分类: LINUX
2013-04-24 17:44:34
修改本地用户密码:
1、交互配置本地用户:
以root用户:
passwd
Changing pass for user dewang.
New UNIX pass :
BAD PASS : 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
或
echo
或
将
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
#!/bin/sh
# /
exec expect -f "$0" ${1+"$@"}
if { $argc != 2 } {
puts "Usage: $argv0
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 -f "$0" ${1+"$@"}
根据echo
#!/bin/sh
if [ $# -ne 2 ] ; then
echo "Usage: `basename $0`
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
如:
echo "newpass" | ssh -l root 10.11.103.151 passwd --stdin dewang
password:
Changing password for user dewang.
passwd: all authentication tokens updated successfully.
或
echo
或
将
chpasswd < passwd.tmp [作者未测试]
或
ssh -l root
.... 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
to change user password by ssh remote machine
proc usage {funcname} {
puts "Usage: "
puts " $funcname
puts " $funcname
}
# 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:*"
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,如果接过来,则用户这时可进行交互操作