Expect command not found in script

Question

I have installed expect command on CentOS 7 with yum install expect -y. I want to automate some input in my script but it seems like it doesn't interpret in bash anymore.

Here is my script :

#!/usr/bin/expect -f
homeDir="/home"

if [ $# -eq 1 ]; then
    CLIENT="$1"
    ./easyrsa build-client-full "$CLIENT" nopass
elif [ $# -eq 2 ]; then
    CLIENT="$1"
    password="$2"
    set timeout -1
    spawn ./easyrsa build-client-full "$CLIENT"
    expect "Enter PEM pass phrase:"
    send -- "$password"
    expect eof
else
    echo "script <username> <password (optional)>"
fi

I made the script executable with chmod +x script and run it like ./script. The error I get :

script: line11: spawn : command not found couldn't read file "Enter PEM pass phrase:": no such file or directory script: ligne13: send : command not found couldn't read file "eof": no such file or directory

If I make whereis expect

I get :

expect: /usr/bin/expect /usr/share/man/man1/expect.1.gz

I would like to ask if there is some alternative without using another lib ?

I also tried using this line of code but this doesn't give any return :

echo "$password" | ./easyrsa build-client-full "$CLIENT"

Your shebang is `#!/usr/bin/expect -f`. So the command in the script will not be interpreted by `bash`, but by `expect` when you run it with `./`. — Aserre, Jan 09 '19 at 15:54
Possible duplicate of [How does the #! shebang work?](https://stackoverflow.com/questions/3009192/how-does-the-shebang-work) — Aserre, Jan 09 '19 at 15:55

score 3 · Accepted Answer · answered Jan 09 '19 at 16:37

3

You basically want an expect script inside a bash script something like this:

#!/bin/bash

homeDir="/home"

if [ $# -eq 1 ]; then
    CLIENT="$1"
    ./easyrsa build-client-full "$CLIENT" nopass
elif [ $# -eq 2 ]; then
    CLIENT="$1"
    password="$2"
    /usr/bin/expect <<EOF
    ...
    DO EXPECT STUFF
    ...
EOF
else
    echo "script <username> <password (optional)>"
fi

answered Jan 09 '19 at 16:37

Mark Setchell

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Doing in this way I have an error of permission. `:awk: fatal : impossible to open file « ... »` – executable Jan 10 '19 at 08:06
Not sure what you have done, but AFAIK there is no `awk` in the script I suggest. – Mark Setchell Jan 10 '19 at 09:08
I think it's beacause the script I call (`./easyrsa`) doesn't have enought permission if I run throught expect – executable Jan 10 '19 at 09:09
Maybe click `edit` under your original question and paste in the code you are now running too. – Mark Setchell Jan 10 '19 at 09:13
I'm not the author of the script `./easyrsa`, and this script it self call another one – executable Jan 10 '19 at 09:15
I also tried using code like `echo "$password" | ./easyrsa build-client-full "$CLIENT"` – executable Jan 10 '19 at 09:39
Sorry, I can neither see what you are running at the top-level, nor what it is calling at the lower level. I can only suggest you turn on debugging, so instead of `./easyrsa` try running `bash -x ./easyrsa` – Mark Setchell Jan 10 '19 at 10:19
I have the error because the script `easyrsa` doesn't generate the certificate – executable Jan 14 '19 at 09:18

Expect command not found in script

1 Answers1