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Top Forums Shell Programming and Scripting How to pass arguments to an interactive script? Post 302885531 by progkcp on Monday 27th of January 2014 08:51:12 AM
Old 01-27-2014
How to pass arguments to an interactive script?

I've tried to find a solution to this, but I"m stumped.

OS - RH Linux 5.9

I have a bash script <myProgram.sh> that gets executed manually and creates a small response file. I'm trying to automate the running of this script.

When myProgram.sh runs, it prompts the user to enter 2 pieces of information.

For the first input the user is told to hit Enter for is a line feed.

The second input is [Y]es.

Example:

Code:
./myProgram.sh

First prompt:
Press Enter to Continue

Second prompt:
Enter [Y]es, [N]o) [N]

I'd like to automate the execution of this script.


I figure that if I can do it from the command line, then I can script it.

Here is the closest that I've tried:

echo -e "\n" | ./emocmrsp

This seems to pass in a line feed, which answers the first prompt, but it doesn't pass anything to the second prompt.

So, I"m struggling with what to do for the second prompt.


I tried this but it didn't work.

This echos the linefeed "\n" for the first prompt, but fails for the second prompt.

echo -e "\n" "Y\n" | ./emocmrsp


([Y]es, [N]o) [N]: Invalid value specified.


Any suggestions?

Last edited by Corona688; 01-27-2014 at 02:28 PM..
 

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ATF-SH(1)						    BSD General Commands Manual 						 ATF-SH(1)

NAME
atf-sh [-s shell] -- interpreter for shell-based test programs SYNOPSIS
atf-sh script DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library. atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter- preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not use any non-standard extensions. The following options are available: -s shell Specifies the shell to use instead of the value provided by ATF_SHELL. ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes. ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes. ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a specific interpreter. EXAMPLES
Scripts using atf-sh(3) should start with: #! /usr/bin/env atf-sh Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode the path to atf-sh in the script and then use the -s option afterwards as a single parameter: #! /path/to/bin/atf-sh -s/bin/bash ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts. SEE ALSO
atf-sh(3) BSD
September 27, 2014 BSD
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