Problem in Expect Script

Accrio · 10-14-2008, 04:08 PM

Hi All

Am facing a problem running an expect script .

The script sends a negative number . The problem is at the statement --

Example Statement

expect "abcd"
send "-1\r"

Am not able to send negative numbers , is there any other args that i should specify with send command .
The error message at the send statement is

": must be -i, -h, -s, -null, -0, -raw, -break, or --
while executing
"send "-1\r""

Thanks in advance.

MensaWater · 10-14-2008, 04:30 PM

It's probably reading the "-" as an attempt to set a flag. Try escaping the "-":
send "\-1\r"

Here the first \ is an escape. The second one is a special character recognized by expect (and echo).

You may have to play with it a bit to get the right sequence. It may not like the quote around the first \ so you might try:
send \-1"\r"

Accrio · 10-15-2008, 09:33 PM

It works fine if i use a flag "--" with send.
send -- "-1\r"

Thanks for the reply