May 16, 2011 · I've never used expect before but need a script to do the following for a large list of hosts. ssh into a machine; su to root and enter the root password; sed a file in /etc/passwd to replace some text with some other text, for this example lets just say the original text is TEXT and the text to replace it with is NEWTEXT; Can anyone help?

Oct 3, 2018 · Basically in the expect script, In this part of the code: send "/usr/local/bin/authtool --totp --base32 $(sed -n '/^secret=/s///p' ~/.Auth.sc)\r" Its treating $(sed -n '/^secret=/s///p' ~/.Auth.sc) as an expect variable, which in fact its not.

Expectk is a mixture of Expect and Tk. It behaves just like. Expect and Tk 's wish. Expect can also be used directly in C or. C++ (that is, without Tcl). See libexpect(3). The name "Expect" comes from the idea of send/expect sequences. popularized by …

Aug 8, 2013 · If you really need to use expect with telnet or something, how about this: save the sed script in somewhere in your remote_server, like /usr/local/bin/del_kw.sh, and then execute it by expect. I think this is more manageable way to solve your problem.

Oct 12, 2010 · Using expect script sysadmins and developers can automate redundant tasks easily. It works by expecting specific strings, and sending or responding strings accordingly. Following three expect commands are used when automating any interactive processes. send – to send the strings to the process; expect – wait for the specific string from the ...

Apr 8, 2010 · Use Tcl's {} operator instead of double quotes around the string you want to send. The {} syntax in Tcl is equivalent to single quote in bash, meaning "literal string, do not interpret its contents". Inside the {} put exactly what you want Tcl/Expect to send to the subprocess, character for character, no extra quoting required.

Jul 6, 2024 · 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.

Jul 8, 2017 · if you want the expect script to expand the variable, but you need the double quotes in the value set new "\"$Backend1Name\"" I question whether you want the literal double quotes around the name to show up in the YAML file.

Jun 21, 2022 · The expect command offers a way to control interactive applications which require user input to continue. This article explains how to use the expect command with practical examples.

Nov 6, 2013 · I am currently attempting to trim a string using SED within an Expect script. I am looking to remove either all but the first line or everything after a specific word. The string is: