expect实现远程主机自动执行命令脚本：

#!/usr/bin/expect --
 
if { [llength $argv] < 4 } {
    puts "Usage: $argv0 ip user passwd port commands timeout"
    exit 1
}
 
match_max 600000
 
set ip [lindex $argv 0]
set user [lindex $argv 1]
set passwd [lindex $argv 2]
set port [lindex $argv 3]
set commands [lindex $argv 4]
set timeoutflag [lindex $argv 5]
 
set yesnoflag 0
set timeout $timeoutflag
 
 
for {} {1} {} {
# for is only used to retry when "Interrupted system call" occured
 
spawn /usr/bin/ssh -q -l$user -p$port $ip
 
expect     {
 
    "assword:" {
        send "$passwd\r"
        break;
    }
 
    "yes/no)?" {
        set yesnoflag 1
        send "yes\r"
        break;
    }
 
    "FATAL" {
        puts "\nCONNECTERROR: $ip occur FATAL ERROR!!!\n"
        exit 1
    }
 
    timeout {
        puts "\nCONNECTERROR: $ip Logon timeout!!!\n"
        exit 1
    }
 
    "No route to host" {
        puts "\nCONNECTERROR: $ip No route to host!!!\n"
        exit 1
    }
 
    "Connection Refused" {
        puts "\nCONNECTERROR: $ip Connection Refused!!!\n"
        exit 1
    }
 
    "Connection refused" {
        puts "\nCONNECTERROR: $ip Connection Refused!!!\n"
        exit 1
    }
 
    "Host key verification failed" {
        puts "\nCONNECTERROR: $ip Host key verification failed!!!\n"
        exit 1
    }
 
    "Illegal host key" {
        puts "\nCONNECTERROR: $ip Illegal host key!!!\n"
        exit 1
    }
        
    "Connection Timed Out" {
        puts "\nCONNECTERROR: $ip Logon timeout!!!\n"
        exit 1
    }
 
    "Interrupted system call" {
        puts "\n$ip Interrupted system call!!!\n"
    }
}
}
 
if { $yesnoflag == 1 } {
    expect {
        "assword:" {
            send "$passwd\r"
        }
 
        "yes/no)?" {
            set yesnoflag 2
            send "yes\r"
        }
    }
}
 
if { $yesnoflag == 2 } {
    expect {
        "assword:" {
            send "$passwd\r"
        }
    }
}
 
expect {
    "]" {send "$commands \r"}
    "assword:" {
        send "$passwd\r"
        puts "\nPASSWORDERROR: $ip Password error!!!\n"
        exit 1
    }
}
 
expect {
    "]" {send "sleep 1 \r"}
}
 
expect {
    "]" {send "exit\r"}
}
 
expect eof {
    puts "OK_SSH: $ip\n"
    exit 0;
}

用法：

./ssh.exp
Usage: ./ssh.exp ip user passwd port commands timeout