell/AddUsers/addUsers.sh | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/assignments/shell/AddUsers/addUsers.sh b/assignments/shell/AddUsers/addUsers.sh
index 731563e..b43a074 100644
--- a/assignments/shell/AddUsers/addUsers.sh
+++ b/assignments/shell/AddUsers/addUsers.sh
@@ -1,9 +1,8 @@
-#
-#
+#!/bin/sh
+#change first line
 # useradd
 # chpasswd
 # chown
 # chmod
 # edquota
 #
-

From 845d5ab6fe334e40998af0f9b7d790570f4b3da5 Mon Sep 17 00:00:00 2001
From: cynthiax <365683780@qq.com>
Date: Sun, 28 May 2017 15:59:21 +0800
Subject: [PATCH 2/3] try

---
 assignments/shell/AddUsers/addUsers.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/assignments/shell/AddUsers/addUsers.sh b/assignments/shell/AddUsers/addUsers.sh
index b43a074..450f8c7 100644
--- a/assignments/shell/AddUsers/addUsers.sh
+++ b/assignments/shell/AddUsers/addUsers.sh
@@ -5,4 +5,4 @@
 # chown
 # chmod
 # edquota
-#
+#hhh

From e6d10050de93746fba5befe163dfedf4e16f41fe Mon Sep 17 00:00:00 2001
From: cynthiax <365683780@qq.com>
Date: Sun, 28 May 2017 16:17:35 +0800
Subject: [PATCH 3/3] completed homework

---
 assignments/shell/AddUsers/addUsers.sh | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/assignments/shell/AddUsers/addUsers.sh b/assignments/shell/AddUsers/addUsers.sh
index 450f8c7..abed4e7 100644
--- a/assignments/shell/AddUsers/addUsers.sh
+++ b/assignments/shell/AddUsers/addUsers.sh
@@ -5,4 +5,24 @@
 # chown
 # chmod
 # edquota
-#hhh
+#
+for userlist in $(more ./users.txt)
+do
+if [ $(id -u) -eq 0 ]; then
+        username="$userlist"
+        password="$2"
+        echo "Creating $username"
+        egrep "^$username" /etc/passwd >/dev/null
+        if [ $? -eq 0 ]; then
+                echo "$username exists!"
+                exit 1
+        else
+                pass=$(perl -e 'print crypt($ARGV[0], "password")' $password)
+                useradd -G adm,dialout,cdrom,floppy,sudo,audio,dip,video,plugdev,netdev -m -p $pass $username
+                [ $? -eq 0 ] && echo "Successed: User $username has been added." || echo "Failed."
+        fi
+else
+        echo "Failed: You are not root user."
+        exit 2
+fi
+done