使用expect脚本自动进行ssh登录

  1. 安装 expect 和 openssh

  2. 编写 ssh-pass 脚本，放入 $PATH 的搜索范围

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     #!/usr/bin/expect
 #Usage ssh-pass <host> <ssh user> <ssh password>

 set timeout 60
 set username [lindex $argv 1]
 set password [lindex $argv 2]
 set hostname [lindex $argv 0]
 log_user 0

 if {[llength $argv] == 0} {
   send_user "Usage: ssh-pass hostname username \'password\'\n"
   exit 1
 }

 send_user "\n#####\n# $hostname\n#####\n"

 spawn ssh -q -oStrictHostKeyChecking=no -oCheckHostIP=no $username@$hostname

 expect {
   timeout { send_user "\nFailed to get password prompt\n"; exit 1 }
   eof { send_user "\nSSH failure for $hostname\n"; exit 1 }
   "*?assword"
 }

 send "$password\r"

 interact

  3. 在 bash 中创建快捷函数

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     function sshtest() {
   ssh-pass 192.168.100.$1 root your-pass
 }