<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <link rel="Stylesheet" type="text/css" href="../styles/style.css" /> <title>expect - 自动交互脚本</title> </head> <body> <div id="header"> <ul id="top-nav"> <li><a href="../index.html">首页</a></li> <li><a href="index.html">分类首页</a></li> </ul> </div> <div id="cse"></div> <div id="main"> <h1>expect - 自动交互脚本</h1> <div class="toc"> <ul> <li><a href="#toc_0.1">expect参数</a> <ul> <li><a href="#toc_0.1.1">启用选项</a> <li><a href="#toc_0.1.2">常用命令</a> <li><a href="#toc_0.1.3">命令介绍</a> </ul> <li><a href="#toc_0.2">expect范例</a> </ul> </ul> </div> <h2 id="toc_0.1">expect参数</h2> <ul> <li> <a href="expect_handbook.html">expect教程中文版</a> <li> <a href="http://blog.csdn.net/classwang/article/details/3928467">expect中文手册</a> <li> <a href="expect_description.html">expect说明</a> </ul> <h3 id="toc_0.1.1">启用选项</h3> <ul> <li> <code>-c</code>:执行脚本前先执行的命令,可多次使用。 <li> <code>-d</code>:debug模式,可以在运行时输出一些诊断信息,与在脚本开始处使用<code>exp_internal 1</code>相似。 <li> <code>-D</code>:启用交换调式器,可设一整数参数。 <li> <code>-f</code>:从文件读取命令,仅用于使用#!时。如果文件名为"-",则从stdin读取(使用"./-"从文件名为-的文件读取)。 <li> <code>-i</code>:交互式输入命令,使用"exit"或"EOF"退出输入状态。 <li> <code>--</code>:标示选项结束(如果你需要传递与expect选项相似的参数给脚本时),可放到<code>#!</code>行:<code>#!/usr/bin/expect --</code>。 <li> <code>-v</code>:显示expect版本信息。 </ul> <h3 id="toc_0.1.2">常用命令</h3> <pre class="brush:bash"> # 命令行参数 # $argv,参数数组,使用[lindex $argv n]获取,$argv 0为脚本名字 # $argc,参数个数 set username [lindex $argv 1] # 获取第1个参数 set passwd [lindex $argv 2] # 获取第2个参数 set timeout 30 # 设置超时 # spawn是expect内部命令,开启ssh连接 spawn ssh -l username 192.168.1.1 # 判断上次输出结果里是否包含“password:”的字符串,如果有则立即返回,否则就等待一段时间(timeout)后返回 expect "password:" # 发送内容ispass(密码、命令等) send "ispass\r" # 发送内容给用户 send_user "$argv0 [lrange $argv 0 2]\n" send_user "It's OK\r" # 执行完成后保持交互状态,控制权交给控制台(手工操作)。否则会完成后会退出。 interact </pre> <h3 id="toc_0.1.3">命令介绍</h3> <ul> <li> close:关闭当前进程的连接。 <li> debug:控制调试器。 <li> disconnect:断开进程连接(进程仍在后台运行)。 <ul> <li> 定时读取密码、执行priv_prog <pre class="brush:bash"> send_user "password?\ " expect_user -re "(.*)\n" for {} 1 {} { if {[fork]!=0} {sleep 3600;continue} disconnect spawn priv_prog expect Password: send "$expect_out(1,string)\r" . . . exit } </pre> </ul> <li> exit:退出expect。 <li> exp_continue [-continue_timer]:继续执行下面的匹配。 <li> exp_internal [-f file] value: </ul> <h2 id="toc_0.2">expect范例</h2> <ul> <li> 自动telnet会话 <pre class="brush:bash"> #!/usr/bin/expect -f set ip [lindex $argv 0 ] # 接收第1个参数,作为IP set userid [lindex $argv 1 ] # 接收第2个参数,作为userid set mypassword [lindex $argv 2 ] # 接收第3个参数,作为密码 set mycommand [lindex $argv 3 ] # 接收第4个参数,作为命令 set timeout 10 # 设置超时时间 # 向远程服务器请求打开一个telnet会话,并等待服务器询问用户名 spawn telnet $ip expect "username:" # 输入用户名,并等待服务器询问密码 send "$userid\r" expect "password:" # 输入密码,并等待键入需要运行的命令 send "$mypassword\r" expect "%" # 输入预先定好的密码,等待运行结果 send "$mycommand\r" expect "%" # 将运行结果存入到变量中,显示出来或者写到磁盘中 set results $expect_out(buffer) # 退出telnet会话,等待服务器的退出提示EOF send "exit\r" expect eof </pre> <li> 自动建立FTP会话 <pre class="brush:bash"> #!/usr/bin/expect -f set ip [lindex $argv 0 ] # 接收第1个参数,作为IP set userid [lindex $argv 1 ] # 接收第2个参数,作为Userid set mypassword [lindex $argv 2 ] # 接收第3个参数,作为密码 set timeout 10 # 设置超时时间 # 向远程服务器请求打开一个FTP会话,并等待服务器询问用户名 spawn ftp $ip expect "username:" # 输入用户名,并等待服务器询问密码 send "$userid\r" expect "password:" # 输入密码,并等待FTP提示符的出现 send "$mypassword\r" expect "ftp>" # 切换到二进制模式,并等待FTP提示符的出现 send "bin\r" expect "ftp>" # 关闭ftp的提示符 send "prompt\r" expect "ftp>" # 下载所有文件 send "mget *\r" expect "ftp>" # 退出此次ftp会话,并等待服务器的退出提示EOF send "bye\r" expect eof </pre> </ul> <ul> <li> 自动登录ssh执行命令 <pre class="brush:bash"> #!