Identifying interactive scripts Post: 302985156

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Top Forums Shell Programming and Scripting Identifying interactive scripts Post 302985156 by Don Cragun on Monday 7th of November 2016 12:43:49 AM

11-07-2016

Registered User

There are an unlimited number of patterns you could look for that are common to all POSIX conforming shells. There are others that are specific to specific shells. There are others that are specific to certain versions of certain shells.

Adding the line you say you want to add in the place you say you want to add it will be a syntax error in many cases. You CAN NOT add fixed text in a fixed position after a prompt is written and a response is read without fully understanding the context of the code in question. For example:

Code:

printf 'Initial prompt for filename: '
while IFS= read -r answer
do	# Validate response...
	if [ -r "$answer" ]
	then	break
	fi
	printf '"%s" is not readable.\nSecondary prompt for filename: ' "$answer"
done

will not work if you insert your new statement after the while before the do.

Note also that most of the code you could be used to produce prompts in an interactive script can, with appropriate file redirections, be used in a non-interactive script with the prompt being redirected to a log file and the response being read from a configuration file.

Note also that interactive programs can be written in C, C++, FORTRAN java, awk, and hundreds of other programming and scripting languages; and sticking shell code into the middle of an object file or into the source of an interactive program that is not a shell script will not work.

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LEARN ABOUT DEBIAN

irunner

IRUNNER(1)																IRUNNER(1)

NAME

       irunner - interactive runner interface

SYNOPSIS

       irunner [options] file_to_run

DESCRIPTION

       irunner	is  an	interface to the various interactive runners available in IPython's irunner module.  It can used to run scripts as if they
       where typed up interactively.

       The already implemented runners are listed below; adding one for a new program is a trivial task, see the source for examples.

OPTIONS

       -h, --help
	      show this help message and exit

       --ipython
	      IPython interactive runner (default).

       --python
	      Python interactive runner.

       --sage SAGE interactive runner.

EXAMPLE

       irunner.py --python -- --help will pass --help to the python runner.  Similarly, irunner.py --ipython -- --interact script.ipy

SEE ALSO

       ipython(1)

AUTHOR

       irunner	 is   an   extension   of   Ken   Schutte   <kschutte-AT-csail.mit.edu>'s   script   contributed   on	the   ipython-user   list:
       http://mail.scipy.org/pipermail/ipython-user/2006-May/003539.html

       This  manual  page  was written by Bernd Zeimetz <bernd@bzed.de>, for the Debian project (but may be used by others).  Modified by Fernando
       Perez <Fernando.Perez@berkeley.edu> for inclusion in IPython.

								   July 15, 2011							IRUNNER(1)