怎样让expect进程后台执行呢？看这里

后台执行的方法：disconnect

#!/usr/bin/expect

spawn openvpn --config ./test.ovpn
) ]. L) }- T5 G! a7 ~expect "*Username:"
* h: t( n* z3 \% h& ysend "root\r"

expect "*Password:"* u* T" _3 X7 Y" `3 m
send "passwd\r"

if [fork]!=0 exit' ^. \% |. ~6 d# N5 t- T" K
disconnect

传递参数的方法：set name [lindex $argv 0]

#!/usr/bin/expect) y( x3 Z: j; q* k1 [& v
* A5 b2 j! ~$ P6 f3 M* H8 t. q
if { $argc != 2 && $argc != 1 } {
1 S. \$ [" u7 N. @. n$ I5 V    send_user "Usage:auth username \[password\]\n"
9 f! j$ R2 W/ {( G. k( r    send_user "\tthe default password equals 0000\n"" V0 Q; y) a/ ^
    exit
- z( A6 R& E( y! Y$ p}
8 {/ P: G. W8 a0 Q" C" }  t/ ~( n6 _6 c# C
set name [lindex $argv 0]
8 g" k+ s7 }  h3 b/ E2 Eif { $argc == 2 } {8 I% }3 A2 q/ O/ j2 y
    set pass [lindex $argv 1]
6 u! V3 n! e/ ?( ~3 a1 E$ v} else { set pass "0000" }
( G9 j( C* N0 X+ i! R: G. w$ k* g" l1 {0 O9 ^
spawn xrgsu
; G' h  w3 W! u% ?+ o
: g3 |8 i' u( ]% E& Y# expect 开始
4 V5 M- h. T# X8 V0 ]expect "*user*" { send ${name}\r }
2 n8 j7 D8 N! wexpect "*password:" { send ${pass}\r }1 y% A7 z" M( L7 K$ x$ K5 D# c
expect "*DHCP*" { send "\r" }
7 a1 ?/ p. q- A  L" w/ Kexpect "*auth*" { send "\r" }
0 _% X! V' H% n9 X4 M; `, i
( k8 |( A, C( \+ \interact/ J5 O1 K; z: `; X" {
#EOF