1.下载expect和tcl
下载地址:http://download.csdn.net/download/tobyaries/5754943
2.安装expect
tar -zxvf tcl8.4.11-src.tar.gz
tar -zxvf expect-5.43.0.tar.gz
cd tcl8.4.11/unix
./configure
make && make install
cd expect-5.43
./configure --with-tcl=/usr/local/lib/ --with-tclinclude=/data/software/tcl8.4.11
make && make install
3.脚本测试
- #!/usr/bin/expect -f
- set timeout 30
- set name [lindex $argv 0]
- set pw [lindex $argv 1]
- log_user 0
- spawn passwd $name
- for {set i 1} {$i < 3} {incr i} {
- expect "*password:" {send "$pw\r"}
- }
- expect "*successfully"
- send_user "Password updated successfully\n"
- expect eof
[解析]
很简单的程序,首先把第一个参数赋值给变量name作为用户名,把第二个参数赋值给pw作为密码。然后关闭标准输出,就是类似shell的 "> /dev/null",然后spawn开启子进程运行passwd程序,因为会重复输入2次密码,所以这里我们用到了TCL语法的for循环,执行2次密码输入。最后匹配到successfully字样的就输出修改成功,然后退出脚本。