expect foreach 问题

hanfeng122525

foreach 嵌套：


#!/usr/bin/expect
foreach ip {
192.168.88.156
192.168.88.157
} {
spawn ssh $ip  ------------------------------1
foreach file {
shell-slave
mysql
} {
#     spawn ssh $ip--------------------------2
expect {
        "yes/no" {send "yes\r";exp_continue}
        "*password:" {send "root\r"}
        }
set timeout 20
expect "#"
send "touch $file\r"
expect eof
}
}

放在 1 处的结果：


[root@shell-master ~]# /usr/bin/expect 2.sh
spawn ssh 192.168.88.156
root@192.168.88.156's password:
Last login: Mon Sep 16 02:40:58 2013 from 192.168.88.155
[root@shell-slave ~]# touch shell-slave
[root@shell-slave ~]# touch mysql
[root@shell-slave ~]# spawn ssh 192.168.88.157
root@192.168.88.157's password:
Last login: Mon Sep 16 02:41:39 2013 from 192.168.88.155
[root@mysql ~]# touch shell-slave
[root@mysql ~]# touch mysql

放在 2 处的结果：

[root@shell-master ~]# /usr/bin/expect 2.sh
spawn ssh 192.168.88.156
root@192.168.88.156's password:
Last login: Mon Sep 16 02:18:04 2013 from 192.168.88.155
[root@shell-slave ~]# touch shell-slave
[root@shell-slave ~]# spawn ssh 192.168.88.156
root@192.168.88.156's password:
Last login: Mon Sep 16 02:40:38 2013 from 192.168.88.155
[root@shell-slave ~]# touch mysql
[root@shell-slave ~]# spawn ssh 192.168.88.157
root@192.168.88.157's password:
Last login: Mon Sep 16 02:18:14 2013 from 192.168.88.155
[root@mysql ~]# touch shell-slave
[root@mysql ~]# spawn ssh 192.168.88.157
root@192.168.88.157's password:
Last login: Mon Sep 16 02:41:19 2013 from 192.168.88.155
[root@mysql ~]# touch mysql

这两种结果有什么区别吗，想了好久都没想明白，第一处好像是嵌套，是预期的效果，第二处的话，这个应该不是嵌套，只是单纯的每个执行两遍，望各位解释下！谢谢！

waker

2和4的区别想多久才能明白呢？