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How do I turn off Autoexpect?
To stop recording keystrokes to your script, press Ctrl+D on your keyboard to stop Autoexpect and copy the buffer to your file.
What is Autoexpect?
Introduction. autoexpect watches you interacting with another program and creates an Expect script that reproduces your interactions. When you have exited the shell (or program that you specified), autoexpect will create a new script for you. By default, autoexpect writes the new script to “script. exp”.
What does << do in Linux?
A command with the << operator will do the following things :
- Launch the program specified in the left of the operator, cat for instance.
- Grab user input, including newlines, until what is specified on the right of the operator is met on one line, EOF for instance.
Where does autoexpect write the Expect script to?
By default, autoexpect writes the new script to “script.exp”. You can override this with the -f flag followed by a new script name. The following example runs “ftp ftp.cme.nist.gov” and stores the resulting Expect script in the file “nist”.
How to build an Expect script in Linux?
You use a command like autoexpect ./installapp and it will build an expect script with the answers that you provide: $ autoexpect ./installapp autoexpect started, file is script.exp Location of installation file> /var/installs Which components to you wish to install [all,core,enduser]> all Is your license file up-to-date?
Why do you need autoexpect in Linux man?
Autoexpect records every character from the interaction in the script. This is desirable because it gives you the ability to make judgements about what is important and what can be replaced with a pattern match. On the other hand, if you use commands whose output differs from run to run, the generated scripts are not going to be correct.
How to automate responses to scripts in Linux?
When you run the script, you should see this: Note that you would just invoke the expect script (ask.exp). The script itself answers the question for you. The first line of the expect script (ask.exp) shown above disables a possible timeout. The second kicks off the script that will be asking for a response using spawn.