Expect: Introduction and Overview Expect —. A Tool For Automating. Interactive Programs. Don Libes .. Exploring Expect (O'Reilly), ISBN: If you can afford the cost of the book, please download it from OREILLY It is fair to read the Although Exploring Expect is based on Tcl, programmers attempting to. Exploring Expect Don Libes "O'Reilly Media,. Inc." A Tcl-based Toolkit for Automating Interactive Programs "O'Reilly Media, Download PDF Exploring Expect.
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O'REILLY~. Exploring Expect. Expect is quickly becoming a pan of cvely UNIX user'S toolbox. It allows you toll(Orn:!le tclnet, ftp, pass\vd, rlogin, and hundreds. A Tel-based Toolkit for Automating Interactive Programs. Exploring. Expect. ANUTSHELL. LDUZ LIELS. 0. HANDRIOK. O'Reilly & Associates, Inc. Copyrighted. A Tcl-based Toolkit for Automating Interactive Programs. For example, you can use Expect to test interactive programs with no changes to their interfaces. Don Libes is the creator of Expect as well as the author of this book.
It allows you to automate Telnet, FTP, passwd, rlogin, and hundreds of other applications that normally require human interaction. Using Expect to automate these applications will allow you to speed up tasks and, in many cases, solve new problems that you never would have even considered before. For example, you can use Expect to test interactive programs with no changes to their interfaces. Or wrap interactive programs with Motif-like front-ends to control applications by buttons, scrollbars, and other graphic elements with no recompilation of the original programs. You don't even need the source code!
DejaGnu is a testing suite written using Expect for use in testing.
It has been used extensively for testing GCC and is very[ citation needed ] well suited to testing remote targets such as embedded development. One can automate the generation of an expect script using a tool called 'autoexpect'.
This tool observes your actions and generates an expect script using heuristics. Though generated code may be large and somewhat cryptic, one can always tweak the generated script to get the exact code.
Open a telnet session to a remote server, and wait for a username prompt. This can be displayed, or written to disk.
For example, the file size is indeed big and the network speed is really one problem, you'd better set this parameter a value. You can, however, add code that will prompt you for your password rather than giving your password as an argument.
This should be more secure. See the example below.
This included Tk support as well as a large number of enhancements. A few changes were made to the user interface itself, which is why the major version number was changed.
A production version of Expect 4 was released in August In October , an alpha version of Expect 5 was released to match Tcl 7. A large number of enhancements were made, including some changes to the user interface itself, which is why the major version number was changed again.
The production version of Expect 5 was released in March ' In the summer of , substantial rewriting of Expect was done in order to support Tcl 8. Expect was never ported to 8.
The user interface is highly but not entirely backward compatible. See the NEWS file in the distribution for more detail. There are important differences between Expect 3, 4, and 5.
Expect 5. The Expect book became available in January ' It describes Expect 5 as it is today, rather than how Expect 5 was when it was originally released. Thus, if you have not upgraded Expect since before getting the book, you should upgrade now.