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Top Forums Shell Programming and Scripting Redirect string from bash stderr to user stdin Post 302998297 by Corona688 on Monday 29th of May 2017 02:10:18 PM
Old 05-29-2017
If you want to script interaction with a program expecting human input, bash and most other shells are very bad at that. Pipes are poor substitutes for the interactive terminal the program is obviously expecting, they tend to deadlock with each process waiting for the other and no way to notify each other of said fact.

If your interaction is any more complicated than typing one number and hitting enter, you might look into the expect language, which is designed for these sort of problems. It will allocate a PTY which allows it to control the program it's communicating with asynchronously without all the piping and redirection.

Last edited by Corona688; 05-29-2017 at 03:15 PM..
 

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COMMAND-NOT-FOUND(1)					    http://en.opensuse.org/Sco					      COMMAND-NOT-FOUND(1)

NAME
command-not-found - A command-not-found handler SYNOPSIS
command-not-found {binary_name} {repository} ARGUMENTS
The following arguments are required: binary_name The name of binary you are looking for. repository The name of repository for search. For most cases, use zypp DESCRIPTION
command-not-found handler is designed to tell users which package contains a missing command. The handler is integrated to bash(1) and zsh(1) shells and is not necessary to call it directly. Just type a name of the command in your favourite shell and you'll get a result. If you consider c-n-f handler useless, just add unset command_not_found_handle to your profile or remove the command-not-found package. Handler doesn't call the command-not-found binary directly, it only prints info about it. If you want to invoke it automatically, just add export COMMAND_NOT_FOUND_AUTO=1 to your bash profile. EXAMPLE
: NORMAL USAGE For example you want to try blender, because you have heard that is an amazing program. So just type blender in shell: $ blender You get the following output: The program 'blender' can be found in the following package: * blender [ path: /usr/bin/blender, repository: zypp (openSUSE 11.1-0) ] Try installing with: sudo zypper install blender bash: blender: command not found SEE ALSO
scout(1) AUTHOR
Pavol Rusnak <stick@gk2.sk> Developer http://gitorious.org/opensus 08/07/2009 COMMAND-NOT-FOUND(1)
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