View source for Expect

==Links.==
 http://floppsie.comp.glam.ac.uk/Glamorgan/gaius/scripting/5.html
 http://expect.nist.gov/scripts/

==info==

timeout
 set timeout 60
timeout of -1 signifies that expect should wait forever.
timeout 0 indicates that expect should not wait at all.

==regexp==
 Optional Regexp
 The postfix question mark (?) operator makes the preceding regexp optional (i.e, it can occur zero or one times). This shorthand is equivalent to a common  use of summing. These two regexps are equivalent:
 
 a(foo)?
 afoo|a

==scripts==

<pre>
Script.
#!/usr/bin/expect -f
#
# expect_ssh.exp
# bjorklun
#
if { $argc < 1 } {
       send_user "Usage: ./ssh-login.exp <username> <password> <hostname> <command> \r"
       exit
}
#
set username [lrange $argv 0 0]
set password [lrange $argv 1 1]
set hostname [lrange $argv 2 2]
set command [lrange $argv 3 3]
set arguments [lrange $argv 4 9]

set timeout -1
match_max 1000

spawn ssh $username@$hostname $command $arguments

expect {
        "Are you sure you want to continue connecting (yes/no)? " {
                send -- "yes\r"
                expect "*?assword:*" {
                        send -- "$password\r"
                        send -- "\r"
                        }
                }
        "*?assword:*" {
                send -- "$password\r"
                send -- "\r"
        }
        "*denied*" {
                puts "You are a loser Andreas\r"
        }
}

expect eof
</pre>
[[Category:Applications]]
[[Category:Unix]]
[[Category:Automation]]