Your question: How do I run an expect script in Linux?

How do I run a script in Linux?

Steps to write and execute a script

  1. Open the terminal. Go to the directory where you want to create your script.
  2. Create a file with . sh extension.
  3. Write the script in the file using an editor.
  4. Make the script executable with command chmod +x .
  5. Run the script using ./.

How use Linux expect?

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 do I expect a bash script?

How to Use Expect In Bash Script

  1. Step 1 : Create a new file. vi expectcmd.
  2. Step 2 : Copy and paste below given content in file. …
  3. Step 3: Make your file executable by owner of file , run the given below command. …
  4. Step 4: Give commands as argument along with expectcmd script.

What is expect in Linux?

Expect is a program that “talks” to other interactive programs according to a script. Following the script, Expect knows what can be expected from a program and what the correct response should be. … It behaves just like Expect and Tk’s wish. Expect can also be used directly in C or C++ (that is, without Tcl).

How do you end an expect script?

close would close the connection to the other process, so in sense acting as the reverse of expect eof . Again, your script could continue after this. Using close just before exiting the script doesn’t do much, as an exit will also implicitly close . Then there’s exit that exits your script.

How do I run a script from command line?

Run a batch file

  1. From the start menu: START > RUN c:path_to_scriptsmy_script.cmd, OK.
  2. “c:path to scriptsmy script.cmd”
  3. Open a new CMD prompt by choosing START > RUN cmd, OK.
  4. From the command line, enter the name of the script and press return. …
  5. It is also possible to run batch scripts with the old (Windows 95 style) .

What is the Run command in Linux?

On an operating system like Unix-like systems and Microsoft Windows, the run command is used for directly opening a document or application whose path is well known.

How do you create a script?

You can create a new script in the following ways:

  1. Highlight commands from the Command History, right-click, and select Create Script.
  2. Click the New Script button on the Home tab.
  3. Use the edit function. For example, edit new_file_name creates (if the file does not exist) and opens the file new_file_name .

How do you check if expect is installed in Linux?

Today, we will see how to find if a package is installed or not in Linux and Unix operating systems. Finding installed packages in GUI mode is easy. All we have to do is to Just open the Menu or Dash, and enter the package name in search box. If the package is installed, you will see the menu entry.

What type of terminal does CLI expect?

Expect is used to automate control of interactive applications such as Telnet, FTP, passwd, fsck, rlogin, tip, SSH, and others. Expect uses pseudo terminals (Unix) or emulates a console (Windows), starts the target program, and then communicates with it, just as a human would, via the terminal or console interface.

What is Interact in expect?

Interact is an Expect command which gives control of the current process to the user, so that keystrokes are sent to the current process, and the stdout and stderr of the current process are returned.

How do you use variables in expect script?

#!/usr/bin/expect set host [lindex $argv 0] set user [lindex $argv 1] set pass [lindex $argv 2] set action [lindex $argv 3] set path [lindex $argv 4] puts “Starting….” puts “”$action”” spawn sftp $user@$host expect “password:” send “$passr” expect”sftp>” send “cd $pathr” if {$action == “TEST”} { # Do something } …

How do you pass arguments to expect script?

If you are new to expect scripting language, first start with our expect hello world example.

  1. Execute expect script from the command line using -c option. …
  2. Execute expect script interactively using -i option. …
  3. Print debug messages while executing expect script. …
  4. Enable expect debugger using -D.

How do you use loop in expect script?

Expect For Loop Examples:



for {initialization} {conditions} {incrementation or decrementation} { … } Expect for loop example : for {set i 1} {$i < $no} {incr i 1} { set $total [expr $total * $i ] } puts "$total"; Note: You should place the loop open brace in the same line as it contains “for” keyword.

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