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linux 修改用户密码+非交互设置密码
linux 修改用户密码+非交互设置密码
Friday, May 23, 2014
7:25 PM
linux 修改用户密码+非交互设置密码
修改本地用户密码：
1、交互配置本地用户：
以root用_8h"@：
passwd <username>
Changing passWord for user dewang.
New UNIX passWord :
BAD PASSWord : it is too short
Retype new UNIX password:
passwd: all authentication tokens updated successfully.
以非root用户修改自己的密码（注后面不能跟用户名，只有root用户才允许）：
passwd
Changing password for user dewang.
Changing password for dewang
(current) UNIX password:
New UNIX password:
Retype new UNIX password:
passwd: all authentication tokens updated successfully.
2、非交互配置本地用户：
echo <newpasswd> | passwd --stdin <username>
_8h"@ 或
echo <username>:<passwd> | chpasswd
或
将<username>:<passwd>对先写到一文件passwd.tmp中，然后执行
chpasswd < passwd.tmp
3、自动脚本处理：
根据passwd命令修改用户密码，格式为：xxx.sh <username> <passwd>
#!/bin/sh
# /
exec expect -f "$0" ${1+"$@"}
if { $argc != 2 } {
puts "Usage: $argv0 <username> <passwd>"
exit 1
}
set password [lindex $argv 1]
spawn passwd [lindex $argv 0]
sleep 1
expect "assword:"
send "$password/r"
expect "assword:"
send "$password/r"
expect eof
说明：如果要通过shell直接调用expect相关命令，则开头中必须是如下格式，然后后面即可按照expect、TCL格式书写了。
#!/bin/sh
# /
exec expect_8h"@ -f "$0" ${1+"$@"}
根据echo <newpasswd> | passwd --stdin <username> 及 echo <username>:<passwd> | chpasswd来修改用户密码：
#!/bin/sh
if [ $# -ne 2 ] ; then
echo "Usage: `basename $0` <username> <passwd>"
exit 1
fi
#echo "$2" | passwd --stdin "$1"
echo "$1:$2" | chpasswd
if [ $? -eq 0 ] ; then
echo "change password for $1 success"
else
echo "change password for $1 failed"
fi
修改远程主机上用户密码：
1、交互配置远程用户：
echo <newpasswd> | ssh -l root <host> passwd --stdin <username>
如：
echo "newpass" | ssh -l root 10.11.103.151 passwd --stdin dewang
root@10.11.103.151's_8h"@ password:
Changing password for user dewang.
passwd: all authentication tokens updated successfully.
或
echo <username>:<passwd> | ssh -l root <host> chpasswd 2>&1
或
将<username>:<passwd>对先写到一文件passwd.tmp中，然后执行
chpasswd < passwd.tmp ［作者未测试］
或
ssh -l root <host>
.... 交互输入root密码
然后执行以上的所有可用方式均可
2、非交互配置远程用户：
则需要用到expect来进行处理，通过ssh登录到远程机器，然后结合上述配置方式，以完成自动修改用户密码。
#!/usr/bin/expect
#@brief to change user password by ssh remote machine
proc usage {funcname} {
puts "Usage: "
puts " $funcname <host> <username> <newpasswd> -user_8h"@ <userpasswd>"
puts " $funcname <host> <username> <newpasswd> -root <rootpasswd>"
}
# check param
if { $argc != 5 } {
usage $argv0
exit 1
}
# get param
set host [lindex $argv 0]
set username [lindex $argv 1]
set newpasswd [lindex $argv 2]
set loginname "root"
if { [string compare [lindex $argv 3] "-user"] == 0 } {
set loginname $username
}
set passwd [lindex $argv 4]
puts "$host $username $newpasswd $loginname $passwd"
spawn ssh -l $loginname $host
expect {
"*(yes/no)*" { send "yes/r"; set sshkey 1 }
"*assword:*" { send "$passwd/r"; set sshkey 0 }
if sshkey == 1 {
expect "*password:*"
&nbs_8h"@p; send "$passwd/r"
}
}
expect "*#"
if { [string compare $loginname "root"] == 0 } {
#send "echo /"$username:$newpasswd/" | chpasswd/r"
send "echo /"$newpasswd/" | passwd --stdin /"$username/"/r"
} else {
send "passwd/r"
expect {
"*current*assword:" {send "$passwd/r"}
"passwd: Authentication token manipulation error" {exit}
}
expect "New*assword:"
send "$newpasswd/r"
expect "Retype*assword:"
send "$newpasswd/r"
}
expect "*#"
send "exit/r"
#interact 是否将交互权接过来_8h"@如果接过来，则用户这时可进行交互操作
已使用 Microsoft OneNote 2016 创建。