/usr/bin/expect set IP [lindex $argv 0] set USER [lindex $argv 1] set PASSWD [lindex $argv 2] set CMD [lindex $argv 3] spawn ssh $USER@$IP $CMD expect { "(yes/no)?" { send "yes\r" expect "password:" send "$PASSWD\r" } "password:" {send "$PASSWD\r"} "* to host" {exit 1} } expect eof </pre> <li> 自动登录ssh <pre class="brush:bash"> #!/usr/bin/expect -f set ip [lindex $argv 0 ] # 接收第1个参数,作为IP set username [lindex $argv 1 ] # 接收第2个参数,作为username set mypassword [lindex $argv 2 ] # 接收第3个参数,作为密码 set timeout 10 # 设置超时时间 spawn ssh $username@$ip # 发送ssh请求 expect { # 返回信息匹配 "*yes/no" { send "yes\r"; exp_continue} # 第一次ssh连接会提示yes/no,继续 "*password:" { send "$mypassword\r" } # 出现密码提示,发送密码 } interact # 交互模式,用户会停留在远程服务器上面 </pre> </ul> <ul> <li> 批量登录ssh服务器执行操作范例,设定增量的for循环 <pre class="brush:bash"> #!/usr/bin/expect for {set i 10} {$i <= 12} {incr i} { set timeout 30 set ssh_user [lindex $argv 0] spawn ssh -i .ssh/$ssh_user abc$i.com expect_before "no)?" { send "yes\r" } sleep 1 expect "password*" send "hello\r" expect "*#" send "echo hello expect! > /tmp/expect.txt\r" expect "*#" send "echo\r" } exit </pre> </ul> <ul> <li> 批量登录ssh并执行命令,foreach语法 <pre class="brush:bash"> #!/usr/bin/expect if {$argc!=2} { send_user "usage: ./expect ssh_user password\n" exit } foreach i {11 12} { set timeout 30 set ssh_user [lindex $argv 0] set password [lindex $argv 1] spawn ssh -i .ssh/$ssh_user [email protected] expect_before "no)?" { send "yes\r" } sleep 1 expect "Enter passphrase for key*" send "password\r" expect "*#" send "echo hello expect! > /tmp/expect.txt\r" expect "*#" send "echo\r" } exit </pre> </ul> <ul> <li> 另一自动ssh范例,从命令行获取服务器IP,foreach语法,expect嵌套 <pre class="brush:bash"> #!/usr/bin/expect # 使用方法: script_name ip1 ip2 ip3 ... set timeout 20 if {$argc < 1} { puts "Usage: script IPs" exit 1 } # 替换你自己的用户名 set user "username" #替换你自己的登录密码 set password "yourpassword" foreach IP $argv { spawn ssh $user@$IP expect \ "(yes/no)?" { send "yes\r" expect "password:?" { send "$password\r" } } "password:?" { send "$password\r" } expect "\$?" # 替换你要执行的命令 send "last\r" expect "\$?" sleep 10 send "exit\r" expect eof } </pre> </ul> <ul> <li> 批量ssh执行命令,用shell调用tclsh方式、多进程同时执行 <ul> <li> tclsh - Simple shell containing Tcl interpreter <pre class="brush:bash"> #!/bin/sh # -*- tcl -*- \ exec tclsh $0 "$@" package require Expect set username [lindex $argv 0] set password [lindex $argv 1] set argv [lrange $argv 2 end] set prompt "(%|#|\\$) $" foreach ip $argv { spawn ssh -t $username@$ip sh lappend ids $spawn_id } expect_before -i ids eof { set index [lsearch $ids $expect_out(spawn_id)] set ids [lreplace $ids $index $index] if [llength $ids] exp_continue } expect -i ids "(yes/no)\\?" { send -i $expect_out(spawn_id) yes\r exp_continue } -i ids "Enter passphrase for key" { send -i $expect_out(spawn_id) \r exp_continue } -i ids "assword:" { send -i $expect_out(spawn_id) $password\r exp_continue } -i ids -re $prompt { set spawn_id $expect_out(spawn_id) send "echo hello; exit\r" exp_continue } timeout { exit 1 } </pre> </ul> </ul> <ul> <li> ssh登录过程常规提示文字 <pre> The authenticity of host '192.168.17.35 (192.168.17.35)' can't be established. RSA key fingerprint is 25:e8:4c:89:a3:b2:06:ee:de:66:c7:7e:1b:fa:1c:c5. Are you sure you want to continue connecting (yes/no)? Warning: Permanently added '192.168.17.35' (RSA) to the list of known hosts. Enter passphrase for key '/data/key/my_dsa': Last login: Sun Jan 26 13:39:37 2014 from 192.168.11.143 [root@master003 ~]# [email protected]'s password: Last login: Thu Jan 23 17:50:43 2014 from 192.168.11.102 [root@lvsmaster ~]# </pre> </ul> <ul> <li> ssh自动登录expect脚本:ssh.expect <pre class="brush:bash"> #!/usr/bin/expect -f # Auther:YuanXing # Update:2014-02-08 if {$argc < 4} { send_user "Usage:\n $argv0 IPaddr User Passwd Port Passphrase\n" puts stderr "argv error!\n" sleep 1 exit 1 } set ip [lindex $argv 0 ] set user [lindex $argv 1 ] set passwd [lindex $argv 2 ] set port [lindex $argv 3 ] set passphrase [lindex $argv 4 ] set timeout 6 if {$port == ""} { set port 22 } #send_user "IP:$ip,User:$user,Passwd:$passwd,Port:$port,Passphrase:$passphrase" spawn ssh -p $port $user@$ip expect_before "(yes/no)\\?" { send "yes\r"} expect \ "Enter passphrase for key*" { send "$passphrase\r" exp_continue } " password:?" { send "$passwd\r" exp_continue } "*\[#\\\$]" { interact } "* to host" { send_user "Connect faild!" exit 2 } timeout { send_user "Connect timeout!" exit 2 } eof { send_user "Lost connect!" exit } </pre> <li> Mikrotik backup script using ssh and expect <ul> <li> <a href="http://www.pmoghadam.com/homepage/HTML/mikrotik-backup-script-ssh-expect.html">http://www.pmoghadam.com/homepage/HTML/mikrotik-backup-script-ssh-expect.html</a> <pre class="brush:bash"> #!/bin/bash # BY: Pejman Moghadam # TAG: mikrotik, ssh, expect, lftp # DATE: 2012-05-27 14:42:14 BACKUP_DIR="/var/backups" HOSTNAME="192.168.88.1" PORT="22" USER="admin" PASS="123456" TMP=$(mktemp) TODAY=$(date +%F) FILENAME="$HOSTNAME-$TODAY" PATH="/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin" # create expect script cat > $TMP << EOF #exp_internal 1 # Uncomment for debug set timeout -1 spawn ssh -p$PORT $USER@$HOSTNAME match_max 100000 expect -exact "password:" send -- "$PASS\r" sleep 1 expect " > " send -- "/export file=$FILENAME\r" expect " > " send -- "/system backup save name=$FILENAME\r" expect " > " send -- "quit\r" expect eof EOF # run expect script #cat $TMP # Uncomment for debug expect -f $TMP # remove expect script rm $TMP # download and remove backup files # "xfer:clobber on" means overwrite existing files cd ${BACKUP_DIR} echo " set xfer:clobber on get ${FILENAME}.rsc rm ${FILENAME}.rsc get ${FILENAME}.backup rm ${FILENAME}.backup" | lftp -u $USER,$PASS $HOSTNAME </pre> </ul> </ul> </div> <div id="footer"> <p> © 2012 - 2015 XStar | <a href="http://code.google.com/p/vimwiki/" title="vimwiki">Powerby:Vimwiki</a> | <a href="http://kwiki.github.io" title="丘迟">Style:丘迟</a> | <a href="../index.html">首页</a> | <a href="index.html">分类首页</a> | <a href="../SiteMap.html">站点地图</a> </p> </div> <script type="text/javascript">var vimwiki_rootpath="../";</script> <script type="text/javascript" src="http://cdn.staticfile.org/jquery/2.0.0/jquery.min.js"></script> <script type="text/javascript" src="../scripts/vimwiki.js"></script> </body> </html>
expect - 自动交互脚本
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