Different fork/expect behavior in RHEL5 and RHEL4...???

Passions · 06-23-2009, 06:09 PM

So I have a piece of code that looks like this:

Code:

#!/usr/bin/expect

if {[fork]==0} then {
     spawn bash
     send "echo hi\r"
     expect eof
     exit
}

In RHEL4.4, it spits out this:

Code:

[root@asdf scripts]# ./test.sh
spawn bash
[root@asdf scripts]# echo hi
[root@asdf scripts]# echo hi
hi

But in RHEL5.1, I only get this:

Code:

[root@asdf scripts]# ./test.sh
spawn bash
[root@asdf scripts]#

I don't receive any "hi". Anyone know why fork or expect is behaving differently? I looked at the versions of expect, on RHEL4.4 it's 5.42.1 and on RHEL5.1 it's 5.43. I tried to downgrade the version of expect on the 5.1 machine, but it still didn't work. Any ideas?

Thanks.

Passions · 06-24-2009, 03:54 PM

Ok, I found a solution for those who might have the same issue in the future.

I copied /usr/lib/libtclx8.4.so from a RHEL4 over to the RHEL5 machine, it works just as before.

Thanks.