在linux系统中，多台服务器，每个都需要创建用户和用户组，从而写个脚本来自动创建注意：1、必须用root用户来执行2、必须用户名和用户id在系统中未被使用，如果被使用，请修改脚本中相关设置3、例子中的用户名分别为weblogic和log，用户组为bea4、log用户专门用来存放日志，weblogic为运行程序用户，同属组bea5、例子中的weblogic的id为500，log的id为501，组bea的id为500

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#!/bin/bash
#Program:
# This program is used to create user
#History:
#20120706 kel First release
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/sbin:/usr/local/bin
export PATH




#must use root to start the sh
if [ -z "`id |grep "root" `" ] ; then
echo "must use root to start the sh,please contact the administrator"
exit 0;
else
#check the username and the group name was exist
if [ ! -z "`cat /etc/passwd |grep "^weblogic" `" ] || [ ! -z "`cat /etc/group |grep "^bea"`" ] || [ ! -z "`cat /etc/passwd |grep "^log"`" ] || [ ! -z "`cat /etc/passwd |cut -d ":" -f3|grep "50[01]"`" ] || [ ! -z "`cat /etc/group |cut -d ":" -f3 |grep "500"`" ] ; then
echo "username or groupname or userid or groupid  was exist,please checkin"
exit 0;
fi
fi
#add the user and the group
groupadd -g 500 bea
useradd -u 500 -g 500 -d /home/weblogic weblogic
useradd -u 501 -g 500 -d /home/log log


#change the password and the password was same as the username
echo "PLEASE INPUT THE weblogic AND log  PASSWORD"
passwd weblogic


passwd log


#checkin the password was change"
if [ -z `cat /etc/shadow |grep "^weblogic" |grep "\!"` ];then
echo "weblogic password was change successful"
else
echo "weblogic password was not change"
fi


if [ -z `cat /etc/shadow |grep "^log" |grep "\!"` ];then
echo "log  password was change successful"
else
echo "log  password was not change"
fi


chmod 770 /home/log
echo "ADD SUCCESS. add user log and weblogic,uid was 500 and 501 ,add group bea and the gid is 500"


#delete the group and the users
#if [ ! -z $1 ];then
# echo "delete the group and the users"
# userdel -rf log
# userdel -rf weblogic
# groupdel bea
# else
# echo "not delete the group and the users "
#fi