CODEWITHSUNDEEP
unixsendexpect
Ninja
Ninja

Reputation: 5142

issues with expect -send: spawn id exp4 not open

My expect code does this: It does a ssh connect to another machine, sends the password and then returns the hostname of that machine. I give a sample of my code below
#!/usr/bin/expect -f
set ipaddr [lrange $argv 0 0]
set password [lrange $argv 1 1]
set timeout -1
spawn ssh root@$ipaddr hostname
match_max 100000
expect "*assword:*"
send -- "$password\r"
expect eof

This code runs perfectly many times but intermittently, I get the following error
send: spawn id exp4 not open
while executing
"send -- "$password\r""

Why is this happening?

Upvotes: 4

Views: 24496

Answers (1)

Ninja
Ninja

Reputation: 5142

Figured out why. I had generated ssh keys and copied it on to the destination machine. So there was no "Password: " prompt. Hence before send could complete, the ssh connection had closed.

I deleted the ssh keys from the destination machine and ran the script again and observed no issues

Upvotes: 1

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