Tcl/Tk in a Nutshell

Name

expect

expect [[options] pat1 body1] ... [options] patn [bodyn]

Compare output from one or more spawned processes against patterns. If a match is found, execute the associated code body and return.

The exp_continue command inside a body causes the expect statement to continue execution rather than returning.

Patterns

The pattern can be a string. By default, shell globbing is used, but this can be changed using options listed in the next section. A pattern can also be one of the following special names:

eof

Matches end of file.

full_buffer

Matches when maximum number of bytes has been received with no pattern match.

null

Matches a single ASCII NUL (0) character.

timeout

Matches when timeout occurs with no pattern matched.

default

Matches if timeout or eof occur.

Options

-timeout seconds

Specify amount to wait before timing out.

-i spawn_id_list

Match against the listed spawn IDs; either a literal list or a global variable name containing the list.

-gl

Use glob-style pattern matching (default).

-re

Use regular expression pattern matching.

-ex

Use exact string pattern matching.

-nocase

Make matching case-insensitive.