Expect language manual

Expect is an extension to the Tcl scripting language written by Don Libes. The program automates interactions with programs that expose a text terminal interface. Expect, originally written in for the Unix platform, has since become available for Microsoft Windows and other systems. The core of Expect’s language facilities are provided by Tcl, a language used by many other tools. “Tcl” stands for Tool Command Language. It comes as a library intended to be embedded in applications, providing a generic language facility to any application. Tcl solves a long-standing problem in designing application languages. ECE CS Tutorial-3 Expect Basics 3 • Executing Expect – Using Expect interpreter – Executing Expect script files from Unix. – For simplicity, is used as prompt for Expect interpreter. • Three central commands: send, expect and spawn. – send: send a string to a connected process.

The core of Expect’s language facilities are provided by Tcl, a language used by many other tools. “Tcl” stands for Tool Command Language. It comes as a library intended to be embedded in applications, providing a generic language facility to any application. Tcl solves a long-standing problem in designing application languages. Expect command or expect scripting language is a language that talks with your interactive programs or scripts that require user interaction. Expect scripting language works by expecting input, then the Expect script will send the response without any user interaction. You can say that this tool is your robot, which will automate your scripts. Expect is a tool for automating interactive applications such as telnet, ftp, passwd, fsck, rlogin, tip, etc. Expect really makes this stuff trivial. Expect is also useful for testing these same applications. And by adding Tk, you can also wrap interactive applications in X11 GUIs. Expect can make easy all sorts of tasks that are prohibitively difficult with anything else.

Expect: is a script language used to automate and replicate queries and responses manual command line interfaces. Expect was used to automate sending relay. Following the script, Expect knows what can be expected from a program More information on forming glob-style patterns can be found in the Tcl manual. Alternatively, make sure you have execute permission set on the Expect script, and run it as would any shell script; without explicitly specifying the.