[shell] expect的一些例子

到rpmfind可以下载到expect

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例一：追加到文本前（利用vi）

#!/usr/bin/expect
set a [lindex $argv 0]
set b [lindex $argv 1]
spawn vi $b
expect "*"
send "O"
send "$a"
send "3"
send ":"
send "wq"
send " "
expect eof

[lindex $argv 0] 第一个变量，类似""

[lindex $argv 1] 第二个变量，类似""

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例二：自动su

#!/usr/bin/expect
set password 123
spawn su
expect "*password:"
send "$password "
interact

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例三：passwd tmp用户

#!/usr/bin/expect
spawn passwd tmp
set password 345
expect "*password:"
send "$password "
expect "*password:"
send "$password "
expect eof

原文转自：http://www.ltesting.net