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What is expect utility?
“Expected utility” is an economic term summarizing the utility that an entity or aggregate economy is expected to reach under any number of circumstances. The expected utility is calculated by taking the weighted average of all possible outcomes under certain circumstances.
What does expect command do in Linux?
The Linux expect command takes script writing to an entirely new level. Instead of automating processes, it automates running and responding to other scripts. In other words, you can write a script that asks how you are and then create an expect script that both runs it and tells it that you’re ok.
How to automate shell scripts with expect command?
The other rows that remain are the Expect script that connects to our shell script. Last line if the end of the file which means is the end of the interaction. Now it’s time to run the script, just make sure the script is executable. If the script is not executable, then you can use the following command:
How to automate shell scripts like magic like Geeks?
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. If the expect command if not installed on your system, you can install it using the following command: $ apt-get install expect
How does autoexpect work in expect hostadvice?
Autoexpect works by recording a shell session. Each keystroke and shell response is recorded and written to an Expect script, script.exp. Given the dynamic nature of computers, no two sessions may be completely alike so running the raw script generated from a single session may not work as expected when run again.
How can I create a script in expect?
An excellent way of building an Expect script is to use a shell recorder program known as Autoexpect. Autoexpect works by recording a shell session. Each keystroke and shell response is recorded and written to an Expect script, script.exp.